Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
938 FOUS51 KLWX 150629 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 229 AM EDT Tue Sep 15 2026 VAZ054-152000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 61 85 66 88 Temp 59 60 72 78 80 73 66 63 62 63 76 83 84 78 71 68 66 68 79 85 86 80 Dewpt 49 50 52 52 53 54 56 58 59 59 59 60 60 60 59 61 61 61 61 62 63 62 RH 69 69 49 40 39 51 70 84 90 87 56 46 44 54 66 78 84 78 54 46 46 54 Wind dir N NE E SE SE SE S S S S S S S S S S S S S S S S Wind spd 5 6 6 6 9 9 8 5 3 4 8 6 9 9 8 6 6 6 8 9 11 11 Clouds FW FW FW FW CL SC FW FW FW FW CL SC FW FW CL FW FW FW FW FW SC SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 80 83 84 86 87 81 Max heat 80 83 84 86 87 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 69 82 70 87 70 82 Temp 73 72 86 81 72 69 79 77 71 71 84 81 73 70 79 75 Dewpt 63 64 68 65 62 61 65 65 67 67 69 68 67 66 66 65 PWind dir SW N NE E S SW SW NE Wind char GN GN GN GN GN GN GN GN Avg clouds SC SC SC B1 SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 10 40 10 10 5 30 40 50 Rain shwrs C C C S C Tstms S S S S $$ MDZ013-152000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 60 83 64 86 Temp 57 58 69 74 76 70 64 61 60 62 75 81 82 75 68 65 64 66 78 84 84 77 Dewpt 48 49 52 51 52 55 57 58 59 61 63 63 64 64 62 61 61 62 65 66 67 66 RH 72 72 55 44 43 59 78 90 96 97 66 54 55 69 81 87 90 87 64 55 57 69 Wind dir N NE E E SE SE SE S SW SW S S S S S S SW S S S S S Wind spd 3 4 5 5 5 3 3 2 1 2 4 5 6 4 2 2 2 2 5 8 9 5 Clouds FW FW FW FW CL FW FW SC FW FW FW SC FW FW FW FW FW FW FW FW SC SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 82 83 86 87 Max heat 82 83 86 88 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 86 65 80 67 86 67 80 Temp 71 71 85 79 68 66 77 74 68 69 84 79 69 68 77 73 Dewpt 64 66 70 66 61 61 66 67 67 68 70 70 67 66 68 66 PWind dir SW N NE E S SW E NE Wind char LT LT LT GN LT GN LT GN Avg clouds SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 10 20 5 10 10 40 40 50 Rain shwrs S C C S C C Tstms S S S $$ MDZ011-152000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 78 61 84 66 87 Temp 59 60 71 76 76 69 65 63 61 63 76 82 82 75 70 67 66 68 79 85 85 78 Dewpt 47 48 51 50 50 53 56 57 58 58 58 58 61 59 59 60 60 59 61 61 64 62 RH 64 64 49 40 40 57 73 81 90 84 54 44 49 58 68 78 81 73 54 45 50 58 Wind dir N NE E SE SE SE SE S N SW S S S S S S S S S S S S Wind spd 3 3 4 5 5 2 3 1 0 1 4 6 8 3 2 1 1 2 4 8 9 5 Clouds FW FW FW CL CL FW FW FW FW FW FW SC FW FW FW FW FW FW FW FW SC SC 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 83 85 86 Max heat 82 83 85 86 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 66 81 70 87 69 81 Temp 73 73 86 79 68 67 78 75 70 71 84 79 71 70 79 73 Dewpt 63 65 66 62 60 59 62 62 66 67 67 67 66 65 64 62 PWind dir SW N NE E S SW NE NE Wind char LT LT LT GN LT GN LT GN Avg clouds SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 PoP 12hr 10 20 5 10 10 40 40 50 Rain shwrs S C C S C C Tstms S S S $$ WVZ052-152000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 54 84 62 88 Temp 51 52 66 75 77 70 61 58 56 57 74 82 84 77 68 64 62 64 78 86 86 77 Dewpt 47 48 49 51 52 53 54 53 54 55 58 60 61 62 62 61 61 62 65 66 68 68 RH 86 86 54 43 42 55 78 83 93 93 57 47 46 60 81 