Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
603 FOUS51 KLWX 152101 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 501 PM EDT Tue Sep 15 2026 VAZ054-160800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 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 89 73 Temp 74 67 64 63 64 77 85 86 80 73 71 69 70 80 87 87 81 77 75 74 74 Dewpt 54 56 58 59 59 60 60 61 61 62 63 62 62 62 64 65 66 67 68 69 69 RH 50 68 81 87 84 56 43 43 52 68 76 78 76 54 46 48 60 71 79 84 84 Wind dir SE S S S S S S S S S S S S S S SW S SW SW W NW Wind spd 9 8 6 4 5 8 6 9 9 8 8 8 6 8 9 10 10 9 8 9 11 Clouds FW CL FW CL CL FW FW FW FW FW FW SC SC FW SC SC B1 B1 B1 B1 FW PoP 12hr 0 0 5 10 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms S S Heat index 85 86 81 81 88 89 83 Max heat 80 85 86 88 89 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 86 66 81 68 85 70 83 68 79 Temp 84 81 71 67 79 76 70 70 82 79 73 71 81 77 71 70 77 74 Dewpt 66 60 58 57 61 61 64 65 67 67 67 67 67 66 66 66 66 65 PWind dir N NE E SE S E E E E Wind char GN GN GN GN GN GN GN GN BZ Avg clouds SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 PoP 12hr 10 5 5 10 40 30 40 50 50 Rain shwrs C C C C C C C Tstms S S $$ MDZ013-160800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 60 85 66 88 71 Temp 69 65 63 61 62 76 83 83 75 71 68 67 68 79 86 86 79 75 73 72 72 Dewpt 55 57 59 59 60 61 62 64 64 63 63 63 63 65 66 68 69 68 69 69 69 RH 61 75 87 93 93 60 49 53 69 76 84 87 84 62 51 55 72 79 87 90 90 Wind dir SE SE S SW SW S S S S S S SW S S S S S SW SW W N Wind spd 3 3 2 2 2 4 5 6 4 3 2 2 3 4 6 8 4 3 3 3 5 Clouds FW CL CL CL FW FW FW FW FW SC SC SC SC SC SC SC B1 B1 B1 SC SC PoP 12hr 0 5 10 10 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms S Heat index 84 84 88 89 Max heat 84 86 88 90 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 63 79 65 84 67 81 65 78 Temp 82 79 66 64 76 73 67 67 81 77 70 69 79 75 68 67 75 72 Dewpt 66 62 57 57 63 63 64 66 69 69 67 68 69 68 66 66 68 67 PWind dir N NE E SE S E E E E Wind char GN LT LT LT GN LT GN LT GN Avg clouds SC SC SC SC B1 B1 B1 B1 B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 PoP 12hr 10 5 5 20 40 40 40 50 50 Rain shwrs S S C C S S C C C C C Tstms S S $$ MDZ011-160800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 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 86 68 89 73 Temp 72 66 64 62 65 77 84 85 79 72 70 69 70 80 87 87 80 77 75 73 73 Dewpt 53 56 58 58 58 59 60 62 62 62 62 63 62 62 64 66 67 67 69 69 68 RH 51 70 81 87 78 54 44 46 56 71 76 81 76 54 46 50 65 71 82 87 84 Wind dir SE SE S SW SW S S SE S S S S S S S S S SW W W N Wind spd 3 3 2 1 1 4 5 8 4 2 1 1 2 4 6 8 4 2 2 2 5 Clouds CL CL CL FW FW FW CL FW SC SC SC SC SC SC SC SC B1 B1 B1 SC SC PoP 12hr 0 5 10 10 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms S Heat index 84 86 81 88 89 82 Max heat 84 86 88 90 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 85 64 80 68 84 69 82 67 79 Temp 83 79 68 66 78 74 68 70 81 78 71 70 80 76 69 69 77 73 Dewpt 63 57 55 54 57 58 63 64 65 66 66 65 65 64 65 64 63 62 PWind dir N NE E SE S E E E E Wind char GN LT LT LT GN LT GN LT GN Avg clouds B1 SC SC SC B1 B1 B1 B1 B2 B1 B1 B1 B2 B1 B2 B2 B2 B2 PoP 12hr 10 5 5 20 40 40 40 50 50 Rain shwrs S C C C S S C C C C C Tstms S S $$ WVZ052-160800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 55 86 64 88 68 Temp 71 63 59 57 58 76 84 86 79 71 68 66 66 80 86 86 77 73 72 70 70 Dewpt 54 54 54 54 56 59 62 63 63 63 63 63 64 67 69 71 71 70 70 69 69 RH 55 72 83 90 93 56 48 46 58 76 84 90 93 65 57 61 