FOUS51 KLWX 200002 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 802 PM EDT Tue May 19 2026 VAZ054-200800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 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 73 94 59 67 55 Temp 82 78 75 77 88 93 89 78 74 70 66 62 62 65 64 62 60 57 56 57 Dewpt 63 62 61 63 64 63 67 70 69 65 59 56 51 52 53 53 54 54 53 53 RH 53 58 62 62 45 37 48 76 84 84 78 81 67 63 67 72 81 90 90 86 Wind dir S SW SW SW W W NW N NW N N N NE NE NE NE NE NE E E Wind spd 9 9 8 8 9 10 12 9 8 6 11 12 12 11 9 9 6 8 8 11 Clouds SC SC FW FW FW SC B2 B2 B2 B2 OV OV OV OV OV OV OV OV OV OV PoP 12hr 10 70 60 80 60 QPF 12hr 0 0.16 0.13 0.03 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L L C C D D C C C C L L L Tstms S C C S S S S S Heat index 83 89 94 92 Max heat 86 87 94 95 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 64 54 67 59 75 62 78 63 79 Temp 61 56 54 57 62 65 61 61 72 72 65 64 74 74 67 65 75 75 Dewpt 52 51 54 56 60 61 60 61 64 65 63 63 64 66 64 63 64 65 PWind dir E E E NE E E SW E E Wind char GN GN GN GN GN LT LT LT LT Avg clouds OV B2 OV B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 80 80 70 60 60 50 50 50 40 Rain shwrs L D L D L L L C C L C C C C C C C C Tstms S S S S S C S C $$ MDZ013-200800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 94 57 67 52 Temp 79 77 74 76 89 94 86 77 72 68 64 60 62 65 65 62 59 56 53 56 Dewpt 65 63 61 64 66 65 70 72 69 63 56 52 52 53 54 55 55 54 52 53 RH 62 62 64 66 47 39 59 85 90 84 75 75 70 65 68 78 87 93 96 90 Wind dir S SW SW W W W NW NW N N N NE NE NE NE NE E E E E Wind spd 4 4 4 5 9 11 11 6 5 6 9 11 12 11 9 8 5 5 6 8 Clouds SC SC FW FW FW B1 B2 B2 B2 B2 OV OV OV OV OV B2 B2 OV B2 OV PoP 12hr 10 70 50 70 50 QPF 12hr 0 0.21 0.11 0.07 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C C C L L C C S S C C L Tstms C C C S S S Heat index92 97 91 Max heat 88 86 97 95 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 64 51 67 56 74 59 78 61 79 Temp 62 57 54 56 63 64 60 60 72 70 64 63 76 73 66 65 77 74 Dewpt 52 52 53 55 59 61 59 60 63 65 61 62 63 66 63 63 63 66 PWind dir E E E NE E E E NE E Wind char GN LT GN LT LT LT LT LT LT Avg clouds B2 B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 80 80 80 60 50 50 40 50 40 Rain shwrs L D L D D L L C C C C C C C C C C C Tstms S S S S S S S $$ MDZ011-200800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 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 73 94 59 67 55 Temp 79 77 73 76 90 93 86 78 72 68 62 61 63 65 65 63 59 57 56 57 Dewpt 65 62 61 63 64 62 67 71 69 61 55 49 48 49 50 52 52 52 51 50 RH 62 60 66 64 42 36 53 79 90 78 78 65 58 56 58 67 78 83 83 77 Wind dir S SW SW W W W NW NW N N N N NE NE NE NE E E E E Wind spd 4 4 3 5 10 11 12 6 5 6 9 10 11 10 8 6 4 4 5 6 Clouds SC SC FW FW FW B1 OV B2 B2 B2 OV OV OV OV OV B2 B2 B2 B2 OV PoP 12hr 10 80 50 70 40 QPF 12hr 0 0.30 0.18 0.08 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D C C C C L L C C S S C C L Tstms C C S S S Heat index 91 94 89 Max heat 88 86 95 94 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 64 54 67 58 74 61 78 63 79 Temp 62 58 55 56 63 64 61 61 72 70 65 63 76 74 66 65 77 75 Dewpt 48 48 51 52 55 58 58 58 60 63 61 60 60 65 62 61 60 64 PWind dir E E E NE E E E NE E Wind char GN LT LT LT LT LT LT LT LT Avg clouds B2 B2 OV OV OV B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 80 80 80 70 50 50 40 50 40 Rain shwrs L D D D D L L C C C C C C C C C C C Tstms S S S S S S $$ WVZ052-200800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 90 54 6450 Temp 77 74 70 75 87 89 82 76 69 65 59 57 60 62 62 61 57 55 52 54 Dewpt 61 60 60 63 62 62 65 65 62 56 51 49 48 48 48 49 50 50 49 49 RH 58 62 71 66 43 41 56 69 78 