FOUS55 KTFX 192135 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 335 PM MDT Tue May 19 2026 MTZ312-201000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 39 57 38 61 38 Temp 60 52 47 43 40 50 54 55 51 46 44 41 39 46 53 58 59 52 46 41 39 Dewpt 36 37 37 34 31 35 38 43 41 40 40 38 36 36 34 35 33 35 35 31 30 RH 41 56 68 70 70 56 54 64 68 79 86 89 89 68 48 42 37 52 65 67 70 Wind dir SW W SW SW SW W NW N NW W W NW W NW NW NW NW S S S SW Wind spd 11 6 10 10 9 9 8 10 6 5 6 6 6 8 8 6 5 5 8 8 8 Clouds B1 SC FW SC B1 OV OV OV OV B2 B2 B2 SC SC SC SC SC SC SC FW SC PoP 12hr 20 90 60 20 0 QPF 12hr 0.03 0.11 0.05 0 0 Snow 12hr 00-00 00-00 00-00 Rain C S C C S S Rain shwrs S L L Tstms C C Date 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 70 43 77 49 80 52 80 49 72 Temp 64 69 52 45 70 75 57 50 74 78 59 54 75 75 57 50 65 68 Dewpt 33 33 37 35 36 36 38 36 36 36 37 35 36 38 38 36 34 35 PWind dir SW SW SW SW SW SW SW NW W Wind char LT LT GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC FW SC SC SC FW SC SC SC SC B1 SC SC SC PoP 12hr 0 0 0 5 0 0 10 20 30 Rain S C Rain shwrs S Tstms S $$ MTZ303-201000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 38 54 34 62 37 Temp 60 52 45 41 39 44 48 52 51 45 40 36 35 46 54 60 61 53 44 39 37 Dewpt 34 34 34 32 33 36 36 37 35 35 34 32 31 31 31 32 30 32 31 30 29 RH 37 50 65 70 79 73 63 56 54 68 79 85 85 55 41 35 31 44 60 70 72 Wind dir W W W W NW NW N NW N N NW NW NW NW NW NW NW N S SW W Wind spd 17 12 11 11 10 13 11 10 10 9 11 11 11 13 12 10 6 5 6 4 4 Clouds B1 B2 B1 B1 B2 OV B2 OV B1 B2 B1 SC B1 SC SC SC SC SC SC SC SC PoP 12hr 10 80 50 5 0 QPF 12hr 0 0.09 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain S L C S Rain shwrs D Tstms SDate 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 69 41 74 46 76 48 74 44 67 Temp 64 66 49 43 69 73 53 48 71 73 55 49 69 70 52 44 61 64 Dewpt 30 33 35 33 33 33 35 33 32 32 32 31 32 33 35 32 31 32 PWind dir W W W SW SW SW SW NW NW Wind char LT LT GN GN BZ BZ BZ BZ BZ Avg clouds SC SC B1 SC SC SC SC SC SC FW SC SC SC SC B1 SC SC SC PoP 12hr 5 5 5 0 0 5 5 30 20 Rain S C S S $$ MTZ319-201000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 38 64 38 61 37 Temp 61 53 46 41 38 47 58 62 55 48 44 42 40 43 52 58 60 53 45 40 37 Dewpt 30 33 33 32 32 33 34 37 40 39 39 38 39 37 35 33 29 32 32 30 30 RH 31 46 60 70 79 58 40 39 57 71 82 86 96 79 52 39 31 44 60 67 75 Wind dir W W SW SW SW W W NW NW NW NW NW NW N N N N N SW SW SW Wind spd 10 5 5 4 4 2 3 10 11 10 10 9 9 8 6 8 9 0 4 4 2 Clouds B1 B1 B1 B1 B1 B1 B1 B2 OV OV B2 B2 B1 B1 SC SC SC SC SC SC SC PoP 12hr 20 60 90 30 0 QPF 12hr 0.01 0.03 0.14 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain D L L C C Rain shwrs S S S L L Tstms S C S Date 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 