FOUS53 KLSX 181051 AFMLSX Area Forecast Matrices National Weather Service Saint Louis MO 551 AM CDT Mon May 18 2026 ILZ100-101-MOZ061-063-064-182100- Madison IL-Saint Clair IL-Saint Charles MO-Saint Louis MO- Saint Louis City MO- Including the cities of Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 70 85 57 69 Temp 76 79 79 79 77 73 72 71 71 79 82 80 75 69 64 59 57 62 66 68 68 Dewpt 68 69 69 69 67 66 66 66 66 68 70 70 65 63 60 55 52 51 52 52 51 RH 76 72 72 72 71 79 81 84 84 69 67 72 71 81 87 87 83 67 61 57 54 Wind dir S S SW S S S S S S SW SW W NW NW N N N N N N NE Wind spd 12 16 16 14 13 13 12 11 11 14 12 10 8 6 8 9 10 9 8 9 6 Wind gust 27 27 28 27 26 27 26 24 24 25 23 Clouds SC B2 OV B2 B2 B1 SC SC B1 B2 B2 B2 OV OV OV B2 B2 B2 B2 B2 B1 PoP 12hr 90 50 100 80 10 QPF 12hr 0.50-1.02 0.01-0.26 0.21-0.43 0.03-0.22 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D L C S S C C D D D D L L Tstms S C L L C S S S C L L C Heat index 80 81 80 80 85 83 Max heat 86 85 90 92 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 51 73 57 76 60 82 61 86 Temp 58 52 69 72 63 59 71 75 65 62 78 80 67 64 83 84 Dewpt 50 45 54 55 56 55 60 61 63 60 63 63 63 62 64 64 PWind dir NE E E E SE SW W S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 SC B1 SC SC PoP 12hr 5 5 30 50 40 20 10 10 Rain shwrs C C C C C S S Tstms C S S S $$ MOZ049-050-182100- Osage MO-Callaway MO- Including the city of Fulton 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 67 79 52 67 Temp 74 76 76 77 77 73 73 71 68 74 74 73 69 63 59 54 52 58 63 66 65 Dewpt 68 68 68 69 67 66 65 65 65 68 66 65 60 57 54 50 48 48 49 50 49 RH 82 76 76 76 71 79 76 81 90 82 76 76 73 81 83 86 86 69 60 56 56 Wind dir S S S S S S S S SW SW W NW NW N N N N NE NE NE NE Wind spd 12 13 13 14 13 13 13 11 11 11 10 9 8 5 5 6 8 9 8 8 6 Wind gust 28 29 28 29 29 31 29 26 26 25 21 20 16 17 19 20 20 17 Clouds B1 B2 B2 B2 B1 SC B1 B1 B2 B2 B2 B2 OV B2 B2 B2 B1 B1 B2 B1 B1 PoP 12hr 90 60 90 40 10 QPF 12hr 0.70-1.62 0.04-0.17 0.02-0.34 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs CD D L C S C L C D D C C C C Tstms C C L C C S C S C C C S Flood A A A A Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 49 71 55 75 56 81 58 86 Temp 55 50 67 70 61 57 70 74 62 58 77 79 64 61 82 83 Dewpt 49 46 52 55 56 55 61 61 61 58 61 62 61 60 63 64 PWind dir NE E E SE SE SW S S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 SC SC SC SC SC PoP 12hr 5 20 40 50 20 10 10 10 Rain shwrs S S C C C S S S S S Tstms S C S S S S $$ MOZ042-182100- Audrain MO- Including the city of Mexico 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 66 76 51 66 Temp 73 73 74 76 77 73 72 69 67 72 73 71 69 61 57 53 51 58 63 65 65 Dewpt 67 67 67 68 67 65 65 64 64 65 63 60 56 53 50 47 46 46 47 47 47 RH 81 81 79 76 71 76 79 84 90 79 71 68 63 75 77 80 83 64 56 52 52 Wind dir S S S S S S S SW SW SW NW NW N N N N N NE NE NE NE Wind spd 13 14 16 17 18 16 16 13 14 14 12 11 10 8 8 9 10 11 9 9 8 Wind gust 26 28 28 31 32 29 31 24 27 27 23 19 20 Clouds B1 OV B2 B2 B1 SC B1 OV B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 90 60 60 20 5 QPF 12hr 0.41-0.75 0.17-0.38 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L D D C S S C L C L L S S S S Tstms C C L C S S