90 97 93 64 51 55 74 Wind dir N N SE S S SE S S N N S S S SE N N N N S S S SW Wind spd 0 0 5 8 8 4 5 2 0 0 1 4 5 3 0 0 0 0 2 5 5 3 Clouds FW SC SC FW FW CL FW SC FW FW SC FW FW FW FW FW FW FW SC B1 B1 SC PoP 12hr 0 0 0 0 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S Tstms S S Heat index 82 84 88 89 Max heat 82 84 88 90 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 83 60 78 64 85 63 76 Temp 70 69 82 76 65 63 76 73 68 67 83 77 68 65 74 70 Dewpt 67 68 68 65 59 58 62 65 65 66 68 68 66 64 65 63 PWind dir W N NE SE S SW NE N Wind char LT LT LT LT GN GN LT GN Avg clouds SC SC B1 B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 PoP 12hr 20 40 5 10 10 50 40 60 Rain shwrs S C C C S C L Tstms S S S $$ VAZ506-152000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 57 85 62 88 Temp 53 54 70 77 78 70 63 60 58 59 76 83 83 75 69 64 63 64 79 86 86 78 Dewpt 48 49 51 52 53 55 55 57 58 59 62 64 65 64 63 62 61 61 65 67 68 67 RH 83 83 51 42 42 59 75 90100100 62 53 55 69 81 93 93 90 62 53 55 69 Wind dir N N SE SE S SE S S S S S S S S S S S S S S S S Wind spd 2 2 3 4 4 5 4 3 2 3 5 5 5 4 3 3 3 3 5 6 6 5 Clouds FW FW FW FW FW FW FW FW FW FW FW SC CL FW FW FW FW FW FW FW FW SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 84 85 89 89 Max heat 84 87 89 91 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 86 64 81 66 87 65 80 Temp 71 70 85 78 67 65 79 75 69 68 84 78 69 66 77 72 Dewpt 64 67 72 68 63 61 68 68 67 68 72 71 68 66 70 68 PWind dir SW N NE SE S SW W NE Wind char LT LT LT LT LT GN LT GN Avg clouds SC SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 20 40 10 10 10 40 40 50 Rain shwrs S C C C S C Tstms S S S S $$ VAZ037-152000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 56 84 61 88 Temp 55 55 68 75 77 68 62 59 57 58 74 82 82 73 68 65 63 62 79 86 86 76 Dewpt 48 50 53 53 55 57 56 56 57 57 60 61 62 63 63 62 61 61 63 63 65 65 RH 77 83 59 46 47 68 81 90100 96 62 49 51 71 84 90 93 97 58 46 50 69 Wind dir N NE E SE SE N N N N N S S S N N N N N S S S S Wind spd 3 4 3 4 4 0 0 0 0 0 4 4 4 0 0 0 0 0 3 5 5 1 Clouds FW SC SC FW FW FW FW FW FW FW FW FW FW CL FW FW FW FW CL FW FW FW PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 83 83 87 88 Max heat 83 85 87 88 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 87 65 79 66 87 66 80 Temp 70 69 86 77 69 65 77 74 69 68 84 77 70 66 78 72 Dewpt 64 65 70 70 66 63 66 68 68 68 69 69 68 66 67 67 PWind dir S NE NE E S SW W NE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW SC B2 B1 B1 B1 B1 B1 B1 SC B1 B1 SC SC B2 PoP 12hr 5 60 40 10 10 30 30 60 Rain shwrs L C C C S L Tstms C S S S $$ MDZ003-152000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 56 84 63 87 Temp 50 52 66 75 77 70 61 59 57 58 73 82 83 76 69 65 63 65 77 85 85 77 Dewpt 45 47 49 51 52 53 53 53 55 57 60 63 65 65 63 62 61 62 66 68 70 69 RH 83 83 54 43 42 55 75 80 93 96 64 53 55 69 81 90 93 90 69 57 61 76 Wind dir N NE S S S SE S S S S S S S SE SE SE SE S S SW SW SW Wind spd 2 1 3 5 6 4 5 4 3 2 3 4 5 3 2 2 2 2 3 5 5 3 Clouds FW FW FW FW FW FW CL FW FW SC SC FW SC FW FW FW SC SC SC B1 B1 B1 PoP 12hr 0 0 0 0 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C Tstms S S Heat index 83 85 88 90 Max heat 83 85 88 91 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 