Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
662 FOUS51 KLWX 082100 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 459 PM EDT Tue Sep 8 2026 VAZ054-090800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 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 68 89 73 89 70 Temp 85 78 74 71 69 69 81 87 87 81 77 75 74 74 82 87 85 79 75 73 71 70 Dewpt 62 62 64 62 61 60 61 60 60 61 61 60 61 62 65 67 69 70 71 68 65 64 RH 46 58 71 73 76 73 51 40 40 51 58 60 64 66 56 52 59 74 87 84 81 81 Wind dir S S S S S S S S S S S SW SW SW W W W NW W NW NW N Wind spd 6 5 5 5 5 6 9 12 12 10 13 13 13 11 10 12 13 11 9 9 9 10 Clouds B1 B1 SC SC SC SC SC FW FW SC CL CL FW SC SC B2 B2 B2 B2 B2 B1 SC PoP 12hr 0 0 0 60 70 QPF 12hr 0 0 0 0.15 0.17 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L L L S S Tstms S C S Heat index 86 82 87 87 82 84 90 89 Max heat 86 87 88 90 91 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 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 84 67 82 70 86 71 86 69 85 Temp 81 75 68 68 79 76 71 71 83 79 72 72 83 78 71 70 83 78 Dewpt 60 59 60 63 66 67 69 69 71 70 69 67 66 65 65 65 65 65 PWind dir N E SE SE SW SW W NE SE Wind char LT LT GN GN GN GN GN GN GN Avg clouds SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 5 20 30 30 20 10 20 10 20 Rain shwrs S S C C S S S Tstms S S S S $$ MDZ013-090800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 88 72 88 68 Temp 86 75 71 68 67 68 79 86 86 79 76 74 73 73 81 86 84 77 72 70 68 68 Dewpt 61 62 64 63 61 61 62 62 62 62 62 61 61 63 68 70 71 72 70 68 64 64 RH 43 64 79 84 81 78 56 45 45 56 62 64 66 71 65 59 65 85 93 93 87 87 Wind dir SW S S S W SW SW SW S S S SW SW SW W W W NW W NW NW N Wind spd 4 4 3 3 4 5 8 11 11 10 9 8 9 6 8 9 8 4 3 3 5 5 Wind gust 19 19 Clouds B1 SC SC SC SC SC SC SC FW FW CL CL FW SC SC B2 B2 B2 B2 B2 B1 SC PoP 12hr 0 0 5 60 70 QPF 12hr 0 0 0 0.18 0.19 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L L L S S Tstms S S Heat index 86 86 86 84 91 89 Max heat 88 86 88 91 91 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 64 82 68 86 68 85 67 84 Temp 79 75 66 67 79 76 70 70 83 80 71 70 83 78 69 68 81 77 Dewpt 60 62 61 64 67 69 69 70 73 72 69 68 68 68 66 66 67 67 PWind dir N E SE S S SW W NE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 0 5 30 30 20 20 20 10 20 Rain shwrs C C S S S S S Tstms S S S S $$ MDZ011-090800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 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 68 89 73 88 69 Temp 85 77 72 70 68 70 80 87 87 81 77 75 74 74 82 86 85 77 73 71 69 69 Dewpt 62 62 63 63 62 60 60 60 61 61 61 60 61 62 66 68 69 70 68 66 63 62 RH 46 60 73 78 81 71 51 40 42 51 58 60 64 66 58 55 59 79 84 84 81 78 Wind dir SE SE E SE W S SW SW S S S SW SW SW W W W NW NW NW NW N Wind spd 5 5 2 2 3 4 8 10 11 9 9 8 8 5 8 9 9 5 3 3 4 5 Wind gust 19 18 Clouds B1 SC SC SC SC SC SC SC FW FW CL CL FW SC SC B2 B2 B2 B2 B2 B1 SC PoP 12hr 0 0 5 60 70 QPF 12hr 0 0 0 0.20 0.18 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L L L S S Tstms S S Heat index 86 81 87 87 82 84 89 89 Max heat 86 87 89 89 90 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 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 66 83 71 87 70 86 69 84 Temp 80 75 67 68 80 77 71 72 84 81 72 71 84 79 70 70 82 78 Dewpt 57 57 59 61 62 64 68 69 69 69 68 66 64 65 65 64 63 64 PWind dir N E SE SE S SW W NE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 0 5 30 20 20 20 20 10 20 Rain shwrs C S S S S S S Tstms S S S S $$ WVZ052-090800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 62 87 68 84 63 Temp 84 75 70 66 63 64 80 86 87 81 73 72 70 70 79 82 81 74 69 67 64 63 Dewpt 61 61 61 60 59 59 63 64 64 64 62 62 63 66 69 70 71 69 67 65 63 62 RH 46 62 73 81 87 84 56 48 46 56 68 71 78 