Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
448 FOUS51 KLWX 201200 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 800 AM EDT Sun Sep 20 2026 VAZ054-202000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 66 75 64 67 Temp 69 76 81 83 78 73 71 68 67 71 73 72 69 67 66 65 64 64 65 65 64 Dewpt 66 66 69 70 71 70 68 65 64 64 64 63 63 64 64 64 63 63 63 62 60 RH 90 71 67 65 79 90 90 90 90 79 73 73 81 90 93 97 97 97 93 90 87 Wind dir S SW SW SW S W N N N NE NE NE NE E NE NE NE NE NE NE NE Wind spd 8 13 12 10 8 6 8 11 11 11 11 12 11 11 11 13 14 16 17 18 17 Wind gust 28 33 28 Clouds B2 B2 B2 B2 OV B2 B1 B1 SC B2 B2 B2 OV OV OV OV B2 OV OV OV OV PoP 12hr 60 50 20 80 80 QPF 12hr 0.07 0.09 0 0.14 0.38 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L C C S L L D D D D L L L Tstms S C C S S S S Heat index 84 87 Max heat 84 87 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 59 65 57 65 55 66 55 68 Temp 61 59 63 63 60 58 63 62 57 56 64 62 57 56 67 63 Dewpt 58 56 58 57 57 56 57 55 54 51 51 52 51 50 53 53 PWind dir NE NE NE NE N N N N Wind char BZ BZ BZ BZ GN BZ GN BZ Avg clouds OV OV B2 B2 B2 B2 B2 B1 B2 B1 SC SC B1 SC SC SC PoP 12hr 60 60 50 40 20 20 10 10 Rain shwrs L L C L C C C C S S S S Tstms S S $$ MDZ013-202000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 63 74 59 67 Temp 68 75 80 80 74 70 67 64 64 70 72 71 68 64 63 61 60 64 65 65 62 Dewpt 66 67 69 70 71 70 67 63 64 66 64 64 63 63 63 61 60 64 63 63 59 RH 93 76 69 72 90100100 97100 87 76 79 84 97100100100100 93 93 90 Wind dir S SW SW SW SW NW N N N NE NE NE NE E E NE NE NE NE NE NE Wind spd 8 10 9 6 3 2 4 6 8 9 9 9 8 8 8 10 12 13 14 14 13 Wind gust 18 20 23 24 26 27 28 Clouds OV B2 B2 B2 B2 B2 B1 B1 SC B2 B2 B2 OV OV OV OV OV OV OV OV OV PoP 12hr 70 50 30 80 70 QPF 12hr 0.14 0.17 0 0.15 0.40 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L C C L L D D L L L L L Tstms S C S S S S Heat index 83 83 Max heat 83 85 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 55 66 55 66 53 68 53 70 Temp 58 56 64 63 58 56 64 62 56 54 66 63 56 54 68 64 Dewpt 57 55 60 58 56 55 59 56 53 51 53 53 51 52 55 55 PWind dir NE NE NE NE N N N N Wind char GN BZ GN GN GN GN GN GN Avg clouds OV OV B2 B2 B2 B2 B2 B2 B2 B1 SC B1 SC SC SC SC PoP 12hr 60 50 50 30 20 20 10 10 Rain shwrs L C C C C C C C S S S S Tstms S $$ MDZ011-202000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 63 75 62 68 Temp 70 76 80 82 76 70 68 64 65 70 72 71 68 65 64 63 62 64 66 66 63 Dewpt 65 66 68 69 69 69 67 62 61 61 60 60 58 59 61 60 58 59 58 58 54 RH 84 71 67 65 79 97 97 93 87 73 66 68 70 81 90 90 87 84 75 75 72 Wind dir S S SW SW SW NW N N N NE NE NE NE E E NE NE NE NE NE NE Wind spd 8 10 9 6 3 2 4 6 8 9 9 9 8 6 6 10 12 13 14 16 14 Wind gust 20 23 24 25 26 27 Clouds OV OV OV B2 B2 B2 B2 SC B1 B1 B2 OV OV OV OV OV OV OV OV OV OV PoP 12hr 80 50 30 80 70 QPF 12hr 0.17 0.12 0 0.15 0.41 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L C C S L L D D L L L L L Tstms S C S S S Heat index 83 85 Max heat 83 85 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 58 67 58 67 55 69 56 71 Temp 59 58 65 64 59 58 65 63 57 56 66 64 57 57 69 65 Dewpt 55 52 54 53 54 52 53 51 51 49 49 49 50 49 50 50 PWind dir NE NE NE NE N N N N Wind char GN BZ GN GN GN GN LT GN Avg clouds OV OV B2 B2 B2 B2 B2 B2 B2 B1 SC B1 SC SC SC SC PoP 12hr 60 50 40 30 20 20 10 10 Rain shwrs L C C C C C C C S S S S $$ WVZ052-202000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 60 68 55 61 Temp 67 76 79 80 74 68 67 63 61 65 66 67 65 62 60 59 56 60 60 60 58 Dewpt 64 68 68 69 69 68 66 61 60 58 58 59 59 60 60 59 56 58 58 59 57 RH 90 76 69 69 84100 97 93 97 78 75 75 81 93100100100 93 93 96 96 Wind