C S C C C Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 48 70 54 74 56 80 58 85 Temp 54 49 65 69 59 56 70 73 61 58 77 79 63 61 82 83 Dewpt 46 43 50 53 53 53 59 60 58 57 60 61 59 58 63 63 PWind dir NE E E E SE SW SW S Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B1 SC B1 B1 B2 B2 B2 B1 B1 B1 SC SC SC SC SC PoP 12hr 5 20 40 40 10 10 10 10 Rain shwrs S S C C C S Tstms C S $$ MOZ041-047-048-182100- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 67 78 52 68 Temp 74 75 76 78 78 74 73 70 69 72 72 72 69 63 59 54 52 59 64 67 67 Dewpt 68 68 68 69 68 66 65 64 65 66 64 61 57 55 52 49 47 47 48 48 48 RH82 79 76 74 71 76 76 81 87 81 76 68 66 75 78 83 83 64 56 50 50 Wind dir S S S S S S S S SW W NW NW NW N N N N NE NE NE NE Wind spd 11 12 13 14 14 13 13 10 9 10 9 9 6 5 5 6 6 8 8 6 6 Wind gust 26 27 27 31 32 29 29 23 26 25 21 19 18 16 17 19 20 20 Clouds B2 B2 B2 B2 B1 SC B1 B2 B2 B2 B2 OV OV B2 B2 B2 B1 B1 B2 B1 B1 PoP 12hr 90 50 70 30 5 QPF 12hr 0.46-1.48 0.04-0.39 0.01-0.13 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L D D L S C C C C D D C C S S Tstms C L L C S C C S C C C S Flood A A A A Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 50 72 56 77 57 83 60 87 Temp 56 51 67 70 61 58 71 75 62 59 78 80 64 62 83 84 Dewpt 48 46 52 55 55 56 61 61 60 58 61 62 60 60 63 64 PWind dir NE E E SE SE SW S S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 SC SC SC SC SC PoP 12hr 5 30 40 50 20 10 10 10 Rain shwrs C C C C C S S S Tstms C S S $$ ILZ095>097-MOZ018-019-026-027-034>036-182100- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 67 77 51 67 Temp 71 72 74 77 76 73 72 69 68 72 73 72 68 62 57 53 51 58 63 66 65 Dewpt 66 67 68 68 67 65 65 64 65 65 63 60 56 53 50 47 45 46 48 48 48 RH 84 84 82 74 74 76 79 84 90 79 71 66 65 72 77 80 80 64 58 52 54 Wind dir S S S S S S S SW SW W NW NW NW N N N N NE NE NE NE Wind spd 11 12 14 16 14 14 13 11 13 13 11 11 9 6 6 8 8 9 8 6 5 Wind gust 26 28 31 33 33 29 29 25 29 27 23 23 20 18 19 19 20 20 18 17 Clouds B2 OV OV B2 B1 SC B2 OV B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 80 50 40 10 0 QPF 12hr 0.18-0.96 0.15-0.66 0.00-0.17 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs D D L C S S C C C C C C S S Tstms C C L C S S C C S S C C Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 48 70 54 74 56 80 59 86 Temp 54 49 66 69 60 56 69 72 61 58 77 78 64 61 82 83 Dewpt 45 42 50 52 52 53 58 59 57 57 61 61 58 59 63 64 PWind dir NE E E E E SW SW S Wind char LT GN LT LT LT LT LT LT Avg clouds B1 SC SC SC B1 B2 B2 B2 B1 B1 B1 B1 SC SC SC SC PoP 12hr 520 40 40 20 10 10 10 Rain shwrs S S C C C S S S Tstms C S S $$ ILZ069-070-074-182100- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 70 85 59 70 Temp 75 79 80 79 77 73 71 71 72 79 82 81 76 71 66 62 59 63 67 69 68 Dewpt 67 70 70 70 68 66 65 66 67 69 70 70 67 66 63 59 55 54 54 54 52 RH 76 74 72 74 74 79 81 84 84 72 67 69 74 84 90 90 87 72 63 59 57 Wind dir S S S S S S S S S SW SW SW W NW NW N N N N N NE Wind spd 12 17 18 16 13 13 12 13 13 17 16 11 6 4 6 9 11 10 9 9 8 Wind gust 25 28 28 27 24 25 25 25 24 Clouds SC B2 B2 B2 B2 B1 SC SC SC B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 PoP 12hr 80 40 80 80 20 QPF 12hr 0.25-0.82 0.01-0.09 0.23-0.38 