FOUS51 KLWX 220301 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1100 PM EDT Fri Aug 21 2026 VAZ054-220800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 68 79 69 85 66 Temp 72 70 69 69 72 75 78 75 72 71 70 71 78 82 84 78 72 68 66 67 Dewpt 61 62 65 67 68 69 69 68 69 69 69 68 67 64 62 60 59 58 59 59 RH 68 76 87 93 87 82 74 79 90 93 97 90 69 55 48 54 64 70 78 75 Wind dir SE E E E E E E E E SE W W NW W W NW NW NW W W Wind spd 3 4 4 5 9 8 8 6 4 4 5 8 12 12 13 10 9 9 8 9 Clouds B2 OV OV OV OV B2 B2 B2 B2 B2 B1 B1 SC SC FW SC FW FW FW SC PoP 12hr 70 80 30 5 0 QPF 12hr 0.20 0.64 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L D L C C C S S Tstms S S C C C C Heat index 83 85 Max heat 83 85 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 83 65 84 68 87 72 86 72 87 Temp 80 75 66 66 80 77 69 70 84 80 73 73 83 79 73 73 85 81 Dewpt 57 56 56 58 57 59 61 63 66 66 69 69 70 69 70 70 70 69 PWind dir W NW W S S S S SW W Wind char GN LT LT LT GN GN GN GN LT Avg clouds SC FW FW FW FW FW FW FW SC SC B1 B1 B1 B1 B1 SC SC SC PoP 12hr 0 0 0 5 20 40 50 40 20 Rain shwrs S S C C C C C S Tstms S S S C S S $$ MDZ013-220800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 78 67 83 64 Temp 70 68 68 69 73 76 76 72 70 69 68 69 77 81 82 76 70 66 64 66 Dewpt 64 66 67 69 71 70 71 71 70 69 68 69 70 67 65 64 63 61 60 61 RH 81 93 97100 93 82 85 97100100100100 79 63 56 66 78 84 87 84 Wind dir SE E E E E E E E SE SE SW W W W W W NW W W W Wind spd 1 1 2 3 5 6 6 3 2 1 2 3 8 9 9 5 4 3 3 4 Clouds B2 OV OV OV OV OV OV B2 B2 B2 B2 B1 SC SC FW SC FW FW CL SC PoP 12hr 70 80 40 5 5 QPF 12hr 0.06 0.43 0.08 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D L C C C S S Tstms S C C S Heat index83 84 Max heat 83 85 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 62 82 65 85 69 85 69 86 Temp 79 74 65 64 80 75 67 68 83 77 71 72 82 78 71 72 84 79 Dewpt 60 60 59 60 59 62 63 65 68 70 70 71 73 72 71 71 72 72 PWind dir W NW W SW S S S SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW CL FW FW FW SC SC B1 B1 B1 B1 B1 SC SC SC PoP 12hr 0 0 0 0 20 50 50 40 20 Rain shwrs S S C C C C C S Tstms S S S C S S $$ MDZ011-220800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 68 79 69 85 65 Temp 71 69 69 70 74 76 76 73 71 70 69 71 79 84 82 75 71 67 65 67 Dewpt 61 63 65 66 66 67 68 67 68 69 68 68 66 64 61 60 59 59 59 58 RH 71 81 87 87 76 74 76 81 90 97 97 90 64 51 49 60 66 75 81 73 Wind dir N E E E E E E E SE SE SW W W W W W NW W W W Wind spd 0 1 1 2 5 6 6 3 1 1 1 3 6 9 10 5 3 3 3 3 Clouds B2 OV OV OV OV B2 B2 B2 OV B2 B2 B1 SC SC FW SC FW FW CL SC PoP 12hr 60 90 40 5 5 QPF 12hr 0.05 0.35 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D L C C C S S Tstms S C S Heat index 85 83 Max heat 85 85 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 83 63 83 66 86 71 86 71 87 Temp 80 74 66 65 81 76 68 69 83 78 72 73 83 79 72 73 85 80 Dewpt 56 56 57 57 55 57 60 62 64 66 68 69 69 69 70 69 69 69 PWind dir W NW W SW S S S SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW CL FW FW FW FW SC B1 B1 B1 B1 B1 SC SC SC PoP 12hr 0 0 0 5 20 50 50 40 20 Rain shwrs S S C C C C C S S Tstms S S S C S S $$ WVZ052-220800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 61 79 63 8158 Temp 65 63 61 63 72 77 77 72 67 66 64 65 76 81 79 72 64 60 58 61 Dewpt 58 59 61 62 64 66 67 67 67 66 64 65 63 60 58 58 58 58 57 58 RH 78 87100 97 76 69 71 84100100100100 64 49 49 61 81 93 96 90 Wind dir N N N N SE SE SE SE SE N SW W W W