FOUS51 KLWX 190631 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 231 AM EDT Tue May 19 2026 VAZ054-192000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 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 96 74 95 61 68 Temp 72 74 86 92 94 90 82 78 74 76 87 94 89 80 74 70 65 62 63 66 65 63 Dewpt 62 63 63 61 60 60 62 61 60 61 63 60 62 68 68 64 59 54 52 52 52 51 RH 71 69 46 36 32 37 51 56 62 60 45 32 41 67 82 81 81 75 67 61 63 65 Wind dir S SW SW SW SW S SW S S SW W W W N N N N N NE NE NE NE Wind spd 5 8 8 9 13 11 11 12 10 9 9 11 14 12 10 11 12 13 12 11 10 9 Clouds SC FW FW FW SC SC SC SC FW FW CL B1 B2 OV OV B2 B1 B2 B2 B2 B2 B2 PoP 12hr 10 10 80 80 70 QPF 12hr 0 0 0.07 0.07 0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D D C C L L C C C Tstms S C S S Heat index 87 92 94 90 83 88 94 89 83 Max heat 92 95 85 94 91 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 55 64 55 70 61 76 62 77 Temp 58 57 60 59 57 57 65 68 64 63 73 72 65 64 73 73 Dewpt 53 52 52 55 55 57 65 65 63 63 65 66 64 63 63 65 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN LT Avg clouds B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 60 80 80 70 60 60 50 40 Rain shwrs C L D D D L L L L C C L C C C C Tstms S S S C S C $$ MDZ013-192000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 73 96 58 69 Temp 72 75 89 95 95 87 81 78 75 76 90 95 90 79 72 68 63 59 64 67 67 63 Dewpt 63 64 65 64 65 66 65 62 60 63 65 63 66 71 68 62 56 52 52 52 52 53 RH 73 69 45 36 37 50 58 58 60 64 44 35 45 77 87 81 78 78 65 59 59 70 Wind dir SW SW W W SW S SW SW SW W W W W NW N N N N NE NE NE E Wind spd 4 4 4 6 8 4 4 5 4 4 5 8 8 5 4 5 8 8 8 6 5 3 Clouds SC SC FW SC SC B1 SC SC SC FW FW B1 B1 B2 B2 B2 B1 B2 B2 B2 B2 B1 PoP 12hr 10 10 80 80 70 QPF 12hr 0 0 0.17 0.12 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D D C C L L C C C Tstms C C S Heat index 91 97 98 89 83 92 96 93 Max heat 98 99 8696 96 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 53 64 52 70 58 76 59 77 Temp 57 56 62 58 55 56 65 66 62 62 74 71 64 63 75 73 Dewpt 53 52 52 54 55 56 62 63 61 62 64 66 62 62 63 65 PWind dir E E E E E E E E Wind char LT GN LT GN LT LT LT LT Avg clouds B2 B2 B2 B2 OV OV OV B2 B2 OV B2 B2 B2 B2 B2 B2 PoP 12hr 50 80 90 70 70 50 50 40 Rain shwrs C C D D D D L L L C C C C C C C Tstms S S S S S S $$ MDZ011-192000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 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 97 74 95 60 69 Temp 72 75 89 95 95 87 81 78 74 77 91 95 90 79 72 68 63 60 64 67 67 64 Dewpt 63 63 64 61 62 65 64 62 61 61 63 61 64 70 68 61 55 49 48 49 48 50 RH 73 66 44 33 34 48 56 58 64 58 40 33 42 74 87 78 75 67 56 52 50 60 Wind dir S SW W W SW S SW SW SW W W W W N N N N N N NE E E Wind spd 3 3 3 6 8 3 3 4 3 3 5 9 8 5 3 4 8 8 6 6 5 2 Clouds SC SC FW FW SC B1 SC SC SC FW FW B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 B2 PoP 12hr 10 10 80 70 70 QPF 12hr 0 0 0.29 0.12 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L C C L L C C S Tstms C C Heat index 90 95 96 89 83 92 95 91 Max heat 96 97 86 95 94 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 56 64 54 69 60 76 61 77 Temp 58 58 62 59 56 57 65 67 63 62 74 72 64 63 75 74 Dewpt 51 49 48 52 53 56 60 62 60 60 61 64 61 60 60 63 PWind dir E E E E E E E E Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 OV OV OV B2 B2 OV OV B2 B2 OV B2 B2 PoP 12hr 40 80 90 70 70 50 50 40 Rain shwrs S C L D D D L L L C C C C C C C Tstms S S S S S S $$ WVZ052-192000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 96 69 93 55 67 Temp 68 73 89 94 96 89 78 73 70 75 89 92 86 77 70 65 59 56 62 65 65 63 Dewpt 59 61 62 60 59 61 60 59 58 61 62 61 65 65 61 56 51 49 47 46 46 47 RH 73 66 41 32 29 39 54 62 66 62 41 36 50 67 73 73 75 77 58 50 50 56 Wind dir