Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
180 FOUS51 KLWX 240629 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 229 AM EDT Mon Aug 24 2026 VAZ054-242000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 85 63 86 65 88 Temp 64 65 78 82 83 75 69 66 63 65 77 83 85 79 71 67 65 67 80 86 87 81 Dewpt 56 56 57 56 54 52 52 53 53 54 55 55 56 59 59 59 59 59 60 60 61 63 RH 75 73 48 41 37 45 55 63 70 68 47 38 37 50 66 75 81 75 51 42 42 54 Wind dir SW NW W W W NW NW NW NW NW NW NW W W NW NW N NE S S S SE Wind spd 4 4 6 10 10 9 8 5 6 6 9 9 9 5 3 2 3 2 5 10 11 12 Clouds CL CL CL FW FW FW FW FW FW FW FW FW SC FW FW FW FW FW FW SC B1 B1 PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 82 81 86 87 82 Max heat 82 83 82 84 86 87 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 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 71 88 71 88 71 88 71 88 Temp 73 73 86 79 73 72 85 81 73 71 85 80 73 73 86 82 Dewpt 66 67 69 69 70 69 69 68 68 67 66 66 67 67 67 67 PWind dir S S S W NW NE SE S Wind char GN GN GN LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 B1 B1 B1 SC SC SC FW SC SC SC SC PoP 12hr 30 60 50 30 20 10 10 20 Rain shwrs C C L C S C S S Tstms S S C S C S S $$ MDZ013-242000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 61 84 64 86 Temp 63 64 77 80 80 71 67 63 61 63 76 82 82 74 69 66 64 66 79 85 83 76 Dewpt 57 58 60 59 56 56 55 55 55 57 59 59 60 63 63 62 62 63 65 64 65 67 RH 81 81 56 49 44 59 65 75 81 81 56 46 47 69 81 87 93 90 62 50 55 74 Wind dir W W W W W NW NW W W W NW W NW NW NW NW NW NE SE S S SE Wind spd 2 3 5 9 8 4 3 2 3 3 5 5 5 2 1 1 1 1 3 6 8 8 Clouds FW CL CL FW FW FW FW CL CL CL FW SC SC SC FW FW FW FW FW SC B1 B1 PoP 12hr 5 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 81 80 82 82 86 85 Max heat 81 82 82 83 86 86 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 86 70 87 69 86 69 86 Temp 71 71 85 76 70 71 84 78 71 70 84 78 70 71 84 79 Dewpt 67 69 72 72 70 71 72 71 69 68 68 69 67 68 70 70 PWind dir S S SW SW NW NE E SE Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 B1 B1 B1 SC SC FW FW SC SC SC SC PoP 12hr 30 70 50 30 10 10 10 30 Rain shwrs C C L C S C C Tstms S S C C S S $$ MDZ011-242000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 84 63 85 65 87 Temp 64 66 77 82 81 72 68 64 63 65 77 83 82 75 70 67 65 67 80 86 83 77 Dewpt 56 56 55 54 53 53 53 54 54 54 54 54 57 59 59 60 60 59 59 59 62 62 RH 75 70 47 38 38 51 59 70 72 68 45 37 43 58 68 78 84 75 49 40 49 60 Wind dir W W W W W NW NW NW W W NW NW NW NW NW N N N SE S S SE Wind spd 2 2 5 10 9 4 2 1 2 3 5 6 5 2 1 0 1 0 2 5 9 6 Clouds FW CL CL FW FW FW CL CL CL FW FW SC SC SC FW FW FW FW SC SC B1 B1 PoP 12hr 5 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 82 81 84 Max heat 81 82 82 83 85 86 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 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 71 87 71 88 70 87 70 87 Temp 72 73 86 77 72 72 85 79 72 71 85 79 71 72 85 80 Dewpt 66 67 68 69 69 69 68 68 68 65 64 65 65 65 66 67 PWind dir S S S SW NW NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B2 SC B1 SC SC SC FW FW SC SC SC B1 PoP 12hr 30 70 60 30 10 10 10 30 Rain shwrs C C L L S C C Tstms S S C C S S $$ WVZ052-242000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 56 82 57 85 Temp 58 61 73 79 78 69 61 58 56 60 74 81 80 72 64 60 58 61 76 83 84 78 Dewpt 55 57 56 52 51 52 52 53 53 54 56 54 55 58 59 59 58 59 60 58 