73 75 75 64 60 60 65 77 83 89 83 Wind dir SW SW SW W W W N N N N N N NE NE NE NE NE NE E E Wind spd 3 3 2 3 8 8 9 5 5 6 8 8 10 9 6 6 2 3 4 4 Clouds SC FW FW FW SC B1 OV B1 B1 OV OV OV OV OV OV B2 OV OV B2 OV PoP 12hr 10 70 80 70 50 QPF 12hr 0 0.11 0.08 0.15 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C D D L L C C S S C C D Tstms C C S S Heat index 87 89 84 Max heat 84 82 90 89 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 61 49 66 55 75 58 78 60 80 Temp 59 57 54 53 63 63 59 59 72 71 64 62 75 74 65 63 77 75 Dewpt 51 50 50 51 56 58 56 56 60 62 60 58 61 64 61 60 61 63 PWind dir E E E E E SE NW NE E Wind char GN LT LT LT LT LT LT LT LT Avg clouds B2 OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 90 90 90 60 50 40 50 50 50 Rain shwrs D D D D D L L C C C C C C C C C C C Tstms S S S C C $$ VAZ506-200800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 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 72 94 57 66 52 Temp 81 76 72 75 89 93 86 76 73 68 63 58 61 64 63 62 59 56 53 56 Dewpt 63 62 61 63 65 64 69 69 67 63 58 54 53 54 54 54 55 54 53 54 RH 54 62 68 66 45 38 57 79 81 84 84 86 75 70 72 75 87 93100 93 Wind dir S SW SW W W W NW N N N N N NE NE NE NE NE NE E E Wind spd 4 4 3 3 8 9 11 5 5 5 9 10 12 10 8 8 3 4 5 6 Clouds SC SC FW FW FW B1 B2 B2 B2 OV OV OV OV OV OV B2 OV OV OV OV PoP 12hr 20 80 70 80 70 QPF 12hr 0 0.27 0.17 0.07 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D L L L L D D C C C C L L D Tstms C C C S S S S Heat index 82 91 95 90 Max heat 85 86 95 94 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 63 51 68 57 76 60 78 62 80 Temp 61 57 55 55 64 65 60 60 74 72 65 63 76 75 67 64 77 76 Dewpt 55 54 54 55 61 62 60 60 65 66 63 63 65 67 64 63 65 66 PWind dir E E E NE E SE SW NE E Wind char GN LT LT LT LT LT LT LT LT Avg clouds OV B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 80 80 80 50 50 40 50 50 40 Rain shwrs D D L D D L C C C C C C C C C C C C Tstms S S S S C S C $$ VAZ037-200800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 95 60 68 52 Temp 78 74 70 75 89 94 91 80 73 70 67 64 64 66 64 62 59 57 54 54 Dewpt 59 59 57 62 61 59 58 65 68 68 63 60 55 53 51 51 53 54 53 54 RH 52 59 63 64 39 31 33 60 84 93 87 87 73 63 63 67 80 90 96100 Wind dir SW SW SW SW SW SW W N NE N NE NE NE NE NE NE NE NE NE NE Wind spd 3 4 3 3 5 8 9 3 2 3 4 9 11 11 10 9 4 4 4 5 Clouds SC SC FW FW CL SC B1 B2 B2 B2 B2 OV OV OV OV OV OV OV OV OV PoP 12hr 5 50 70 60 90 QPF 12hr 0 0.12 0.14 0.02 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L L C C L L L L L L D D D Tstms S C C S S S S S Heat index 89 82 Max heat 87 85 93 93 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 62 52 70 58 77 60 80 62 81 Temp 60 61 57 55 66 68 63 62 75 73 66 64 77 75 68 65 78 76 Dewpt 54 54 55 55 60 62 62 61 64 66 65 63 65 68 66 64 65 67 PWind dir NE NE NE NE E E SW N E Wind char LT LT LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 80 70 60 50 50 50 50 50 50 Rain shwrs D L L L C L C C S C C C C C C C C C Tstms S C C S C S C $$ MDZ003-200800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 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 69 89 53 65 50 Temp 77 73 69 74 86 87 81 75 69 64 58 57 59 63 63 61 57 54 51 54 Dewpt 63 62 61 64 66 67 69 66 61 56 51 49 49 50 49 50 51 50 48 49 RH 62 68 76 71 51 52 67 74 76 75 77 75 69 62 60 67 80 86 89 83 Wind dir S S S SW W W NW N N N N NE NE NE NE E NE NE E E Wind spd 3 3 3 4 8 10 10 9 8 6 10 11 10 9 6 6 2 3 4 5 Clouds SC SC SC FW SC B1 B2 B1 B1 OV B2 OV OV OV OV B2 B1 B2 B2 OV PoP 12hr 5 70 70 70 40 QPF 12hr0 0.08 0.03 0.12 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L C C L L L L C C C C L Tstms C C S Heat index 88 90 84 Max heat 84 82 92 91 