FOUS51 KLWX 120632 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 232 AM EDT Wed Aug 12 2026 VAZ054-122000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 89 72 90 74 86 Temp 73 74 81 86 88 83 77 75 73 75 83 88 88 83 78 76 75 74 79 83 85 81 Dewpt 69 69 68 69 68 69 70 70 70 72 72 71 71 70 71 71 71 71 71 71 69 68 RH 87 84 65 57 52 63 79 84 90 90 70 57 57 65 79 85 87 90 77 67 59 65 Wind dir W NW N N NW NW W W W W W W W W W NW NW NE N N N N Wind spd 6 6 6 4 5 6 5 5 6 5 9 9 9 6 6 5 8 6 8 6 8 8 Clouds B2 B2 SC B1 B1 SC SC SC FW FW SC B1 B1 B2 B2 B1 B1 B2 B2 B1 B1 B1 PoP 12hr 5 20 30 60 60 QPF 12hr 0 0 0.06 0.06 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L S S L L C C Tstms S S S S S C C C Heat index 84 90 92 87 88 94 94 87 88 89 84 Max heat 90 92 83 94 95 83 88 90 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 86 70 87 75 89 71 86 Temp 74 72 84 78 70 71 85 82 77 77 87 83 74 72 83 80 Dewpt 66 63 63 63 64 67 70 69 71 72 72 68 67 66 65 63 PWind dir N NE SE S SW NW NW NW Wind char GN GN GN GN GN GN GN GN Avg clouds SC FW FW SC SC SC SC B1 B1 B1 SC B1 SC FW FW FW PoP 12hr 10 5 20 40 40 30 20 10 Rain shwrs S S C C S C S Tstms S S S $$ MDZ013-122000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 71 89 71 85 Temp 72 73 80 85 85 79 75 73 72 73 83 87 87 81 76 73 71 73 78 82 84 79 Dewpt 69 70 69 68 68 70 71 70 70 72 73 72 72 71 72 72 70 71 72 72 71 71 RH 90 90 69 57 57 74 87 90 93 97 72 61 61 72 87 97 97 93 82 72 65 77 Wind dir W NW N NW NW W SW W W W W W W SW SW W N NE NE NE N NE Wind spd 4 5 5 3 4 3 2 2 3 3 5 6 6 2 2 2 3 3 4 4 4 3 Clouds B2 B2 SC B1 SC SC SC SC FW SC SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 SC PoP 12hr 10 20 20 40 60 QPF 12hr 0 0 0.01 0.07 0.24 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C L L C C Tstms S S S S S S C C C Heat index 83 88 88 89 94 94 85 87 89 Max heat 88 91 94 94 87 89 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 84 67 86 72 88 69 86 Temp 71 70 82 76 69 70 83 79 75 74 86 81 73 70 83 79 Dewpt 66 64 65 65 66 69 72 72 72 73 74 71 68 68 68 67 PWind dir N NE S S SW NW NW N Wind char LT LT LT GN LT GN LT LT Avg clouds SC FW FW SC SC SC SC B1 B1 B1 SC B1 SC FW FW FW PoP 12hr 10 5 20 40 50 30 10 20 Rain shwrs S S C C S C S Tstms S C S $$ MDZ011-122000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 88 72 90 73 86 Temp 72 74 82 86 86 81 76 74 72 75 84 88 88 82 77 75 73 74 79 82 85 80 Dewpt 69 69 67 67 67 68 69 69 69 71 71 71 71 70 70 70 70 69 69 69 68 67 RH 90 84 61 53 53 65 79 84 90 87 65 57 57 67 79 84 90 84 72 65 57 65 Wind dir NW NW N NW NW SW SW W W W W W W SW SW W N NE NE NE N NE Wind spd 3 4 4 3 4 2 2 2 2 3 5 6 6 2 1 1 2 2 3 4 5 2 Clouds B2 B1 SC B1 SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 SC PoP 12hr 10 20 20 40 60 QPF 12hr 0 0 0.01 0.06 0.24 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C L L C C Tstms S S S S S S S C C S Heat index 85 89 89 84 89 94 94 86 85 88 82 Max heat 89 90 94 94 83 85 88 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 86 68 86 74 89 69 86 Temp 71 71 83 77 69 71 83 80 75 76 86 81 72 71 83 79 Dewpt 64 61 61 61 64 66 69 69 70 71 71 68 66 65 64 63 PWind dir N NE SE S SW NW N N Wind char LT LT LT LT LT GN LT LT Avg clouds SC FW FW SC SC SC SC B1 B1 B1 SC B1 FW FW FW FW PoP 12hr 10 5 10 40 50 30 10 10 Rain shwrs S C C S C Tstms S C S $$ WVZ052-122000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 67 87 67 83 Temp 69 71 78 83 84 78 72 70 69 72 81 86 85 80 73 70 68 70 76 81 82 78 Dewpt 67 66 67 67 67 69 68 68 67 70 71 70 70 69 69 70 68 69 69 69 68 68 RH 93 84 69 59 57 74 87 93 93 93 72 59 61 69 87100100 97 79 67 63 71 Wind dir W NW NW NW NW W W S S SW