Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
713 FOUS51 KLWX 181829 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 229 PM EDT Fri Sep 18 2026 VAZ054-182000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 86 65 80 68 84 Temp 83 77 73 70 67 66 73 78 79 75 71 69 69 70 77 82 83 78 Dewpt 69 68 63 61 59 57 59 61 62 64 65 66 66 67 67 68 69 70 RH 63 74 71 73 75 73 62 56 56 69 81 90 90 90 71 63 63 76 Wind dir N N N NE NE NE NE E E E SE SE SE S S S S SW Wind spd 10 9 9 9 10 9 9 8 8 9 9 8 8 9 11 12 11 8 Clouds B1 SC B1 B1 B1 B2 B1 B1 B1 B1 B2 B2 OV B1 B1 B1 B2 B2 PoP 12hr 10 0 10 10 40 QPF 12hr 0 0 0 0 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L Tstms S C Heat index 87 85 87 Max heat 87 89 85 87 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 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 76 65 68 60 64 59 65 Temp 72 68 74 74 67 65 66 65 61 60 62 62 59 59 64 62 Dewpt 70 66 65 64 63 61 62 59 57 56 58 58 57 56 58 58 PWind dir NW NE NE NE NE NE NE NE Wind char LT GN GN BZ BZ BZ BZ BZ Avg clouds B2 B2 B1 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 60 40 50 60 50 50 50 40 Rain shwrs L S S C C C C L C C C C C C C C Tstms C S S S S $$ MDZ013-182000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 61 79 66 83 Temp 83 76 70 66 63 63 72 77 78 72 67 66 67 68 75 81 82 76 Dewpt 68 67 63 59 57 56 60 61 62 65 66 66 66 67 69 70 71 71 RH 61 74 78 78 81 78 66 58 58 79 97100 97 97 82 69 69 85 Wind dir N N N NE NE NE NE E E SE SE SE SE S S S S SW Wind spd 10 8 8 9 8 8 10 8 9 9 9 8 6 8 11 12 11 6 Clouds SC SC SC SC SC SC B1 B1 B1 B2 B2 OV OV B1 B2 B2 B1 B2 PoP 12hr 10 0 5 20 50 QPF 12hr 0 0 0 0 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L Tstms S C Heat index 86 85 86 Max heat 88 88 85 86 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 75 60 68 56 65 56 66 Temp 69 66 73 71 62 61 65 63 57 56 63 61 56 57 65 62 Dewpt 69 66 66 64 62 60 62 60 56 56 59 59 56 56 60 59 PWind dir NW NE NE NE NE NE NE NE Wind char LT GN GN GN GN GN GN GN Avg clouds B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 40 50 50 40 50 50 40 Rain shwrs L C S C C C C C C C C C C C C C Tstms C S S S S $$ MDZ011-182000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 86 62 80 68 83 Temp 83 77 71 67 63 64 73 78 78 72 68 68 68 69 76 81 82 77 Dewpt 64 62 59 57 55 52 55 56 58 60 63 64 65 65 66 66 68 68 RH 53 60 66 70 75 65 53 47 50 66 84 87 90 87 71 60 63 74 Wind dir N N N N N NE NE E E SE SE SE SE S S S S SW Wind spd 10 8 9 9 9 8 9 8 9 8 9 8 8 8 11 12 11 6 Clouds SC SC SC SC SC SC B1 B1 B1 B2 B2 OV OV B2 B2 B2 B2 B2 PoP 12hr 10 0 5 20 50 QPF 12hr 0 0 0 0 0.08 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C L Tstms S C Heat index 84 83 85 Max heat 87 87 83 85 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 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 76 61 68 57 66 57 67 Temp 70 66 74 71 64 62 66 64 59 58 64 62 58 58 66 63 Dewpt 69 63 61 60 60 57 57 54 54 52 54 54 55 53 54 55 PWind dir NW NE NE NE NE NE NE NE Wind char LT GN GN BZ GN GN GN GN Avg clouds B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 40 50 50 40 50 50 40 Rain shwrs L C S C C C C C C C C C C C C C Tstms C S S S S $$ WVZ052-182000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 57 76 64 81 Temp 80 72 66 63 59 58 68 74 76 71 66 66 66 66 74 79 80 74 Dewpt 66 65 63 59 56 54 53 55 58 60 62 64 65 66 67 69 71 70 RH 62 79 90 87 90 86 59 51 54 68 87 93 97100 