87 72 67 72 84 93 93 97 97 Wind dir SE SE W S SW S S S S S S SW SW SW W W W NW NW NW NW N Wind spd 3 3 3 3 3 2 5 11 10 6 8 8 6 5 8 9 8 5 3 3 4 4 Clouds SC B1 SC SC SC SC SC SC SC FW FW CL B1 B1 B1 B2 B2 B2 B2 B2 B1 SC PoP 12hr 0 20 30 70 60 QPF 12hr 0 0 0.03 0.33 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C L L L L S S Tstms S S C S Obvis PF PF Heat index 84 81 87 88 83 86 85 Max heat 85 87 88 86 86 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 60 80 65 84 64 84 63 83 Temp 79 71 63 63 79 74 68 67 82 77 68 66 82 75 66 66 81 74 Dewpt 59 58 58 60 67 67 66 67 70 68 66 65 66 65 63 63 65 64 PWind dir N E SE S SW SW NW W SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC B1 PoP 12hr 0 20 30 20 20 10 20 10 30 Rain shwrs S S C S S S C Tstms S S S S S $$ VAZ506-090800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 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 64 89 70 88 66 Temp 84 77 72 67 65 66 79 87 87 79 75 73 71 71 81 85 83 75 72 69 67 66 Dewpt 62 60 63 61 60 60 63 63 63 62 61 60 61 63 68 71 72 72 71 68 65 65 RH 48 56 73 81 84 81 58 45 45 56 62 64 71 76 65 63 70 90 97 97 93 97 Wind dir S S S S S S S SW SW S S SW SW SW W W W NW NW NW NW N Wind spd 4 4 4 5 6 5 8 10 11 9 10 10 9 5 5 8 6 5 3 3 5 5 Clouds B1 B1 SC SC FW SC SC SC FW SC CL CL FW SC SC B2 B2 B2 B2 B2 B2 B1 PoP 12hr 0 0 5 60 70 QPF 12hr 0 0 0 0.23 0.24 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L L L S S Tstms S C Heat index 85 88 88 84 90 88 Max heat 85 88 89 90 90 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 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 63 83 67 86 67 86 65 85 Temp 81 73 64 65 80 75 69 69 84 78 70 68 84 77 67 67 82 75 Dewpt 63 64 62 64 71 70 69 69 74 72 69 68 70 69 66 66 69 68 PWind dir N E SE S SW SW W NW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 5 20 30 30 20 10 20 10 20 Rain shwrs S S C C S S S Tstms S S S S S $$ VAZ037-090800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 61 87 66 90 67 Temp 84 75 69 66 62 63 78 86 85 77 72 70 68 68 82 88 86 77 73 71 69 67 Dewpt 61 62 61 59 58 59 62 62 61 60 60 61 61 62 66 68 69 69 70 69 68 67 RH 46 64 76 78 87 87 58 45 45 56 66 73 78 81 58 52 57 76 90 93 97100 Wind dir S SE N SE S S S S S S S SW SW SW SW W W W NW N N NE Wind spd 5 3 3 3 3 4 6 11 10 6 6 6 5 5 8 9 9 5 3 0 0 3 Clouds SC SC SC SC SC FW FW FW SC FW CL FW FW CL CL B1 B1 B2 B2 B2 B2 B1 PoP 12hr 0 0 0 40 70 QPF 12hr 0 0 0 0.04 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L C C Tstms S S S Obvis PF PF Heat index 84 86 85 84 92 90 Max heat 84 86 87 92 93 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 63 82 66 87 66 86 64 84 Temp 79 74 67 65 79 75 69 68 84 77 70 68 84 76 68 65 82 74 Dewpt 64 64 63 64 70 71 69 68 71 71 69 67 68 68 66 65 66 66 PWind dir NE NE SE S SE W W NW S Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 SC SC FW SC SC SC SC SC FW SC PoP 12hr 10 20 50 30 20 5 20 10 20 Rain shwrs S S C C S S S Tstms S C S S S S $$ MDZ003-090800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 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 63 87 68 83 62 Temp 82 75 68 66 64 65 77 85 86 81 73 71 69 70 77 80 79 73 68 66 63 62 Dewpt 61 61 61 60 59 60 63 65 65 64 63 62 64 66 70 71 71 69 66 65 61 62 RH 49 62 78 81 84 84 62 51 50 56 71 73 84 87 79 74 77 87 93 97 93100 Wind dir SE E E SE SW S S S S S S S S SW W W W W NW NW N N Wind spd 2 4 3 3 4 4 5 8 9 9 8 6 5 4 5 8 8 4 3 3 4 4 Clouds SC SC B1 SC SC SC SC SC SC FW FW FW B1 B1 B1 B2 B2 B2 B2 B1 B1 SC PoP 12hr 0 0 30 80 60 QPF 12hr 0 0 0.01 0.34 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C D D L L Tstms S C S Obvis PF Heat index 83 87 88 83 83 Max heat 83 87 88 83 83 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 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 