83 60 79 65 84 63 77 Temp 70 70 82 75 63 62 76 73 67 67 81 76 67 64 74 69 Dewpt 67 68 69 65 59 58 64 65 66 67 70 69 65 64 66 64 PWind dir W N NE SE S SW NE NE Wind char LT LT LT LT GN GN LT GN Avg clouds B1 SC B1 SC SC B1 B1 B1 B1 B2 B1 B1 B1 B2 B2 B1 PoP 12hr 30 20 5 10 20 50 40 50 Rain shwrs C S S C C C C C Tstms S S S S $$ MDZ017-152000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 65 80 66 83 Temp 64 64 72 75 76 71 68 67 65 67 76 78 78 72 70 68 66 69 78 81 81 75 Dewpt 54 56 56 55 56 58 60 60 60 62 62 61 61 62 63 64 63 63 64 63 65 65 RH 70 75 57 50 50 63 76 78 84 84 62 56 56 71 78 87 90 81 62 54 58 71 Wind dir NE NE E E SE SE SE S S SW SE SE SE S S S SW SW S S S S Wind spd 8 8 6 4 3 3 6 4 2 2 3 5 6 4 4 4 4 3 4 8 10 8 Clouds FW FW CL FW FW FW FW SC FW FW FW FW FW FW CL FW CL CL CL CL CL FW PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 82 83 Max heat 82 83 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 86 69 80 70 85 71 81 Temp 71 72 85 79 73 72 79 76 73 73 83 79 73 72 79 75 Dewpt 66 65 70 70 67 66 67 68 69 70 71 71 70 69 70 68 PWind dir SW N NE E S S SW NE Wind char LT LT LT GN GN GN GN GN Avg clouds FW SC FW SC SC B1 SC SC SC B1 SC B1 B1 B1 B1 B1 PoP 12hr 5 20 20 5 5 30 40 50 Rain shwrs S S C C C C C Tstms S S $$ WVZ502-152000- Petersburg WV 38.99N 79.15W Elev. 963 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 56 90 63 90 Temp 50 50 66 79 82 72 63 59 58 58 78 88 89 79 70 66 64 65 82 88 88 77 Dewpt 47 49 54 57 59 59 57 56 55 56 64 66 67 67 65 63 61 62 69 71 72 71 RH 89 96 65 47 46 64 81 90 90 93 62 48 48 67 84 90 90 90 65 57 59 82 Wind dir N S SE SE SE S S S S S N E SE S S SW SW SW N W W W Wind spd 0 1 3 3 4 2 4 2 1 1 0 1 2 1 2 1 1 1 0 2 2 2 Clouds FW SC SC FW FW FW FW FW FW FW SC SC FW FW FW FW SC SC SC B1 B1 B1 PoP 12hr 0 0 0 0 40 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C Tstms C C Obvis PF PF PF PF Heat index 82 90 92 85 94 95 Max heat 82 90 92 94 96 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 85 61 82 64 87 63 79 Temp 69 68 82 75 65 61 79 74 67 66 84 76 67 63 76 70 Dewpt 67 67 73 69 64 60 68 67 65 65 70 69 65 63 68 64 PWind dir W N NE SE S SW SW N Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B1 B1 B1 B1 B1 SC SC B1 B1 B1 B1 B2 PoP 12hr 10 70 20 30 10 40 40 70 Rain shwrs C L S C C C C C L Tstms S C S S S $$ MDZ014-152000- Annapolis MD 38.99N 76.49W Elev. 7 ft 229 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 76 62 80 66 83 Temp 63 63 72 76 76 72 66 65 63 64 76 79 79 75 70 67 66 68 79 83 83 78 Dewpt 51 53 54 53 54 57 60 60 60 60 61 61 61 61 64 63 62 61 63 64 65 65 RH 65 70 53 45 46 59 81 84 90 87 60 54 54 62 81 87 87 78 58 53 55 64 Wind dir NE NE E SE SE SE SE S N N S S S S S S SW S S S S S Wind spd 6 6 6 4 4 2 6 4 0 0 5 9 9 6 4 3 3 4 8 11 11 9 Clouds FW FW FW FW CL SC FW FW SC FW FW SC FW SC FW FW FW FW FW FW FW SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 84 85 Max heat 81 84 85 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 84 66 80 68 86 68 81 Temp 71 72 84 79 69 68 79 75 70 71 84 80 71 69 79 74 Dewpt 65 65 68 68 64 63 67 67 67 68 71 71 68 67 69 67 PWind dir SW N NE E S S SW NE Wind char LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 PoP 12hr 10 20 5 5 10 40 40 50 Rain shwrs S C C S C C Tstms S S S $$