70 40 76 44 79 46 80 44 71 Temp 61 69 51 41 67 75 55 46 72 77 57 48 73 77 56 46 63 68 Dewpt 33 31 34 34 35 32 35 35 36 32 35 35 35 33 36 35 33 31 PWind dir NW SW SW SW SW W SW W NW Wind char LT LT LT LT LT LT GN GN GN Avg clouds SC SC SC SC FW SC SC SC SC SC SC SC SC SC SC SC SC B1 PoP 12hr 0 0 5 5 5 5 20 20 30 Rain S C Rain shwrs S Tstms S $$ MTZ326-201000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 33 62 35 55 31 Temp 61 50 44 38 34 46 57 61 58 48 44 42 38 41 47 52 54 47 41 36 32 Dewpt 27 32 33 30 28 31 33 33 34 42 40 40 37 37 37 36 33 35 33 30 27 RH 27 50 65 73 78 55 40 35 40 80 86 93 96 8568 54 45 63 73 79 81 Wind dir NW W SE S SE N W NW N NW W NW NW N N NW N SE SE SE SE Wind spd 8 2 3 3 3 0 5 6 9 4 3 5 6 8 4 4 5 2 5 4 3 Clouds B1 B1 SC B1 SC SC SC B2 OV OV OV OV OV OV B1 B1 SC SC FW SC SC PoP 12hr 20 20 100 70 0 QPF 12hr 0.01 0 0.14 0.03 0 Snow 12hr 00-00 00-00 00-00 Rain D D D L L C Rain shwrs S S L C Tstms S S Date 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 67 38 75 42 80 45 81 44 73 Temp 58 67 47 40 67 73 53 44 73 77 56 47 76 78 56 46 67 70 Dewpt 32 30 32 31 35 34 36 34 36 35 35 34 34 34 34 34 34 34 PWind dir SW E SW S SW S SW SW W Wind char LT LT LT LT LT LT GN GN LT Avg clouds SC SC SC SC FW FW SC SC FW FW B1 SC FW SC SC SC SC B1 PoP 12hr 0 0 0 5 5 5 20 20 30 Rain S C Rain shwrs S Tstms S $$ MTZ330-201000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 26 57 30 51 24 Temp 52 43 35 29 26 39 54 56 54 44 37 35 33 36 45 50 50 41 32 27 25 Dewpt 13 21 23 21 21 23 24 26 29 34 35 35 33 33 30 29 27 29 28 26 25 RH 21 41 61 72 81 52 31 31 38 68 92100100 89 55 44 41 62 85 96100 Wind dir SW W SE SE N SW SW SW W N N N N N N N N N NE N N Wind spd 8 2 1 1 0 2 8 8 4 0 0 0 1 5 10 10 9 3 1 0 0 Wind gust 19 19 18 24 23 23 Clouds B1 B2 B2 SC B1 B1 SC B2 OV OV OV OV OV B2 B2 B1 SC SC SC SC SC PoP 12hr 10 30 90 60 0 QPF 12hr 0 0 0.11 0.05 0 Snow 12hr 00-00 00-00 00-00 Rain C D D S L Rain shwrs C L C C Snow S D L L Snowshwrs C Tstms S S S S Date 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 62 30 68 34 74 37 76 38 67 Temp 55 61 39 31 63 67 44 36 69 72 48 38 72 74 49 38 64 65 Dewpt 23 26 30 28 28 33 33 31 31 34 33 31 29 32 32 31 27 31 PWind dir W SW SW S SWS SW S SW Wind char LT LT LT LT LT LT GN GN LT Avg clouds SC SC B1 SC FW SC SC SC FW FW SC FW FW SC SC SC SC SC PoP 12hr 10 0 5 10 5 5 5 10 20 Rain shwrs S Tstms S $$ MTZ328-201000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 34 62 35 57 32 Temp 59 49 42 37 35 45 57 61 60 48 43 39 37 41 49 55 56 48 40 36 33 Dewpt 21 26 29 28 28 30 32 30 31 35 37 37 35 35 33 32 29 30 29 27 25 RH 23 40 60 70 75 55 38 31 33 60 79 92 92 79 54 41 35 49 64 69 72 Wind dir NW E SE SW S SW W NW N N N N N N N N N NE S S S Wind spd 8 5 4 5 4 3 6 8 10 6 