60 80 65 83 64 84 63 82 Temp 77 71 61 62 77 73 67 67 80 76 67 66 82 75 66 64 80 74 Dewpt 58 59 57 60 68 68 66 67 72 70 66 65 68 66 64 63 67 66 PWind dir N E SE SE SW SW NW E S Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC B1 PoP 12hr 0 5 30 20 20 10 20 10 30 Rain shwrs S C S S S C Tstms S S S S $$ MDZ017-090800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 87 72 91 71 Temp 82 76 74 71 68 70 80 86 87 81 76 74 73 74 83 89 89 80 76 73 71 73 Dewpt 62 64 66 65 63 64 64 63 64 66 64 64 64 65 67 69 71 71 72 71 68 68 RH 51 66 76 81 84 81 58 46 46 60 66 71 73 74 59 52 56 74 87 93 90 84 Wind dir SE S S SW SW SW SW S S S S SW SW SW SW SW SW SW W NW N N Wind spd 9 8 8 8 6 9 10 11 12 11 11 12 12 11 11 9 8 8 4 5 6 9 Clouds SC B1 SC B1 SC SC FW FW SC FW CL CL CL CL FW SC SC B2 B2 B2 B2 B1 PoP 12hr 0 0 0 30 60 QPF 12hr 0 0 0 0.07 0.08 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L Tstms S S Heat index 83 82 87 88 83 86 94 95 83 Max heat 83 87 88 94 97 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 69 82 71 85 71 85 70 84 Temp 80 76 72 73 79 77 74 74 83 80 75 74 83 79 73 73 82 78 Dewpt 64 63 66 66 67 68 71 71 73 72 71 70 69 69 68 68 68 68 PWind dir N E SE S S SW S NE E Wind char LT LT GN LT LT LT GN LT GN Avg clouds SC SC SC B1 SC B1 B1 B1 SC SC FW SC SC SC SC SC FW FW PoP 12hr 5 10 30 30 20 10 20 10 10 Rain shwrs C C C S S S Tstms S C S S $$ WVZ502-090800- Petersburg WV 38.99N 79.15W Elev. 963 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 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 61 89 67 86 62 Temp 85 73 68 64 62 63 80 86 89 79 72 69 69 69 78 84 83 74 70 66 64 63 Dewpt 61 61 61 59 58 60 65 65 65 64 63 62 62 65 69 69 69 69 67 66 64 63 RH 45 66 78 84 87 90 60 50 45 60 73 78 78 87 74 61 63 84 90100100100 Wind dir SE S S S S S SW W SW SW SW SW SW SW W W W W W N N N Wind spd 3 2 2 3 3 3 5 5 6 4 5 4 4 4 5 6 6 3 1 0 0 0 Clouds B1 SC SC SC SC SC SC SC SC FW CL CL SC B1 B1 B2 B2 B2 OV B2 B2 B1 PoP 12hr 0 20 20 70 70 QPF 12hr 0 0 0 0.18 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C L L L L C C S Tstms S S S Obvis PF Heat index 85 82 88 91 88 87 Max heat 85 88 91 88 88 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 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 84 64 88 62 86 61 86 Temp 79 73 63 61 81 75 67 65 86 78 66 64 83 76 65 62 83 75 Dewpt 64 64 61 61 71 70 66 65 71 69 65 64 68 66 63 62 67 66 PWind dir NE SE S SW W SW W SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B2 B1 B1 SC B1 SC SC SC B1 SC SC FW B1 PoP 12hr 20 20 60 20 30 5 30 10 40 Rain shwrs S S S C L S S C S C C Tstms S S S S S $$ MDZ014-090800- Annapolis MD 38.99N 76.49W Elev. 7 ft 459 PM EDT Tue Sep 8 2026 Date 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 88 72 88 70 Temp 82 77 74 71 69 70 82 87 87 81 77 75 74 74 84 88 87 79 74 72 70 70 Dewpt 65 64 66 64 62 61 63 63 64 65 64 62 62 63 67 70 71 72 72 69 66 65 RH 56 64 76 79 78 73 53 45 46 58 64 64 66 69 57 55 59 79 93 90 87 84 Wind dir S S S SW SW SW SW S S S S SW SW SW SW W W NW W N N N Wind spd 9 5 5 5 5 8 10 13 13 12 11 11 10 9 9 10 10 5 3 4 6 9 Clouds B1 SC SC SC SC FW SC SC FW FW CL CL FW SC SC B2 B2 B2 B2 B2 B2 B1 PoP 12hr 0 0 0 60 70 QPF 12hr 0 0 0 0.09 0.22 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L L L S S Tstms S S S Heat index 84 83 88 88 83 87 93 93 Max heat 84 88 89 93 93 Date 09/11 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 66 83 69 86 70 86 69 85 Temp 79 76 69 69 80 77 72 72 84 80 73 72 84 79 71 71 82 78 Dewpt 59 61 62 65 67 68 69 71 73 72 70 69 69 68 67 67 68 67 PWind dir N E SE SE S SW W NE SE Wind char LT LT GN LT LT LT LT LT GN Avg clouds SC SC SC SC B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 5 5 30 30 20 20 20 10 20 Rain shwrs C C S S S S S Tstms S S S $$