79 72 74 87 Wind dir N N N N N N NE E SE SE SE S S S S SW SW W Wind spd 10 5 5 5 6 5 6 6 9 5 5 6 6 9 12 11 9 4 Clouds SC SC B1 B1 B2 B2 B2 SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 0 5 30 80 QPF 12hr 0 0 0 0 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S D D L Tstms S S S Heat index 82 83 Max heat 83 85 85 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 70 56 62 51 58 51 62 Temp 67 62 68 68 61 59 61 60 55 53 58 56 53 53 61 57 Dewpt 67 62 60 60 60 58 57 57 55 52 53 54 53 53 54 55 PWind dir N NE NE NE NE NE NE N Wind char LT GN LT GN GN GN LT LT Avg clouds B2 B2 B2 B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 40 70 80 70 60 60 40 Rain shwrs L S S C C L L D L L L L L C C C Tstms S S S S S $$ VAZ506-182000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 61 79 66 83 Temp 81 74 69 66 63 62 71 77 77 72 68 67 67 68 76 81 82 77 Dewpt 72 70 66 62 59 58 61 64 65 66 67 67 66 67 70 72 73 72 RH 74 87 90 87 87 87 71 64 67 81 97100 97 97 82 74 74 85 Wind dir N N N N N N NE E SE SE SE SE S S S S SW SW Wind spd 10 6 6 6 6 5 8 6 8 5 8 6 6 8 12 12 11 4 Clouds FW SC B1 B1 B2 B1 B1 SC B1 B1 B2 OV B1 B1 B2 B1 B2 B2 PoP 12hr 10 0 5 10 50 QPF 12hr 0 0 0 0 0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L Tstms S C Heat index 85 85 87 Max heat 87 88 85 89 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 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 74 61 66 56 62 55 64 Temp 70 65 72 70 64 62 64 63 58 56 61 60 56 56 63 60 Dewpt 70 65 68 66 63 61 64 62 57 55 61 60 56 56 61 60 PWind dir NW NE NE NE NE NE NE N Wind char LT GN GN GN GN GN GN GN Avg clouds B2 B1 B1 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 60 40 60 60 60 50 50 40 Rain shwrs L S C C L L L C L C C C C C C Tstms C S S S S $$ VAZ037-182000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 63 76 65 83 Temp 83 74 71 69 65 63 69 74 76 72 68 67 67 66 75 81 82 76 Dewpt 72 73 71 68 64 62 61 63 64 66 67 67 67 66 68 69 70 71 RH 70 97100 97 97 97 76 69 66 81 97100100100 79 67 67 85 Wind dir NE NE NE NE NE NE NE NE NE E NE S S S S SW SW SW Wind spd 8 5 5 5 6 5 8 6 6 3 2 2 2 4 9 10 8 4 Clouds B1 B1 B2 OV B2 B2 B2 B2 B2 B2 B2 OV OV SC B1 SC SC B1 PoP 12hr 30 20 10 10 30 QPF 12hr 0.13 0.01 0 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S C C C Tstms S S S S Heat index 88 84 86 Max heat 90 91 84 87 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 77 62 66 56 60 55 64 Temp 70 66 75 71 66 63 65 64 59 56 60 58 57 55 63 59 Dewpt 70 66 67 66 65 62 65 63 59 56 59 58 57 55 59 59 PWind dir NW NE NE NE NE NE N NE Wind char LT LT GN GN GN GN GN GN Avg clouds B1 B2 B1 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 40 50 70 70 70 60 50 40 Rain shwrs C S C L L L L L L L L C C C C Tstms S S S S S S S $$ MDZ003-182000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 77 65 80 Temp 79 71 65 61 58 58 68 75 76 71 66 66 66 66 72 78 79 74 Dewpt 66 65 61 58 54 53 55 57 59 62 62 64 65 66 68 71 72 71 RH 64 81 87 90 86 83 63 54 56 73 87 93 97100 87 79 79 90 Wind dir N N NE N N NE NE E SE SE SE SE S S S S SW W Wind spd 10 5 6 6 6 5 8 6 8 5 6 8 9 10 13 12 11 3 Clouds B1 SC SC FW SC SC SC B1 B2 B2 B2 B2 OV B2 B2 OV OV B2 PoP 12hr 20 0 5 40 80 QPF 12hr 0 0 0 0 0.21 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C D D L Tstms S C S Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 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 62 70 57 62 53 59 52 62 Temp 