W W W NW W NW N NW N N N N Wind spd 4 4 4 5 4 2 2 1 1 1 6 6 6 4 2 1 2 2 3 5 4 2 Clouds B2 SC B1 B1 SC SC B1 B1 SC FW SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 PoP 12hr 10 20 30 50 60 QPF 12hr 0 0.03 0.12 0.09 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C L L C C Tstms S S S S S S S S S C C Heat index 86 87 85 91 90 83 84 85 Max heat 86 88 91 92 84 85 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 83 64 86 70 86 64 83 Temp 67 66 81 76 67 68 84 81 73 72 84 80 69 67 82 78 Dewpt 65 62 63 64 63 65 70 72 71 71 70 68 65 64 63 63 PWind dir N NE SE SW SW NW NW NW Wind char LT LT LT LT LT GN LT LT Avg clouds SC SC FW SC SC SC B1 B1 B1 B1 SC B1 FW FW FW FW PoP 12hr 10 10 20 40 50 30 10 5 Rain shwrs S S C C S S C Tstms C S S $$ VAZ506-122000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 87 69 89 70 85 Temp 71 72 79 84 85 80 74 72 70 72 82 87 87 81 75 74 72 71 78 82 84 79 Dewpt 68 68 69 69 69 69 71 70 69 72 72 72 73 71 72 72 71 71 74 74 73 72 RH 90 87 72 61 59 69 90 93 97100 72 61 63 72 90 93 97100 88 77 70 79 Wind dir NW NW NW NW NW W W SW W W W W W W W NW NW N N N NW N Wind spd 5 5 6 4 4 3 2 2 2 2 6 6 5 2 2 1 2 3 3 5 5 2 Clouds B2 B1 SC B1 B1 SC B1 SC FW SC SC B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 SC PoP 12hr 5 20 40 50 60 QPF 12hr 0 0.01 0.07 0.05 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C L L C C Tstms S S S S C C C C Heat index 88 89 83 87 94 94 85 88 90 Max heat 88 90 94 95 88 91 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 85 66 87 71 88 67 84 Temp 70 69 83 77 68 70 85 81 74 74 85 80 71 69 82 79 Dewpt 68 65 68 68 67 69 74 73 72 73 75 72 68 68 69 68 PWind dir N N SE S SW NW NW NW Wind char LT LT LT GN GN GN LT LT Avg clouds SC SC FW SC SC B1 SC B1 B1 B1 SC B1 FW FW FW FW PoP 12hr 10 10 20 40 40 30 10 10 Rain shwrs S S C C S C Tstms S S S $$ VAZ037-122000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 70 90 70 87 Temp 70 71 81 86 86 80 75 73 71 71 84 88 86 80 76 73 72 71 81 86 84 78 Dewpt 67 67 67 68 68 69 71 69 69 71 71 71 73 72 73 72 72 71 73 74 74 72 RH 90 87 63 55 55 69 87 87 93100 65 57 65 77 90 97100100 77 68 72 82 Wind dir SW S NW NW NW N S W SW S SW SW W SW N N N N NW W NW N Wind spd 3 1 3 3 4 3 1 2 1 1 2 4 4 1 0 0 0 0 3 4 4 4 Clouds B1 SC SC B1 SC SC SC SC FW SC SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 SC PoP 12hr 10 10 30 30 70 QPF 12hr 0 0 0.07 0.01 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C C L L S Tstms S S S S S C Heat index 83 89 89 83 89 94 93 84 86 94 91 Max heat 89 91 94 95 94 94 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 85 68 89 72 91 68 86 Temp 72 69 84 78 71 70 86 82 75 74 89 83 72 70 84 79 Dewpt 70 67 66 67 67 68 71 72 71 72 71 71 69 67 66 66 PWind dir N E SE SW SW NW N NE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC B1 B1 SC B1 SC SC B1 SC SC FW SC PoP 12hr 20 10 20 20 30 30 20 20 Rain shwrs S S S S C C S S Tstms S C $$ MDZ003-122000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 86 67 87 67 84 Temp 69 70 78 83 83 78 73 70 68 71 80 85 85 79 73 70 68 70 76 81 83 78 Dewpt 67 67 68 67 67 68 69 68 68 70 71 71 70 69 70 69 68 69 69 69 68 68 RH 93 90 71 59 59 71 87 93100 97 74 63 61 72 90 97100 97 79 67 61 71 Wind dir W NW NW NW W W W SW W W W W W W W NW N N N N N N Wind spd 3 3 3 5 5 3 3 2 2 3 5 6 6 4 2 2 3 2 3 4 5 3 Clouds B2 SC SC B1 SC B1 B1 B1 SC SC SC B1 B1 B1 B2 B1 B2 B2 B2 B1 B1 SC PoP 12hr 10 30 20 50 60 QPF 12hr 0 0.02 0.03 0.06 0.14 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C C C L L C C Tstms S S S S S S S S C C Heat index 86 86 83 90 90 84 86 Max heat 86 88 90 90 84 86 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 84 65 