0.14-0.29 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L C S C C D D D D L L S S Tstms C L L C S S C L L C Heat index 83 80 86 85 Max heat 86 86 88 90 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 52 72 57 75 61 81 62 85 Temp 58 53 69 71 62 59 70 73 65 63 77 79 67 64 82 82 Dewpt 49 47 55 56 55 56 61 62 63 63 64 64 64 64 65 65 PWind dir NE NE E E S SW SW S Wind char LT GN LT LT LT LT LT LT Avg clouds B2 B1 B1 SC B1 B2 B2 B2 B2 B2 B2 B1 SC B1 B1 SC PoP 12hr 10 5 30 60 40 30 10 10 Rain shwrs C L C C C S C Tstms S C S S C $$ MOZ074-084-085-099-182100- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 69 85 56 70 Temp 74 76 79 80 78 75 73 72 70 79 82 81 76 69 65 60 57 62 67 69 68 Dewpt 68 69 69 69 68 67 66 65 66 68 71 73 69 67 64 60 56 55 54 54 52 RH 82 79 72 69 71 76 79 79 87 69 69 77 79 93 97100 96 78 63 59 57 Wind dir S S S S S S S S S SW SW SW W NW N N N NE NE N NE Wind spd 10 12 13 12 10 10 10 10 9 10 8 6 4 2 3 5 6 6 5 5 5 Wind gust 28 31 31 29 26 27 27 29 27 26 23 19 14 13 16 20 21 20 18 17 18 Clouds B2 B2 B2 B2 B1 SC SC SC B1 B2 B1 B1 B2 B2 OV OV B2 B2 B2 B2 B2 PoP 12hr 50 30 90 90 40 QPF 12hr 0.12-0.96 0.00-0.09 0.15-0.45 0.18-0.44 0.01-0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C CC C C C D D D D D D C C C C S Tstms S C C C S S C L L C S S S Heat index 80 82 86 86 Max heat 85 87 90 94 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 52 75 57 77 59 82 60 85 Temp 58 53 72 73 63 59 73 75 64 61 78 79 65 62 82 82 Dewpt 52 50 55 58 58 58 62 63 63 61 64 64 63 62 64 65 PWind dir NE NE E SE S SW SW S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 20 10 50 60 40 40 10 20 Rain shwrs S S C L L C C S C S S Tstms C C S S C S S $$ MOZ051-060-182100- Montgomery MO-Warren MO- 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 66 80 51 67 Temp 75 76 76 77 76 73 73 71 67 75 76 75 71 63 59 54 52 58 63 66 66 Dewpt 68 69 68 69 67 66 65 65 66 68 68 66 61 58 55 51 49 49 50 51 50 RH 79 79 76 76 74 79 76 81 97 79 76 74 71 84 87 90 89 72 62 58 56 Wind dir S SW S S S S S S SW SW W NW NW N N N N NE NE NE NE Wind spd 10 12 12 13 13 12 13 11 10 12 10 8 6 5 5 8 8 8 6 6 5 Wind gust 26 28 27 28 29 26 28 24 26 26 21 19 18 16 17 19 19 19 17 16 Clouds B1 B2 OV B2 B2 SC SC B1 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 B2 B1 B1 PoP 12hr 90 60 90 50 5 QPF 12hr 0.71-1.36 0.03-0.24 0.02-0.33 0.00-0.06 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D D L C S C C C D D C C C C Tstms C C L L C S C S C C C S Flood A A A A Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 48 71 54 75 55 81 57 86 Temp 55 49 66 70 61 56 70 73 62 59 76 79 64 61 82 84 Dewpt 48 44 53 55 55 55 60 61 61 58 62 62 61 60 64 64 PWind dir NE E E E SE W SW S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 SC SC SC SC PoP 12hr 5 20 40 50 20 10 10 10 Rain shwrs S S C C C S S S Tstms S C S S $$ MOZ052-182100- Lincoln MO- 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 68 81 53 67 Temp 75 77 76 77 76 73 72 71 69 77 78 76 72 65 61 55 53 59 64 66 67 Dewpt 68 69 68 69 67 66 66 65 66 69 69 66 62 59 55 51 49 49 51 51 51 RH 79 76 76 76 74 79 81 81 90 76 74 71 71 81 81 86 86 69 63 58 56 Wind dir S SW S S S S S S S SW W NW NW N N N N N NE NE NE Wind spd 9 12 11 12 12 11 12 10 