82 90 93 97 97 Wind dir SE S S N N N S S S N N N N N SW SW W N N NW NW Wind spd 4 5 3 0 0 0 4 5 3 0 0 0 0 0 5 5 2 0 0 3 6 Clouds CL CL FW FW FW FW FW FW FW SC FW FW B1 SC B2 B2 B1 B1 B1 B1 SC PoP 12hr 0 10 10 60 30 QPF 12hr 0 0 0 0.08 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L C C S S Tstms C C S Heat index 85 87 82 90 91 Max heat 85 87 90 92 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 58 78 63 81 63 78 62 75 Temp 81 75 63 60 76 73 66 65 80 74 67 66 77 72 66 64 74 69 Dewpt 66 59 55 54 58 60 62 64 67 67 66 65 66 66 64 64 65 63 PWind dir N NE SE S S E E E NE Wind char GN LT LT GN GN LT LT LT GN Avg clouds B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 10 0 5 30 50 40 50 50 50 Rain shwrs C C C C C C C C C C C Tstms S S S $$ VAZ506-160800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 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 58 87 65 90 70 Temp 71 64 61 59 61 77 85 85 77 72 68 66 67 80 88 88 79 75 73 72 72 Dewpt 55 56 57 57 58 61 63 64 64 64 63 62 63 65 68 69 70 70 70 69 69 RH 57 75 87 93 90 58 48 50 64 76 84 87 87 60 52 54 74 84 90 90 90 Wind dir SE S S S S S S S S S S S S S S SW SW SW W NW NW Wind spd 5 4 4 3 3 5 5 5 5 4 3 3 3 3 5 5 3 2 2 3 5 Clouds CL CL CL FW FW FW FW FW FW SC SC SC FW SC SC SC B1 B2 B1 B1 SC PoP 12hr 0 5 5 20 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C Tstms S S S Heat index 86 86 82 92 92 Max heat 86 88 92 94 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 85 62 81 65 85 66 82 64 78 Temp 83 78 66 63 79 74 67 67 82 78 70 68 80 76 68 66 76 72 Dewpt 68 63 58 56 64 65 64 66 71 70 68 67 70 69 67 66 70 68 PWind dir N NE SE SE S E E E E Wind char GN LT LT GN GN LT LT LT GN Avg clouds SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 PoP 12hr 10 5 5 10 40 30 40 50 50 Rain shwrs S C C S C C C C C Tstms S S $$ VAZ037-160800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 57 85 63 89 69 Temp 71 63 60 58 59 75 84 84 74 70 67 65 65 80 88 86 77 73 72 71 71 Dewpt 57 57 56 56 57 60 62 63 64 64 63 62 62 66 67 69 70 69 69 68 69 RH 61 81 87 93 93 60 48 49 71 81 87 90 90 62 50 57 79 87 90 90 93 Wind dir N N N N N S SE SE N N N N N S S S N N N N N Wind spd 0 0 0 0 0 4 4 4 0 0 0 0 0 2 5 4 0 0 0 0 3 Clouds FW CL CL FW CL FW FW FW CL CL CL CL FW FW SC SC SC SC SC SC FW PoP 12hr 0 0 0 20 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S Heat index 85 85 82 91 90 Max heat 85 86 91 92 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 63 79 64 84 66 82 65 76 Temp 84 78 69 64 77 73 67 66 82 77 70 67 81 75 68 66 75 71 Dewpt 70 67 61 58 62 64 65 65 68 69 68 67 68 69 68 66 68 67 PWind dir NE NE E S SW S E NE NE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B2 B1 B2 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B1 B2 B2 B2 PoP 12hr 60 10 10 10 30 30 50 50 60 Rain shwrs L C C C C C C L Tstms C S S $$ MDZ003-160800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 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 56 86 65 87 69 Temp 70 62 60 58 60 74 84 86 78 72 69 67 67 78 85 85 77 73 72 71 70 Dewpt 53 53 54 55 56 60 63 65 65 64 64 63 64 68 70 72 72 70 70 68 68 RH 55 72 81 90 87 62 49 50 64 76 84 87 90 71 61 65 85 90 93 90 93 Wind dir SE S S S S S S S S SE SE SE S S SW SW SW W W NW N Wind spd 4 5 4 3 2 3 4 4 3 2 2 1 2 2 4 5 3 2 2 3 6 Clouds CL CL FW FW CL FW SC FW SC SC FW SC B1 B1 B2 B2 B2 B1 B1 B1 SC PoP 12hr 0 10 20 60 30 QPF 12hr 0 0 0 0.07 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S L L C C Tstms C C S Heat index 85 88 90 91 Max heat 85 88 90 92 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 