SW N W W SW SW SW SW SW WW W NW N N N N N NE NE E SE Wind spd 3 0 8 10 9 4 2 3 4 4 10 11 12 10 9 9 10 10 9 6 5 2 Clouds SC FW SC SC SC SC SC SC SC FW FW SC B1 B2 B2 B2 B2 B2 B2 B1 B2 B1 PoP 12hr 5 5 80 50 60 QPF 12hr 0 0 0.04 0.02 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C L L C C C Tstms S C Heat index 89 94 96 89 89 92 88 Max heat 94 96 83 92 92 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 51 62 50 69 57 77 59 78 Temp 56 55 60 58 55 55 64 67 62 61 74 72 65 62 75 74 Dewpt 49 48 49 49 51 52 57 58 59 58 62 63 60 58 61 63 PWind dir E E E SE E E E SE Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B2 OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 90 80 80 50 60 40 40 Rain shwrs C C D D D L D L C C C L C C S C Tstms S S S C S C $$ VAZ506-192000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 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 98 72 96 58 67 Temp 71 74 89 96 96 90 83 78 73 75 90 95 90 79 74 68 63 59 62 65 65 63 Dewpt 61 63 65 63 62 62 61 61 59 62 64 62 66 69 67 63 57 54 53 53 53 53 RH 71 69 45 34 33 39 47 56 62 64 42 34 45 72 79 84 81 83 72 65 65 70 Wind dir S SW W SW S S SW S S SW W W NW N N N N N N NE NE E Wind spd 5 3 3 6 9 5 6 8 4 3 4 8 10 9 6 8 10 10 9 8 6 3 Clouds SC FW FW SC B1 SC SC SC SC FW FW B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 10 80 80 70 QPF 12hr 0.01 0 0.15 0.06 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L D D L L L L C C C Tstms S C C S Heat index 91 98 97 90 83 91 96 93 Max heat 98 100 86 96 95 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 53 63 52 71 59 77 60 78 Temp 57 56 61 58 56 56 66 68 64 62 74 73 65 63 75 74 Dewpt 54 53 54 55 55 56 64 65 62 62 65 67 64 62 64 66 PWind dir E E E SE E E E SE Wind char LT GN LT LT LT LT LT LT Avg clouds B2 B2 OV B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 60 80 80 70 60 60 40 50 Rain shwrs C L D D D L L L L C C L C C S C Tstms C S S C S C$$ VAZ037-192000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 68 96 59 68 Temp 69 71 89 96 95 87 79 75 70 72 90 96 93 81 73 70 65 60 64 67 65 63 Dewpt 57 61 61 58 56 58 58 58 56 60 60 57 58 63 67 67 63 59 55 53 51 50 RH 66 71 39 28 27 38 49 55 61 66 37 27 31 54 81 90 93 96 73 61 60 62 Wind dir SW SW SW SW SW SW SW SW S SW SW SW W N NE NE NE NE NE NE NE NE Wind spd 4 4 5 8 11 9 8 6 5 4 5 9 10 5 4 5 8 10 9 9 9 8 Clouds FW SC FW FW SC SC SC SC FW FW CL FW SC B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 5 5 50 80 80 QPF 12hr 0 0 0.09 0.13 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S D D L L D D L L L Tstms S C S Heat index 89 90 82 Max heat 95 96 84 95 94 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 52 63 53 73 60 79 61 79 Temp 57 55 61 62 58 57 69 72 65 63 76 74 66 64 77 75 Dewpt 53 54 54 55 56 56 65 66 64 63 66 67 66 64 65 66 PWind dir NE NE NE SE N E NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 80 80 70 60 50 70 50 50 Rain shwrs L D D L L C C L C S S L C S S C Tstms C C S C S C $$ MDZ003-192000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 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 95 69 91 56 67 Temp 69 73 88 93 95 89 78 73 69 75 87 90 84 76 69 64 58 57 61 65 65 63 Dewpt 61 63 65 63 63 63 62 61 60 63 65 66 69 66 61 55 51 48 48 47 47 48 RH 76 71 47 37 35 42 58 66 73 66 48 45 61 71 76 73 77 72 62 52 52 58 Wind dir S SW W W W SW S S S SW W W NW N N N N N NE NE NE E Wind spd 3 2 8 10 10 4 2 2 3 4 9 11 11 9 8 8 10 10 8 5 5 3 Wind gust 20 20 Clouds SC FW FW SC SC SC SC SC SC FW SC B1 B2 B2 B1 B1 B2 B2 B2 B1 B2 B1 PoP 12hr 5 5 80 40 60 QPF 12hr 0 0 0.04 0.01 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C C C L L C C S Tstms C C Heat index 90 94 96 90 89 93 88 Max heat 94 96 84 93 91 Date Fri 05/22/26Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 