9 11 10 8 6 5 5 6 8 8 6 5 4 Wind gust 24 26 26 27 27 24 28 23 26 26 21 19 17 16 17 19 20 19 Clouds SC B2 OV B2 B2 SC SC B1 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 B2 B1 B1 PoP 12hr 90 50 90 40 5 QPF 12hr 0.74-0.97 0.11-0.22 0.07-0.25 0.01-0.06 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D D L C C C C D D C C S S Tstms S C L L C C S C L C S Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 49 72 55 75 57 81 59 86 Temp 56 50 67 71 61 57 70 74 63 60 77 79 65 62 83 84 Dewpt 48 44 53 56 55 55 60 62 61 59 63 63 62 60 65 65 PWind dir NE E E E SE W W SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC B1 B2 B2 B2 B2 B1 B1 B1 SC SC SC SC PoP 12hr 5 5 30 50 30 10 10 10 Rain shwrs C C C S C Tstms C S $$ ILZ058-059-098-099-182100- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 66 82 52 67 Temp 74 77 76 76 75 72 71 70 69 77 79 77 72 65 61 56 53 60 64 67 66 Dewpt 67 68 67 67 66 65 65 64 65 68 67 65 61 59 55 50 48 48 48 48 48 RH 79 74 74 74 74 79 81 81 87 74 67 67 68 81 81 80 83 64 56 50 52 Wind dir S S SW S S S S S S SW SW NW NW NW N N N N N N NE Wind spd 13 16 14 14 14 14 14 12 12 14 13 10 9 8 8 10 10 10 8 8 6 Wind gust 28 28 27 27 27 26 27 26 25 27 25 Clouds SC B2 OV B2 B2 SC SC B1 B2 B2 B2 B2 OV OV B2 B2 B2 B1 B1 B1 B1 PoP 12hr 90 40 90 50 5 QPF 12hr 0.75-0.90 0.11-0.29 0.09-0.34 0.01-0.09 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D D L C S C C L D D L L S S Tstms S C L L C S C S C L L C Heat index 81 Max heat 83 86 87 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 47 71 53 74 56 80 58 85 Temp 55 48 68 70 61 57 70 73 63 60 77 78 65 62 82 83 Dewpt 45 41 50 52 53 52 57 59 60 58 60 61 60 59 62 63 PWind dir NE E E E SE SW W S Wind char LT GN LT LT LT LT LT LT Avg clouds B1 SC SC B1 B1 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC PoP 12hr 5 5 20 4030 30 10 10 Rain shwrs S C C C C C S Tstms S S S S $$ ILZ060-064-065-182100- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 68 83 56 68 Temp 74 77 77 76 75 71 70 70 70 78 81 79 74 68 64 59 56 61 65 68 66 Dewpt 65 69 69 68 67 65 65 65 65 68 69 68 65 62 59 55 51 51 52 51 50 RH 74 76 76 76 76 81 84 84 84 71 67 69 74 81 84 87 83 70 63 54 56 Wind dir S S S S S S S S S SW SW SW NW NW N N N N N N NE Wind spd 13 17 16 14 14 14 13 13 13 18 16 11 8 5 8 10 11 10 9 9 6 Wind gust 28 28 27 27 27 26 27 27 25 Clouds SC B2 OV OV B2 B1 SC SC B1 B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 B1 PoP 12hr 90 40 90 80 10 QPF 12hr 0.65-0.96 0.04-0.28 0.18-0.39 0.03-0.23 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C D L C S S C C D D D D C C Tstms S C D L C S S S C L L C Heat index 83 80 Max heat 83 87 88 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 48 71 54 73 58 79 60 83 Temp 55 49 68 69 60 57 69 72 64 61 76 77 65 63 81 81 Dewpt 45 43 53 53 53 53 59 60 61 60 62 62 62 61 63 64 PWind dir NE E E E SE SW SW S Wind char GN GN LT LT LT LT LT LT Avg clouds B2 B1 SC SC B1 B2 B2 B2 B2 B2 B1 B1 SC B1 SC SC PoP 12hr 5 5 20 50 40 30 10 10 Rain shwrs S C C C C C S Tstms S S S S $$ ILZ079-MOZ075-182100- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 69 86 57 70 Temp 76 79 81 81 78 74 73 72 71 79 83 82 77 71 66 61 58 62 66 69 69 Dewpt 68 70 70 70 68 67 66 66 66 69 71 72 