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 62 49 64 55 74 58 77 60 79 Temp 59 57 53 53 60 63 58 59 71 70 63 62 74 73 65 63 76 74 Dewpt 52 52 51 52 57 58 57 57 62 63 61 59 63 64 62 60 63 64 PWind dir E E E E E SE W NE E Wind char GN LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 80 90 90 60 50 50 50 50 40 Rain shwrs L D D D D L L C C C C C C C C C C C Tstms S S S S C $$ MDZ017-200800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 97 64 74 56 Temp 83 81 77 80 90 95 92 80 75 73 68 69 71 72 70 66 62 60 57 61 Dewpt 63 64 63 64 63 64 64 65 67 68 65 60 55 54 54 54 54 54 54 54 RH 51 56 62 58 41 36 40 60 76 84 90 73 57 53 57 65 75 81 90 78 Wind dir S SW SW SW SW S S N N N N NE NE NE NE NE NE NE NE E Wind spd 8 10 10 9 8 9 11 6 6 4 5 11 14 13 12 12 10 11 11 12 Clouds FW FW FW FW CL CL B1 B2 B2 B2 B2 OV OV OV OV OV OV OV OV OV PoP 12hr 5 40 60 40 70 QPF 12hr 0 0.09 0.17 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L C C C C C C C C L L L Tstms S C S S Heat index 84 83 82 91 97 94 82 Max heat 86 86 82 97 96 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 68 56 71 62 76 63 81 64 82 Temp 66 60 59 63 70 68 66 67 75 72 69 69 79 75 70 70 80 76 Dewpt 53 54 57 60 63 63 64 64 65 65 65 64 65 65 65 64 65 64 PWind dir E E E NE NE SE S E E Wind char GN GN GN LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 70 60 70 60 50 50 50 50 Rain shwrs L L L L L L L C C L C C C C C C C C Tstms S C S S S S S $$ WVZ502-200800- Petersburg WV 38.99N 79.15W Elev. 963 ft 802 PM EDT Tue May 19 2026 Date05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 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 67 90 55 67 49 Temp 76 71 68 74 84 88 85 78 70 66 61 58 62 65 64 62 58 55 51 53 Dewpt 60 59 58 61 61 62 63 63 63 59 56 54 54 54 53 51 51 51 50 51 RH 58 66 70 64 46 42 48 60 78 78 84 86 75 68 67 67 77 86 96 93 Wind dir SW S S SW W W NW N N N N NE NE NE NE E E E E E Wind spd 2 2 2 2 6 8 6 4 3 3 3 4 5 6 5 4 2 2 2 2 Clouds SC FW SC FW FW B1 B1 B2 OV B2 OV OV OV OV OV OV B2 OV OV OV PoP 12hr 5 50 80 80 70 QPF 12hr 0 0.02 0.13 0.20 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C D D D D L L C C L L D Tstms C C S S S S Heat index 84 88 86 Max heat 84 83 88 88 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 65 51 74 58 81 60 82 62 83 Temp 62 61 56 56 69 71 63 62 77 76 65 64 78 77 67 65 80 79 Dewpt 55 54 54 55 61 60 58 59 64 63 60 60 65 65 62 61 64 64 PWind dir E SE SE SE SE S SW S SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 90 80 70 40 70 40 70 50 70 Rain shwrs D D D L L L C C C L C S L L C C L L Tstms S S S C C C $$ MDZ014-200800- Annapolis MD 38.99N 76.49W Elev. 7 ft 802 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 91 59 67 55 Temp 77 77 75 77 89 91 85 76 72 69 64 62 66 66 65 63 60 58 56 59 Dewpt 66 64 63 65 66 67 71 72 70 66 59 54 51 52 52 54 55 54 53 52 RH 69 64 66 67 47 45 63 87 93 90 84 75 58 61 63 72 84 86 90 78 Wind dir S SW SW SW SW S W N NW N N NE NE NE NE NE E E E E Wind spd 5 6 4 5 8 10 10 6 4 6 9 13 13 11 10 10 8 9 10 10 Clouds SC SC FW FW FW SC B2 B2 B2 B2 OV OV OV OV OV OV OV OV B2 OV PoP 12hr 10 70 50 80 60 QPF 12hr 0 0.24 0.20 0.04 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L C C C C D D C C C C L L L Tstms S C C S S S S Heat index 92 94 90 Max heat 83 83 94 94 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 64 54 68 59 74 62 79 63 80 Temp 64 58 57 58 66 64 62 63 72 69 65 66 77 74 68 67 78 74 Dewpt 50 51 54 56 58 60 61 61 61 63 62 62 61 64 63 62 61 63 PWind dir E E E NE E E E E E Wind char GN LT GN LT LT LT LT LT LT Avg clouds B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 80 80 80 70 60 50 50 50 40 Rain shwrs L D L D D L L C C L C C C C C C C C Tstms S S S S S S S $$