66 62 68 67 61 58 61 60 54 53 58 56 53 53 61 58 Dewpt 66 61 62 61 59 58 59 57 54 52 55 56 53 53 56 57 PWind dir N NE NE NE NE NE NE NE Wind char LT GN GN GN GN GN GN GN Avg clouds B2 B2 B1 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 60 40 60 80 60 50 50 40 Rain shwrs L S S C C L L D L L C C C C C C Tstms S S S S S $$ MDZ017-182000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 68 79 70 82 Temp 82 77 75 72 69 70 76 79 77 71 70 70 70 72 79 82 80 76 Dewpt 71 71 69 67 64 64 65 65 65 67 66 67 67 68 69 69 70 71 RH 69 82 82 84 84 81 69 62 67 87 87 90 90 87 72 65 72 85 Wind dir N N NE NE NE NE NE E E E E SE SE S S S S S Wind spd 10 9 6 9 11 11 11 8 10 11 11 10 10 9 12 12 12 11 Clouds FW SC SC B1 B2 B1 SC SC B1 B2 B1 SC SC FW SC SC SC B1 PoP 12hr 10 10 10 10 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C Tstms S Heat index 86 85 83 Max heat 87 87 85 85 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 78 66 72 63 69 62 68 Temp 72 72 76 73 70 68 71 68 65 64 68 66 65 64 68 66 Dewpt 72 70 70 68 67 65 66 64 62 62 63 62 62 62 62 61 PWind dir W NE NE NE NE NE NE NE Wind char GN GN GN BZ BZ BZ BZ BZ Avg clouds B1 B1 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 50 50 50 50 50 40 40 Rain shwrs C S C C C C C C C C C C C C C C Tstms S S S S S S S $$ WVZ502-182000- Petersburg WV 38.99N 79.15W Elev. 963 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 59 79 64 84 Temp 83 75 68 65 61 59 67 76 79 72 66 64 64 64 75 82 83 75 Dewpt 71 69 68 65 61 59 63 65 65 65 64 63 64 64 69 72 72 70 RH 67 82100100100100 87 69 62 79 93 97100100 82 72 70 84 Wind dir N N N NE NE NE E SE SE SE S S S S S SW SW SW Wind spd 8 4 2 3 3 3 4 5 6 3 4 5 5 5 8 8 5 3 Clouds B1 B2 B2 B2 OV B2 B2 B1 B1 B2 B1 SC SC SC B2 B2 B2 B2 PoP 12hr 30 20 10 10 70 QPF 12hr 0.04 0.01 0 0 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S C C L L L Tstms S C S S Obvis F F F Heat index 88 87 88 Max heat 84 88 87 88 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 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 62 73 58 67 53 61 52 64 Temp 67 62 71 68 62 59 64 62 56 53 59 58 53 52 62 58 Dewpt 67 62 66 64 61 59 64 60 56 53 58 57 53 52 60 58 PWind dir NW NE E E NE NE NE NE Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 OV OV OV OV OV OV B2 B2 B2 B2 B2 B2 PoP 12hr 60 70 80 90 80 60 60 50 Rain shwrs L C L L L D D D D L L C L C C C Tstms S S S S S $$ MDZ014-182000- Annapolis MD 38.99N 76.49W Elev. 7 ft 229 PM EDT Fri Sep 18 2026 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 64 77 67 81 Temp 83 78 73 69 66 66 73 77 77 73 67 68 68 69 78 81 81 77 Dewpt 67 68 65 62 59 58 60 61 61 64 66 66 66 66 67 68 69 70 RH 59 71 76 78 78 75 64 58 58 73 97 93 93 90 69 65 67 79 Wind dir N N N NE NE NE NE E E E SE SE SE S S S S S Wind spd 10 8 11 11 12 11 10 8 9 11 10 9 10 9 13 14 13 9 Clouds SC SC B1 SC B1 B1 B1 B1 SC B2 B1 B2 OV B1 B1 B2 B1 B2 PoP 12hr 0 0 10 20 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L Tstms S C Heat index 86 84 84 Max heat 88 88 84 84 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 75 63 71 60 68 60 69 Temp 70 68 75 72 65 64 70 66 61 61 68 65 60 61 68 66 Dewpt 70 66 65 65 63 62 63 60 58 58 61 60 58 59 61 59 PWind dir NW NE NE NE NE NE NE NE Wind char GN GN GN BZ BZ BZ GN GN Avg clouds B2 B2 B2 B2 OV OV B2 OV OV B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 50 50 50 40 50 40 40 Rain shwrs L C S C C C C C C C C C C C C C Tstms C S S S S $$