dir S SW W W NW N N N N N NE NE NE NE NE NE E NE NE NE NE Wind spd 9 8 8 5 1 2 6 9 9 8 8 6 5 5 5 8 9 9 10 10 10 Clouds B2 B2 OV B2 B1 B2 B1 B2 B2 B2 OV OV OV OV OV OV OV OV OV OV OV PoP 12hr 80 40 60 80 90 QPF 12hr 0.21 0.09 0.12 0.31 0.67 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D L C C S S S C D D D D D D D D L Tstms C C S S S S S Obvis PF Heat index 83 Max heat 83 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 51 60 50 61 49 65 49 67 Temp 55 52 58 59 55 52 59 58 53 51 63 59 53 52 66 61 Dewpt 55 52 52 53 54 52 53 52 51 50 50 50 50 49 51 52 PWind dir NE NE NE NE N N NW NW Wind char GN GN GN GN LT GN LT GN Avg clouds OV OV OV B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC PoP 12hr 70 60 50 40 20 20 10 10 Rain shwrs L L L C C C C C S S S $$ VAZ506-202000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 62 73 59 65 Temp 69 77 81 79 73 69 68 63 64 69 71 69 68 65 64 62 60 64 64 64 62 Dewpt 65 67 69 71 71 69 68 63 63 65 67 66 65 65 64 62 60 64 64 64 62 RH 87 71 67 77 93100100100 97 87 87 90 90100100100100100100100100 Wind dir S S SW SW S N N N N NE NE NE E NE NE NE NE NE NE NE NE Wind spd 10 11 8 5 3 2 4 9 9 8 6 8 6 5 5 9 10 11 11 11 11 Wind gust 21 23 Clouds B2 B2 B2 B2 B2 B2 B1 B1 B1 B2 B2 OV OV OV OV OV OV OV OV OV OV PoP 12hr 70 50 30 80 80 QPF 12hr 0.11 0.09 0 0.24 0.45 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L C C L L D D D D L L L Tstms S C C S S S S S Heat index 84 Max heat 84 86 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 54 63 53 64 50 66 51 67 Temp 58 55 61 61 57 55 62 60 54 52 64 60 54 53 67 61 Dewpt 58 55 61 60 57 55 60 58 54 52 56 55 52 51 57 57 PWind dir NE NE NE NE N N N N Wind char GN GN GN GN GN GN GN GN Avg clouds OV OV B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC PoP 12hr 70 60 50 40 20 20 10 10 Rain shwrs L L L L C C C C S S Tstms S $$ VAZ037-202000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 66 75 61 66 Temp 66 76 83 82 75 71 70 68 67 71 74 70 68 65 65 63 62 65 66 64 63 Dewpt 65 68 70 71 70 69 68 67 67 66 65 66 65 65 65 63 62 65 65 64 63 RH 97 76 65 69 84 93 93 97100 84 74 87 90100100100100100 97100100 Wind dir S S SW S S N N NE NE NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 8 8 6 3 0 0 4 8 8 8 8 6 6 5 8 9 9 9 11 10 Wind gust 19 23 24 Clouds B1 B2 B2 B2 B2 B2 SC B1 B2 OV OV OV OV OV OV OV B2 B2 OV OV OV PoP 12hr 50 10 40 90 90 QPF 12hr 0.13 0 0.07 0.21 0.35 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S C D D D D L L D D D Tstms S C S S S S S S S C S Obvis PF PF Heat index 87 86 Max heat 87 90 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 55 60 53 62 51 66 50 68 Temp 60 56 60 59 58 54 61 59 55 52 65 60 53 51 67 60 Dewpt 60 56 58 59 58 54 58 56 55 52 54 54 52 51 53 54 PWind dir NE NE NE N N N NW N Wind char GN GN GN GN LT LT LT LT Avg clouds OV OV B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC PoP 12hr 80 70 60 50 20 20 5 10 Rain shwrs D L L L L C C C S S Tstms S S S $$ MDZ003-202000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 59 69 54 62 Temp 66 74 79 77 72 67 64 61 61 64 67 67 65 62 61 58 56 59 60 60 58 Dewpt 64 67 69 69 68 67 64 59 59 59 60 61 60 60 60 58 56 59 59 59 58 RH 93 79 72 76 87100100 93 93 84 78 81 84 93 97100100100 96 96100 Wind dir S S SW W NW N N N N NE NE NE NE E NE NE E NE NE NE NE Wind spd 11 9 6 5 3 4 8 9 9 8 6 6 6 5 6 9 10 10 10 10 10 Clouds OV OV OV B2 B2 B1 B2 B1 B2 B2 OV OV OV OV OV OV OV OV OV OV OV PoP 12hr 90 40 60 80 90 QPF 12hr 0.21 0.09 0.14 0.29 0.58 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C D L C C S S S C D D D D D D D D L Tstms C C S S S Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 61 50 62 48 66 49 69 Temp 