51 62 50 67 57 75 59 77 Temp 55 55 60 58 55 54 62 65 62 60 72 72 63 62 74 73 Dewpt 50 48 51 51 53 53 59 59 60 59 63 64 61 59 63 64 PWind dir E E E SE E SE E SE Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B2 B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 40 80 90 80 70 60 40 30 Rain shwrs S C L D D L D D L C C L C C S C Tstms S S C S C $$ MDZ017-192000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 99 76 99 64 73 Temp 74 78 90 95 94 87 84 82 77 79 91 97 94 83 76 73 68 66 69 72 70 65 Dewpt 67 66 66 66 64 64 63 64 64 64 64 64 63 65 67 68 64 59 54 55 55 54 RH 79 67 45 39 37 46 49 55 64 60 41 34 36 55 74 84 87 78 59 55 59 68 Wind dir SW SW SW S S S S SW SW SW SW S S N NW N N N N N NE E Wind spd 9 8 6 8 10 8 10 9 9 9 6 8 9 6 4 4 9 12 12 11 10 6 Clouds FW FW FW FW FW FW FW FW FW CL CL CL B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 5 10 40 70 70 QPF 12hr 0 0 0.02 0.09 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L C C L L L L C Tstms S S S S S Heat index 93 98 96 88 85 83 93 99 95 85 Max heat 98 99 86 82 99 98 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 57 69 57 73 63 81 63 80 Temp 60 61 66 61 63 64 73 70 69 69 79 74 69 68 78 74 Dewpt 54 53 54 55 59 61 65 66 66 65 65 65 65 64 64 63 PWind dir E E E SE E E E E Wind char LT GN LT GN LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 80 70 80 70 60 50 40 Rain shwrs C L D L L C L D L C C L C C C C Tstms S S S S S S S S S $$ WVZ502-192000- Petersburg WV 38.99N 79.15W Elev. 963 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 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 96 68 92 55 69 Temp 68 72 87 93 96 90 76 72 69 73 85 91 86 79 70 65 60 56 62 67 67 64 Dewpt 56 60 61 60 58 60 59 57 56 60 61 62 64 65 63 59 56 54 53 53 52 50 RH 65 66 42 33 28 37 56 59 63 64 45 38 48 62 78 81 87 93 72 61 59 60 Wind dir S SW W W W SW S S SW SW W W W N N NE NE NE NE NE E E Wind spd 3 2 8 8 8 3 3 3 2 2 6 9 8 4 3 3 3 43 3 4 3 Clouds SC SC SC SC SC SC SC SC SC SC SC SC B1 B2 B2 B2 B2 OV OV B2 B2 B2 PoP 12hr 10 5 80 70 80 QPF 12hr 0 0 0.06 0.03 0.18 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L L L L D D L L C Tstms S C S Heat index 87 93 90 85 92 87 Max heat 93 95 82 92 90 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 50 66 53 77 60 81 60 82 Temp 56 54 62 60 59 56 69 70 65 63 77 76 66 64 78 77 Dewpt 50 50 55 53 55 56 63 62 60 60 65 64 61 61 64 64 PWind dir E E SE S S SW S SW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 OV OV B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 90 70 80 40 70 40 60 Rain shwrs C L D D L L L D C C C L C S C L Tstms S S C C S S C S C $$ MDZ014-192000- Annapolis MD 38.99N 76.49W Elev. 7 ft 231 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 72 92 60 68 Temp 71 75 89 92 90 82 79 78 75 76 89 92 88 77 72 70 65 61 66 67 67 64 Dewpt 63 64 65 64 65 64 65 64 62 63 64 63 65 68 69 65 59 52 51 51 52 53 RH 76 69 45 40 44 55 62 62 64 64 44 38 47 74 90 84 81 72 58 56 59 67 Wind dir S SW SW S S S S SW SW SW SW SW SW N N N N N N NE NE E Wind spd 5 5 5 9 11 8 8 8 6 5 6 9 9 6 3 6 10 11 11 10 8 5 Clouds FW FW FW FW SC SC SC SC FW CL FW B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 10 80 70 70 QPF 12hr 0.01 0 0.34 0.11 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L L C C L L C C S Tstms S C S Heat index 91 94 92 83 90 93 90 Max heat 94 94 82 93 93 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 56 64 55 70 61 77 62 78 Temp 58 59 64 57 59 58 66 65 65 65 75 72 66 65 76 73 Dewpt 53 52 51 52 56 56 60 61 62 62 62 64 63 61 61 63 PWind dir E E E E E E E E Wind char LT GN LT GN LT LT LT LT Avg clouds B2 B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 80 80 80 70 60 50 40 Rain shwrs S C D D D D D D L C C L C C C C Tstms S S S S S S $$