6 9 16 21 19 13 11 4 4 3 3 Wind gust 26 33 29 24 Clouds B1 B1 B1 B1 SC SC B2 B2 B2 OV OV OV OV B1 B1 SC FW SC SC SC SC PoP 12hr 20 5 90 40 0 QPF 12hr 0.01 0 0.05 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain C D D C C Rain shwrs S S C Snow D S Tstms S Date 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 67 38 75 42 79 44 80 43 71 Temp 59 66 47 40 67 73 52 44 73 77 55 46 75 78 54 44 65 68 Dewpt 31 28 31 29 32 31 33 30 33 32 31 30 32 30 31 30 31 29 PWind dir W SE SW S SW SW SW S NW Wind char LT LT LT LT GN GN BZ BZ GN Avg clouds SC SC SC SC FW FW SC SC FW SC SC SC SC SC SC SC SC SC PoP 12hr 0 0 0 5 5 0 10 10 20 Rain S $$ MTZ305-201000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 39 62 35 65 36 Temp 62 54 48 44 40 48 57 60 59 52 45 40 36 46 57 63 63 55 46 41 37 Dewpt 36 38 39 37 34 38 40 39 37 38 38 36 34 36 36 35 35 37 36 33 31 RH 38 54 71 76 79 68 53 46 44 59 76 85 92 68 45 35 35 51 68 73 79 Wind dir SW SW SW SW SW W NW NW NW NW W W W W NW NW NW N SE S SW Wind spd 11 8 10 10 10 10 12 12 10 5 5 5 6 8 11 10 9 2 4 3 3 Clouds B1 B1 SC B1 B2 OV B2 B2 B2 B1 SC SC B2 B1 B1 B1 SC SC FW FW SC PoP 12hr 30 60 20 10 0 QPF 12hr 0.01 0.04 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain S S S Rain shwrs C C L Tstms S Date 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 73 43 79 48 82 51 83 49 77 Temp 67 70 52 45 73 77 58 49 77 80 61 52 79 79 60 50 72 74 Dewpt 35 32 36 36 38 36 39 38 37 34 37 36 37 37 40 37 37 35 PWind dir W S SW S SW SW W W NW Wind char LT LT LT LT GN GN GN GN GN Avg clouds SC SC SC SC SC FW SC SC SC FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 5 5 0 0 5 20 5 Rain S $$ MTZ314-201000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 335 PM MDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 35 58 35 55 34 Temp 55 47 43 40 37 50 55 56 51 45 41 40 38 41 49 53 54 47 40 38 35 Dewpt 36 37 34 31 29 33 36 40 40 39 37 37 36 35 35 34 34 35 32 31 28 RH 49 68 70 70 72 52 49 55 66 79 85 89 92 79 58 48 46 63 73 76 75 Wind dir SW SW SW SW SW W W NW NW W W W NW NW NW NW NW W SW S SW Wind spd 5 4 6 6 6 9 9 9 5 3 3 4 6 9 9 10 8 2 4 5 5 Clouds B1 B2 B1 SC B1 B2 B1 OV OV OV OV OV OV B2 B1 B2 SC SC FW FW SC PoP 12hr 20 80 70 40 0 QPF 12hr 0.01 0.03 0.07 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain C S C C C C C Rain shwrs S C L C Tstms C C S Date 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 67 39 72 44 76 47 79 46 72 Temp 60 65 46 44 67 71 52 48 72 74 55 51 74 75 55 49 67 68 Dewpt 32 33 33 33 34 36 35 34 35 37 35 35 36 39 36 34 35 36 PWind dir W S SW S SW SW SW W W Wind char LT LT LT LT GN LT GN GN GN Avg clouds SC SC SC SC FW FW SC SC SC FW SC SC SC SC SC SC SC SC PoP 12hr 5 0 5 5 5 5 10 20 20 Rain S S S Rain shwrs S Tstms S $$ http://www.weather.gov/greatfalls