87 70 86 64 84 Temp 67 66 82 76 67 69 83 80 73 72 84 80 69 67 82 78 Dewpt 64 62 64 64 63 65 71 72 70 71 71 68 66 65 65 64 PWind dir N N SE SW SW NW N NW Wind char LT LT LT GN LT GN LT LT Avg clouds SC FW FW SC SC SC B1 B1 B2 B1 SC SC FW FW FW FW PoP 12hr 10 10 20 50 60 20 10 5 Rain shwrs S C C L S S S Tstms C C S $$ MDZ017-122000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 73 91 74 87 Temp 74 75 81 85 86 81 77 76 75 77 84 89 89 82 79 77 75 77 81 84 86 81 Dewpt 70 70 71 71 70 71 71 72 72 74 73 73 74 72 74 74 74 74 74 74 73 72 RH 87 84 72 63 59 72 82 87 90 90 70 59 61 72 85 90 97 90 79 72 65 74 Wind dir NW NW NW N N NW S SW W W W SW S S S S NW NW N N NW N Wind spd 8 8 8 5 4 3 4 4 4 4 5 4 4 3 3 3 4 4 6 6 5 4 Clouds B2 B1 SC B1 SC SC FW SC FW FW SC SC SC B2 B2 B1 B1 B1 B1 B2 B2 B1 PoP 12hr 10 10 20 60 60 QPF 12hr 0 0 0.04 0.06 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L S S C C L L S Tstms S S S S S C S Heat index 85 90 91 85 90 97 98 87 86 91 93 85 Max heat 90 91 97 98 85 91 93 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 85 72 86 75 90 73 85 Temp 75 74 84 78 75 74 83 81 78 78 87 83 77 75 83 80 Dewpt 70 68 66 65 67 69 70 71 72 73 74 73 70 69 68 67 PWind dir NE NE SE S SW NW N N Wind char LT LT LT GN GN GN LT LT Avg clouds SC FW FW FW SC SC SC B1 B1 B1 SC B1 SC FW FW FW PoP 12hr 20 10 20 40 40 30 20 10 Rain shwrs S S C C S C S Tstms S S $$ WVZ502-122000- Petersburg WV 38.99N 79.15W Elev. 963 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 87 66 88 66 86 Temp 67 68 78 84 85 77 72 70 68 69 81 86 86 78 73 70 69 67 77 82 85 79 Dewpt 65 65 68 67 67 69 68 67 66 69 71 71 71 70 70 69 69 67 73 73 72 71 RH 93 90 71 57 55 76 87 90 93100 72 61 61 76 90 97100100 87 74 65 77 Wind dir S S W W NW W SW SW SW SW W W W W W N N N N NW NW N Wind spd 2 1 2 3 4 2 2 2 2 2 2 3 4 2 1 0 0 0 0 2 3 2 Clouds B2 SC SC B1 B1 B1 B1 SC SC SC SC B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 10 20 50 60 80 QPF 12hr 0 0 0.06 0.15 0.20 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L L L L D D D D S Tstms S S C C S S S S S C C Heat index 87 88 85 91 91 87 91 Max heat 87 89 91 92 87 91 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 86 65 91 69 88 63 86 Temp 68 64 83 79 69 68 88 83 74 71 85 79 68 65 83 78 Dewpt 67 64 68 68 65 66 72 72 70 70 72 69 66 65 66 66 PWind dir N NE S W W NW NW N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC SC B1 SC B1 B1 B1 B1 B1 SC SC SC FW PoP 12hr 20 20 20 40 50 30 20 10 Rain shwrs S S S S S C C C S C S S Tstms C C C $$ MDZ014-122000- Annapolis MD 38.99N 76.49W Elev. 7 ft 232 AM EDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 73 89 74 84 Temp 73 74 81 85 85 81 77 75 74 76 84 88 88 82 78 76 74 76 82 84 84 81 Dewpt 70 69 70 69 69 70 70 70 71 73 72 73 73 72 73 72 72 71 71 70 69 70 RH 90 84 69 59 59 69 79 84 90 90 67 61 61 72 85 87 93 85 69 63 61 69 Wind dir W NW N N N W S W W W W SW SW S N N NW NE NE N N NE Wind spd 5 5 6 4 5 2 1 3 3 3 6 6 6 2 0 0 3 4 6 8 6 2 Clouds B2 B2 SC B1 SC SC SC B1 SC FW SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 SC PoP 12hr 10 20 20 50 60 QPF 12hr 0 0.02 0.02 0.08 0.14 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C L L C C Tstms S S S S S S C C S Heat index 85 89 89 85 90 96 96 87 86 88 88 85 Max heat 89 90 96 96 84 88 88 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 83 70 87 74 90 71 86 Temp 74 73 82 79 73 73 85 82 77 76 88 84 75 73 84 81 Dewpt 67 64 63 64 67 69 71 72 72 73 74 72 68 68 68 67 PWind dir NE NE S S SW NW N N Wind char LT LT LT GN GN GN LT LT Avg clouds SC FW FW SC SC SC SC B1 B1 B2 SC B1 SC FW FW FW PoP 12hr 10 5 10 40 50 30 20 10 Rain shwrs S C C S C S Tstms S S S $$