57 78 63 80 63 78 62 75 Temp 80 75 62 59 76 73 66 65 78 74 67 65 76 72 66 64 73 69 Dewpt 64 60 54 53 60 61 62 64 69 68 66 65 68 67 64 64 66 64 PWind dir N NE SE S S E SE E NE Wind char GN LT LT GN GN LT LT LT GN Avg clouds B1 SC SC SC SC B1 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 10 0 5 40 60 50 50 60 50 Rain shwrs S C C L C C C C L C C C Tstms S S $$ MDZ017-160800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 80 67 85 71 Temp 71 68 67 66 68 77 80 79 73 71 70 68 70 79 84 83 77 75 74 72 73 Dewpt 58 60 61 61 62 62 62 62 63 63 64 64 64 65 65 67 66 67 67 66 68 RH 63 76 81 84 81 60 54 56 71 76 81 87 81 62 53 59 69 76 79 81 84 Wind dir SE SE S S W SE SE SE S S S SW SW S S S S S SW SW W Wind spd 4 5 4 3 2 4 6 8 6 5 4 4 4 6 9 10 8 6 5 5 5 Clouds FW FW FW FW FW FW FW CL CL FW SC FW FW FW FW FW FW SC B1 SC FW PoP 12hr 0 0 0 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 81 86 86 Max heat 81 81 86 87 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 67 79 69 84 71 83 69 80 Temp 83 78 72 69 78 74 71 72 82 77 73 72 81 76 72 71 79 73 Dewpt 70 66 64 63 64 65 66 67 69 70 69 70 70 70 69 69 69 68 PWind dir N NE E SE S SE E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC B1 SC SC SC B1 SC SC SC B1 B1 B1 B1 B2 B2 B1 PoP 12hr 10 10 5 5 20 20 30 40 50 Rain shwrs S S C C C C C Tstms S S $$ WVZ502-160800- Petersburg WV 38.99N 79.15W Elev. 963 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 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 56 91 65 90 67 Temp 72 64 60 58 59 80 89 91 80 72 69 67 67 82 88 88 77 73 70 69 69 Dewpt 59 58 57 55 57 64 66 67 68 66 65 64 65 70 71 71 71 70 68 67 68 RH 64 81 90 90 93 58 47 45 67 81 87 90 93 67 57 57 82 90 93 93 97 Wind dir E S SE S SE N NE SE S SW SW SW SW W W W W W W N N Wind spd 2 4 3 1 1 0 1 2 1 2 1 1 2 1 3 3 2 2 1 0 0 Clouds FW FW FW FW SC FW FW FW SC SC FW SC B1 B1 B1 B1 B1 B2 B1 B2 B1 PoP 12hr 0 5 30 40 30 QPF 12hr 0 0 0 0.06 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C C Tstms S C C S Obvis PF PF Heat index 82 92 94 83 86 94 94 Max heat 82 92 94 94 95 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 58 82 63 86 63 82 61 77 Temp 82 76 63 59 79 74 66 65 83 77 68 65 79 74 66 63 75 70 Dewpt 69 65 60 57 65 64 63 64 71 69 66 65 70 68 65 63 68 65 PWind dir N NE SE S SW SW SE SE E Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 SC B1 B2 B1 B1 B1 B2 B2 B2 B2 B2 PoP 12hr 50 10 20 20 60 40 60 60 60 Rain shwrs C C S S S C L C S C L L C C L Tstms S C S S S $$ MDZ014-160800- Annapolis MD 38.99N 76.49W Elev. 7 ft 501 PM EDT Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 82 67 85 72 Temp 73 67 65 64 65 77 82 81 76 72 70 68 69 80 85 85 79 76 73 72 73 Dewpt 57 60 61 61 60 61 63 64 64 65 64 64 64 64 66 67 68 68 68 69 69 RH 57 78 87 90 84 58 53 56 66 79 81 87 84 58 53 55 69 76 84 90 87 Wind dir SE SE S SW SW S S S S S S SW S S S S S S SW W NW Wind spd 3 6 5 3 3 6 10 10 8 5 3 4 5 8 11 12 9 5 4 4 6 Clouds FW FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC B1 B1 B1 SC PoP 12hr 0 0 5 5 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S Tstms S Heat index 83 83 82 87 88 Max heat 83 83 87 88 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 66 79 68 84 69 82 68 79 Temp 83 80 68 67 78 75 68 69 83 78 72 70 81 76 70 69 78 74 Dewpt 66 62 61 58 61 62 65 65 67 68 69 67 67 67 68 66 66 65 PWind dir N NE E SE S E E E E Wind char GN GN GN LT GN LT GN GN GN Avg clouds SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 PoP 12hr 10 5 5 10 30 40 30 40 50 Rain shwrs S C C S C C C C C Tstms S S $$