60 62 RH 90 87 55 39 39 55 72 83 90 81 53 39 42 61 84 96100 93 58 43 44 58 Wind dir SW SW W W W NW W N SW W NW NW NW NW N N N N N S S SE Wind spd 4 4 9 10 9 5 1 0 1 3 8 8 6 3 0 0 0 0 0 6 6 6 Clouds FW FW CL FW FW FW CL CL FW SC FW SC SC SC FW FW SC SC SC B1 B1 B1 PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 81 80 83 84 Max heat 80 81 81 83 85 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 86 63 85 63 85 63 86 Temp 68 68 85 77 67 67 84 77 67 67 83 77 67 67 84 78 Dewpt 63 65 66 68 67 66 66 67 65 64 62 63 63 64 64 65 PWind dir S S S NW NW N N SW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC B2 B1 SC SC SC FW FW FW SC FW SC B1 B1 PoP 12hr 20 60 20 10 5 5 5 10 Rain shwrs S L S Tstms S C S $$ VAZ506-242000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 83 58 84 61 87 Temp 60 62 76 81 81 72 64 61 59 61 75 82 82 74 68 63 61 63 79 85 86 80 Dewpt 56 58 61 60 57 55 54 54 54 55 59 60 60 63 62 62 60 62 64 65 64 66 RH 87 87 60 49 44 55 70 78 83 81 58 47 47 69 81 97 97 97 60 51 48 62 Wind dir SW W W W W NW NW NW NW W NW NW NW NW N N N N S S S SE Wind spd 2 1 4 8 9 5 3 1 2 3 6 6 5 2 0 0 0 1 3 8 8 6 Clouds CL CL CL SC FW FW CL FW CL FW FW SC FW SC SC SC FW FW FW SC B1 B1 PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 82 81 82 82 87 87 82 Max heat 82 83 82 83 87 89 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 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 87 68 87 67 87 68 88 Temp 70 70 86 77 70 70 85 79 70 69 84 78 70 70 85 80 Dewpt 67 68 72 71 70 70 72 71 69 68 69 69 67 68 70 70 PWind dir S S S W NW N E SW Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 B1 SC SC SC SC FW FW SC SC SC SC PoP 12hr 30 60 40 20 10 10 5 20 Rain shwrs C S L C S S Tstms S C S S S $$ VAZ037-242000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 56 84 61 86 Temp 60 61 78 83 83 72 64 60 57 58 76 82 82 73 68 63 61 63 78 84 85 78 Dewpt 54 56 57 54 53 52 52 51 51 53 54 54 55 59 57 57 56 57 60 61 63 66 RH 81 84 48 37 36 49 65 72 80 83 46 38 40 62 68 81 84 81 54 46 48 67 Wind dir W SW W W NW N N N N W N S S N N N N N S S S SE Wind spd 3 3 5 8 8 6 3 0 0 3 0 2 4 0 0 0 0 0 3 8 8 4 Clouds CL CL CL FW FW FW FW FW SC FW FW FW FW FW FW FW FW FW FW SC SC B1 PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C Heat index 84 86 Max heat 82 83 81 82 84 86 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 86 66 86 66 86 67 87 Temp 70 67 85 76 69 67 84 77 70 67 84 78 69 69 85 79 Dewpt 65 66 69 70 68 67 68 70 68 67 67 69 67 66 67 69 PWind dir S S SW S N E N S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 B1 SC B1 SC SC FW FW FW SC SC SC PoP 12hr 30 60 40 30 10 10 10 20 Rain shwrs C S L C C S Tstms S C S C S $$ MDZ003-242000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 80 56 82 58 85 Temp 58 60 73 79 75 67 61 58 56 59 73 80 78 71 64 60 58 61 76 83 84 77 Dewpt 56 58 58 55 53 55 55 54 53 56 59 58 58 62 61 60 58 60 62 61 61 64 RH 93 93 59 44 46 65 81 86 90 90 62 47 50 73 90100100 97 62 47 46 64 Wind dir S SW W W W W W W SW SW NW NW NW NW N N N NE S S S SE Wind spd 3 3 9 9 9 5 2 1 1 2 5 8 6 3 1 0 0 1 2 6 5 4 Clouds FW FW FW FW FW FW FW FW CL CL FW SC SC SC FW FW FW SC SC SC B1 B1 PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 81 83 84 Max heat 81 81 83 84 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 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 66 86 65 85 64 85 65 86 Temp 68 68 85 76 68 67 83 77 67 66 