W W W W W W Wind spd 0 0 0 0 4 6 6 4 2 0 3 5 11 12 11 6 4 3 3 4 Clouds B1 B2 B2 OV OV OV B2 OV OV B2 B1 SC SC SC FW FW FW FW FW SC PoP 12hr 40 40 40 0 0 QPF 12hr 0.12 0.11 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C S S Tstms S C C C Obvis PF F Heat index 82 Max heat 82 81 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 56 81 59 84 65 83 65 85 Temp 79 71 59 59 79 74 61 61 82 77 67 68 82 77 67 68 83 78 Dewpt 55 55 56 56 56 57 58 59 63 65 66 67 68 68 67 67 68 68 PWind dir W W NW N S S S SW NW Wind char GN LT LT LT LT LT LT LT LT Avg clouds SC FW FW CL FW SC FW FW SC B1 B1 B1 B1 B1 B1 SC SC SC PoP 12hr 0 0 0 0 10 30 40 30 20 Rain shwrs C C S C C S Tstms S S C S $$ VAZ506-220800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 64 79 66 83 61 Temp 68 66 65 66 72 76 77 73 70 69 68 68 78 82 81 74 68 63 61 63 Dewpt 64 64 65 66 71 72 72 71 70 69 68 68 69 67 66 64 62 61 59 61 RH 87 93100100 97 87 85 93100100100100 74 61 60 71 81 93 93 93 Wind dir SE E N E SE E E E SE S SW W NW W W NW NW W W W Wind spd 1 1 0 1 4 5 5 3 2 1 1 3 10 10 10 5 4 3 3 3 Clouds B1 OV OV OV OV OV OV B2 OV B2 B1 SC FW SC FW SC FW FW CL SC PoP 12hr 50 70 40 5 0 QPF 12hr 0.08 0.58 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L C C C C S S Tstms S S S C C Obvis PF PF Heat index 85 83 Max heat 85 85 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 82 60 83 63 86 68 85 68 86 Temp 80 74 62 62 80 75 64 65 84 78 70 70 82 78 70 70 84 80 Dewpt 61 60 58 59 61 62 63 64 69 69 69 70 73 72 70 70 73 72 PWind dir W NW NW S S S S SW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW SC SC SC B1 B1 B1 B1 B1 B1 SC SC PoP 12hr 0 0 0 0 20 40 50 30 20 Rain shwrs S S C C C C C S Tstms S S S C S S $$ VAZ037-220800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 80 64 84 59 Temp 70 68 67 67 71 78 78 71 69 68 66 66 78 83 82 72 67 61 59 61 Dewpt 64 66 67 67 68 69 69 69 69 67 66 66 63 59 58 58 57 56 56 57 RH 81 93100100 90 74 74 93100 97100100 60 44 44 61 70 84 90 87 Wind dir N N NE NE NE E E N N N N W NW NW W NW NW NW W W Wind spd 0 0 1 3 3 3 3 0 0 0 0 4 6 8 8 5 5 3 1 3 Clouds OV OV OV OV B2 B2 B2 B2 B2 SC B1 SC FW FW FW FW FW FW FW FW PoP 12hr 50 50 50 0 0 QPF 12hr 0.19 0.19 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C C Tstms S S S S C C C Obvis F PF Heat index 83 82 Max heat 83 83 84 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 58 83 62 85 67 84 67 86 Temp 82 73 62 60 81 73 65 65 83 76 69 69 82 76 69 69 85 78 Dewpt 55 57 55 56 57 60 59 60 65 67 68 68 69 70 69 68 69 69 PWind dir W NW SE SE S S SW SW S Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW SC SC FW SC B1 B1 B1 B2 B1 SC SC SC PoP 12hr 0 0 0 0 20 30 60 20 30 Rain shwrs S S C C C L S C Tstms S S S C S $$ MDZ003-220800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 61 80 63 81 58 Temp 64 63 61 63 72 78 76 72 68 66 65 65 75 80 78 71 64 60 58 60 Dewpt 60 60 60 63 67 68 69 69 68 66 65 65 66 64 62 62 61 60 58 59 RH 87 90 97100 84 71 79 90100100100100 74 58 58 73 90100100 96 Wind dir E NE E E SE SE SE SE SE SW SW SW W W W W W W SW W Wind spd 2 1 2 2 4 5 6 4 3 3 3 4 10 11 11 5 3 2 2 3 Clouds SC B2 B2 OV B2 B2 B2 B2 OV B2 B1 B1 SC SC FW FW FW FW FW SC PoP 12hr 50 50 40 5 0 QPF 12hr 0.02 0.10 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C S S Tstms S C C C Heat index 82 Max heat 82 81 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 80 56 81 59 84 65 84 66 85 Temp 79 70 59 58 79 73 62 62 82 77 68 68 81 77 68 68 83 78 