55 51 59 59 54 52 60 58 52 51 64 60 53 52 67 61 Dewpt 54 51 54 55 53 52 55 54 51 50 53 52 50 50 54 54 PWind dir NE NE NE NE N N N N Wind char GN GN GN GN LT GN LT GN Avg clouds OV OV OV B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC PoP 12hr 70 60 50 40 20 10 10 5 Rain shwrs L L L C C C C C S $$ MDZ017-202000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 69 77 64 73 Temp 72 79 82 83 78 73 72 70 71 75 76 75 69 68 67 65 67 71 72 71 66 Dewpt 67 66 67 69 70 70 70 69 69 68 68 68 66 66 66 65 66 67 67 65 63 RH 84 64 61 63 76 90 93 97 93 79 76 79 90 93 97100 97 87 84 81 90 Wind dir S S S S S W NW N N N NE NE NE E E E NE NE NE NE NE Wind spd 9 10 10 10 5 4 3 5 10 11 11 11 11 10 10 12 13 17 18 20 18 Wind gust 31 29 Clouds B2 B2 B1 B1 B2 B2 B2 OV B1 B2 B2 B2 B2 B2 OV OV B2 B2 B2 B2 OV PoP 12hr 30 40 20 60 70 QPF 12hr 0 0.07 0 0.26 0.46 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C C L L L L L L C Tstms C C S S S S S S S Heat index 85 87 Max heat 85 87 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 71 61 69 58 68 58 69 Temp 64 64 70 67 65 63 67 65 62 61 66 64 62 60 68 65 Dewpt 61 61 63 62 61 61 61 59 57 56 55 55 54 54 55 55 PWind dir NE NE NE NE N N N N Wind char BZ BZ BZ BZ BZ BZ GN GN Avg clouds OV OV B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC PoP 12hr 60 50 40 40 30 30 10 20 Rain shwrs C L C C C C C C C C C S S Tstms S S S S $$ WVZ502-202000- Petersburg WV 38.99N 79.15W Elev. 963 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 62 72 55 67 Temp 67 78 81 83 75 68 66 65 63 65 68 69 64 61 61 59 56 63 65 65 61 Dewpt 65 69 69 69 68 67 66 65 63 65 66 66 63 61 61 59 56 63 65 64 61 RH 93 74 67 63 79 97100100100100 93 90 97100100100100100100 97100 Wind dir E SE SE S E N N N N NE NE NE NE E E NE NE NE NE NE NE Wind spd 4 2 3 3 2 1 0 1 4 3 3 3 3 2 1 2 2 3 4 4 5 Clouds OV OV OV B2 B1 B2 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV OV PoP 12hr 60 70 90 90 100 QPF 12hr 0.17 0.06 0.29 0.24 0.53 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C S C S C L C C C L D D D D D D D D D Tstms S S C S S S S S S S S S S Obvis PF PF PF Heat index 84 87 Max heat 84 87 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 61 48 63 47 67 46 68 Temp 56 51 59 58 54 50 60 58 51 49 65 60 50 48 66 60 Dewpt 56 51 57 55 54 50 57 54 51 49 55 53 50 48 54 54 PWind dir NE NE NE NE N N NW N Wind char LT LT LT LT LT LT LT LT Avg clouds OV OV OV B2 OV B2 B2 B2 B2 B1 B1 SC SC SC SC SC PoP 12hr 90 70 70 50 20 20 10 10 Rain shwrs D D L L L L C C S S Tstms S S $$ MDZ014-202000- Annapolis MD 38.99N 76.49W Elev. 7 ft 800 AM EDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 66 74 64 70 Temp 72 78 82 82 78 71 71 68 67 73 74 73 68 64 64 64 64 68 70 69 65 Dewpt 66 66 69 70 71 71 69 65 64 65 64 63 62 64 64 63 62 63 63 61 59 RH 81 67 65 67 79100 93 90 90 76 71 71 81100100 97 93 84 78 76 81 Wind dir S S SW SW S N N N N NE NE NE NE E E NE NE NE NE NE NE Wind spd 10 13 12 10 5 0 4 9 10 12 12 12 10 10 10 12 13 17 18 18 14 Wind gust 24 29 27 Clouds OV B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 OV OV OV OV OV OV OV OV OV PoP 12hr 60 60 20 70 70 QPF 12hr 0.12 0.09 0 0.17 0.58 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S C C C S C C L L L L L L L Tstms S C C S S S S Heat index 85 86 Max heat 85 86 Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 60 68 57 69 56 69 56 71 Temp 61 61 68 66 61 59 68 65 59 57 68 65 59 58 70 66 Dewpt 59 57 59 59 58 58 60 57 54 53 54 54 53 53 55 55 PWind dir NE NE NE NE NE N N N Wind char BZ BZ BZ BZ GN GN GN GN Avg clouds OV OV B2 B2 OV B2 B2 B2 B2 B1 SC B1 B1 SC SC SC PoP 12hr 60 50 40 30 20 20 10 10 Rain shwrs L C C C C C C C S S S S Tstms S $$