82 76 67 68 83 78 Dewpt 64 66 68 69 67 67 68 68 65 65 64 65 63 64 66 67 PWind dir SE S S W NW NW NE W Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 SC SC SC FW FW FW SC SC SC SC SC PoP 12hr 20 60 30 10 5 5 5 10 Rain shwrs S L C Tstms S C S $$ MDZ017-242000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 67 84 68 86 Temp 68 71 79 83 83 76 72 70 67 69 76 81 83 77 72 69 68 71 81 85 83 77 Dewpt 60 62 61 60 60 63 60 59 58 59 59 59 59 63 62 63 63 64 64 63 65 67 RH 76 73 54 46 46 64 66 68 73 70 56 47 44 62 71 81 84 79 56 48 55 71 Wind dir W NW W SW S SE N N NW NW NW NW SW SW W W W W S S SE S Wind spd 2 2 3 5 5 3 5 6 5 5 5 3 3 3 3 3 2 2 3 6 12 11 Clouds SC FW FW FW SC FW FW CL FW FW FW FW FW FW FW FW FW FW FW SC SC SC PoP 12hr 0 5 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 83 83 81 83 83 86 85 Max heat 83 84 81 83 86 86 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 87 72 86 72 85 72 85 Temp 74 75 86 79 74 74 83 79 73 74 82 79 74 74 83 80 Dewpt 68 70 71 72 72 72 73 73 71 71 70 70 70 71 71 72 PWind dir S S SW S W NE S S Wind char GN GN LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B2 B1 B1 B1 SC SC SC FW SC SC SC SC PoP 12hr 30 50 60 40 20 10 10 20 Rain shwrs C C C L S S C S S Tstms S S C C S S S $$ WVZ502-242000- Petersburg WV 38.99N 79.15W Elev. 963 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 79 53 83 56 88 Temp 57 58 72 78 75 66 59 55 53 55 73 81 82 72 63 58 56 58 76 86 87 77 Dewpt 53 55 55 52 52 52 52 51 50 52 56 57 57 59 58 56 55 56 61 60 61 64 RH 86 90 55 40 45 61 78 86 89 90 55 44 43 64 84 93 96 93 60 42 42 64 Wind dir S E W W W SE S SW S S NW NW NW NW W N SW SW S S S S Wind spd 3 3 8 8 8 3 1 2 2 2 1 2 4 2 1 0 1 1 1 3 3 2 Clouds SC FW FW CL FW FW FW FW SC FW FW FW FW SC FW FW FW SC SC SC B1 B1 PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 81 82 86 87 Max heat 81 82 86 88 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 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 64 88 62 86 62 86 63 88 Temp 66 66 86 77 65 64 84 76 64 64 84 76 65 65 86 78 Dewpt 62 63 65 67 64 64 66 67 63 63 64 65 62 63 65 66 PWind dir S SW SW W W NW W W Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC B1 SC SC SC SC FW FW SC FW SC SC SC SC PoP 12hr 10 50 20 20 0 10 5 10 Rain shwrs S C S S Tstms C S S $$ MDZ014-242000- Annapolis MD 38.99N 76.49W Elev. 7 ft 229 AM EDT Mon Aug 24 2026 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 64 83 66 84 Temp 66 67 78 82 82 75 70 67 64 66 77 82 82 76 72 68 66 68 80 84 83 78 Dewpt 59 59 57 57 57 57 57 57 57 57 57 57 59 61 63 63 63 64 63 62 64 65 RH 78 75 48 43 43 54 63 70 78 73 50 43 46 60 73 84 90 87 56 48 53 64 Wind dir N W W W W NW NW NW NW NW NW W SW W N N N N SE S S S Wind spd 0 3 5 9 8 5 4 3 4 5 6 5 6 3 0 0 0 0 4 9 11 10 Clouds FW CL FW SC SC FW FW FW FW FW FW SC B1 SC FW FW FW FW FW SC SC B1 PoP 12hr 5 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 82 82 82 82 81 85 84 Max heat 82 83 82 83 85 85 Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun 08/30/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 84 71 87 71 86 71 87 Temp 74 74 84 78 72 73 84 80 73 73 84 79 73 73 85 80 Dewpt 68 69 71 72 71 71 73 71 70 69 69 69 68 69 71 71 PWind dir S S SW S W NE SE S Wind char GN GN LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B2 B1 B1 SC SC SC FW FW SC SC SC SC PoP 12hr 30 60 60 30 20 10 10 20 Rain shwrs C C L L S C S S Tstms S S C C S S S $$