69 67 64 60 56 54 55 55 53 RH 76 74 69 69 71 79 79 81 84 72 67 72 76 87 93 97 93 75 68 61 57 Wind dir S S S S S SE S S S SW SW SW W NW NW N N N N N NE Wind spd 11 16 17 16 12 13 12 12 12 13 12 10 6 4 6 9 9 9 8 8 8 Wind gust 28 31 31 31 26 27 26 28 26 26 23 19 18 Clouds B1 B1 B2 B2 B2 SC SC SC SC B2 B1 B2 B2 B2 OV OV B2 B2 B2 B2 B2 PoP 12hr 60 30 90 90 40 QPF 12hr 0.13-0.76 0.00-0.09 0.20-0.43 0.16-0.32 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L L C C C D DD D D D C C S S S Tstms S C L C S S C L L C S S S Heat index 84 85 80 88 87 Max heat 86 86 91 93 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 52 74 57 76 59 82 60 85 Temp 59 53 70 72 63 60 72 75 65 62 78 79 66 63 83 83 Dewpt 52 48 56 57 58 58 62 63 63 62 64 64 64 63 65 65 PWind dir NE NE E SE S SW SW S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 SC SC B1 SC PoP 12hr 20 10 40 60 40 30 10 10 Rain shwrs S C L L S C C S Tstms C S C S $$ MOZ059-062-072-073-182100- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 69 84 54 68 Temp 76 78 79 79 77 74 74 73 70 78 80 78 73 66 62 57 54 60 64 67 67 Dewpt 68 69 69 69 67 67 65 65 65 68 70 71 65 63 60 55 52 51 52 52 51 RH 76 74 72 72 71 79 74 76 84 71 72 79 76 90 93 93 93 72 65 59 56 Wind dir S S S S S S S S SW SW SW W NW N N N N NE NE NE NE Wind spd 10 13 13 13 11 11 12 11 9 11 9 6 4 3 3 4 5 6 5 5 5 Wind gust 28 31 31 29 27 31 28 27 26 25 21 19 14 13 14 18 19 18 16 16 16 Clouds B1 B1 B2 B2 B1 SC SC B1 B1 B2 B2 B2 OV OV OV OV B2 B2 B2 B2 B2 PoP 12hr 90 40 100 80 20 QPF 12hr 0.58-1.44 0.02-0.19 0.12-0.57 0.02-0.29 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D L C S C C D D D D L L C C S S Tstms S C L C C S S C L C C Heat index 80 80 82 Max heat 85 85 88 91 Flood A A A A Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 50 73 56 77 58 82 59 86 Temp 57 51 69 71 62 58 72 75 64 60 78 79 65 62 83 83 Dewpt 50 47 54 56 57 56 61 62 62 60 62 63 62 61 63 64 PWind dir NE E E E S W S S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC PoP 12hr 10 10 40 50 40 20 10 20 Rain shwrs S S C C C C C S S Tstms C S S S S $$ ILZ102-MOZ065-182100- Monroe IL-Jefferson MO- 551 AM CDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 69 86 56 69 Temp 77 79 80 81 78 74 73 73 70 80 82 81 75 69 64 59 56 61 65 68 68 Dewpt 68 70 70 70 68 67 67 66 66 70 72 73 68 66 62 58 53 53 54 55 53 RH 74 74 72 69 71 79 81 79 87 72 72 77 79 90 93 96 90 75 68 63 59 Wind dir S S S S S SE S S S SW SW SW NW NW N N N N N N NE Wind spd 9 12 13 13 11 11 10 10 9 10 9 6 5 4 5 6 6 6 6 5 5 Wind gust 25 26 27 28 25 27 25 25 23 23 21 18 17 18 17 16 Clouds B1 B1 B2 B2 B2 SC SC SC B1 B2 B2 B1 OV B2 OV OV B2 B2 B2 B2 B2 PoP 12hr 90 30 100 90 20 QPF 12hr 0.65-1.00 0.01-0.06 0.30-0.42 0.10-0.20 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C D L C C C D D D D L L S S S S Tstms S C L C C S C L C C Heat index 80 84 84 81 87 86 Max heat 86 87 92 94 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 51 73 56 76 59 82 60 86 Temp 58 52 69 72 63 59 72 75 65 61 79 80 66 63 83 84 Dewpt 52 46 56 58 58 56 62 63 63 61 64 64 64 62 65 65 PWind dir NE E E E S SW SW S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC PoP 12hr 10 10 40 60 40 20 10 10 Rain shwrs C L L S C S S S Tstms C S S S S $$