Dewpt 59 58 57 57 59 60 59 61 66 66 66 68 70 69 68 68 70 69 PWind dir W W W NE S SE S S NW Wind char GN LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW CL FW FW SC FW SC B1 B1 B1 B1 B1 SC SC SC PoP 12hr 0 0 0 0 10 30 40 30 20 Rain shwrs C C S C C S Tstms S C S $$ MDZ017-220800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 80 70 85 68 Temp 73 72 71 71 74 78 78 73 72 72 71 72 79 83 84 78 73 70 68 70 Dewpt 64 68 69 70 71 72 72 72 71 71 70 71 70 68 67 66 65 63 62 63 RH 73 87 93 97 90 82 82 97 97 97 97 97 74 61 57 67 76 78 81 78 Wind dir SE SE E E E E E SE E W W W NW W W NW NW NW NW NW Wind spd 3 4 4 6 9 8 6 4 3 3 4 4 6 5 5 3 4 5 5 5 Clouds OV OV OV OV OV OV OV B2 B2 B2 B2 B2 SC SC FW SC FW SC FW FW PoP 12hr 90 100 40 10 5 QPF 12hr 0.31 0.78 0.08 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D D D D C C C Tstms S C C C C S S Heat index 86 87 Max heat 86 87 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 68 82 70 84 72 84 72 85 Temp 81 75 70 70 79 76 72 73 83 79 74 75 83 79 74 74 83 79 Dewpt 61 62 62 62 61 63 65 68 69 70 71 72 73 72 72 73 73 72 PWind dir NW NW NW S S S S SW SW Wind char LT LT LT LT GN LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW SC B1 B1 B1 B2 B1 SC SC SC PoP 12hr 0 0 0 10 20 40 60 40 20 Rain shwrsS S C C C L C S S S Tstms S S S C S $$ WVZ502-220800- Petersburg WV 38.99N 79.15W Elev. 963 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 61 83 60 80 55 Temp 67 63 62 63 75 82 78 70 66 63 62 62 74 79 76 68 61 57 55 57 Dewpt 64 63 62 63 67 69 70 68 66 63 62 62 63 60 59 58 58 57 55 56 RH 90100100100 76 65 76 93100100100100 69 52 56 70 90100100 96 Wind dir NE N N N E E E NW SW SW SW W W W W W W W W W Wind spd 1 0 0 0 1 1 2 2 3 2 2 3 8 10 10 4 3 2 2 2 Clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC B1 FW SC FW FW FW FW FW SC PoP 12hr 30 70 50 0 0 QPF 12hr 0.01 0.13 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C L C C S S Tstms S C C C Obvis F F Heat index 85 Max heat 85 83 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 80 52 83 56 86 62 86 62 87 Temp 79 69 55 55 80 71 59 59 84 76 64 64 83 76 65 65 84 77 Dewpt 55 56 54 53 57 58 56 57 64 65 64 64 68 68 65 65 68 67 PWind dir W W NW W S SW W SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW FW FW FW FW SC SC B1 B1 B1 B1 SC SC SC SC PoP 12hr 0 0 0 0 20 30 40 10 20 Rain shwrs S S C C C S Tstms S S S C S $$ MDZ014-220800- Annapolis MD 38.99N 76.49W Elev. 7 ft 1100 PM EDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 78 69 83 67 Temp 73 71 70 71 75 77 77 74 72 71 70 71 79 83 83 78 73 69 67 69 Dewpt 63 65 68 68 69 69 69 69 70 70 70 69 68 66 64 63 63 61 61 61 RH 71 81 93 90 82 76 76 84 93 97100 93 69 57 53 60 71 76 81 76 Wind dir N N SE E E E E E SE N N W W W W W NW NW W W Wind spd 0 0 3 5 9 9 9 5 1 0 0 4 9 10 9 6 4 4 5 5 Clouds B2 OV OV OV OV B2 OV B2 B2 B2 B1 B1 SC SC FW SC FW FW FW SC PoP 12hr 80 90 50 10 5 QPF 12hr 0.11 0.49 0.13 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L D D L C C C S S Tstms S C C SHeat index 85 84 Max heat 85 85 Date 08/24 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 66 83 68 86 71 86 71 86 Temp 81 77 68 67 81 76 70 71 83 79 73 73 84 79 73 74 85 80 Dewpt 58 61 60 61 60 62 64 66 69 69 70 71 73 71 71 72 73 72 PWind dir W NW W SW S S S SW W Wind char GN LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW FW FW SC SC B1 B1 B1 B1 B1 SC SC SC PoP 12hr 0 0 0 5 20 50 50 40 20 Rain shwrs S S C C C C C S S S Tstms S S C S S $$