Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
711 FOUS51 KLWX 211200 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 800 AM EDT Fri Aug 21 2026 VAZ054-212000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 70 80 70 85 Temp 67 74 80 82 77 73 72 71 72 74 76 79 75 72 71 70 72 79 82 83 78 Dewpt 62 63 63 63 63 64 66 68 68 69 70 69 68 69 69 69 68 68 66 64 62 RH 84 69 56 53 62 73 81 90 87 84 82 72 79 90 93 97 87 69 58 53 58 Wind dir N N NE E SE E E E E E E NE NE E S SW W W W W NW Wind spd 9 6 5 6 6 5 5 6 8 9 8 9 8 5 3 4 6 10 11 11 10 Clouds SC SC SC B1 SC B2 B2 B2 B2 B2 B2 B2 OV B1 B1 SC SC SC SC SC FW PoP 12hr 0 60 90 40 20 QPF 12hr 0 0.18 0.86 0.10 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D D L C S S Tstms S S S S C C S S Heat index 81 83 84 84 Max heat 81 84 84 86 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 84 66 82 69 84 72 83 Temp 70 69 80 76 68 67 79 76 69 70 81 77 73 73 81 77 Dewpt 60 60 58 58 58 59 59 60 62 64 68 68 69 70 71 69 PWind dir NW W NW W S S S S Wind char GN GN LT LT LT GN GN GN Avg clouds FW CL FW FW FW FW FW SC SC SC FW B1 B1 B1 B1 B2 PoP 12hr 0 0 0 0 5 30 50 60 Rain shwrs C C C C L Tstms S S S $$ MDZ013-212000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 68 78 67 84 Temp 65 73 79 79 74 72 70 69 70 73 76 76 72 70 69 68 69 79 83 80 74 Dewpt 64 66 66 66 67 67 68 68 70 72 72 72 71 70 69 68 69 71 69 68 66 RH 97 79 64 64 79 84 93 97100 97 87 87 97100100100100 77 63 67 76 Wind dir N NE NE E SE E E E E E E E NE E E SW W W W W W Wind spd 4 4 3 4 2 2 2 2 3 5 6 6 3 2 1 1 2 5 8 8 4 Clouds SC FW SC SC SC B1 B2 OV B2 OV OV B2 OV B1 B1 B1 SC SC SC SC FW PoP 12hr 0 50 90 40 20 QPF 12hr 0 0.19 0.85 0.23 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D L C C S S Tstms S S S S C C S S Heat index 87 83 Max heat 83 87 87 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 82 64 81 67 83 70 83 Temp 67 67 80 74 66 65 79 74 67 69 81 76 71 71 81 75 Dewpt 63 63 62 63 61 63 63 64 65 67 70 71 70 71 73 72 PWind dir NW W NW W SW SE SE S Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL CL FW FW FW FW SC SC FW SC B1 B1 B1 B1 B1 PoP 12hr 0 0 0 0 5 30 40 50 Rain shwrs C C C C C Tstms S S S $$ MDZ011-212000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 70 79 69 85 Temp 66 74 80 81 75 72 71 70 71 74 76 76 72 71 70 69 71 80 84 81 75 Dewpt 61 61 62 62 63 64 66 67 68 68 68 68 68 68 68 68 68 67 66 64 62 RH 84 64 54 53 66 76 84 90 90 82 76 76 87 90 93 97 90 65 55 56 64 Wind dir N NE NE E E E E E E E E E NE E N N W W W W W Wind spd 4 4 3 3 2 1 1 2 3 5 8 6 3 1 0 0 2 5 8 9 4 Clouds SC SC SC SC SC B2 B2 OV B2 OV OV B2 OV B1 B1 B1 SC SC SC SC FW PoP 12hr 0 50 80 50 20 QPF 12hr 0 0.10 0.86 0.20 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D L C C S S S S Tstms S S S S C C S S Heat index 81 82 82 86 83 Max heat 81 83 86 86 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 83 65 82 68 84 72 84 Temp 68 68 80 74 67 66 80 75 68 70 81 77 72 73 81 77 Dewpt 60 60 58 58 59 59 58 59 62 64 66 67 69 69 70 70 PWind dir NW W NW W S SE SE S Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW FW FW FW SC SC FW SC SC B1 B1 B1 B1 PoP 12hr 0 0 0 0 5 30 40 50 Rain shwrs C C C C C Tstms S S S $$ WVZ052-212000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 62 79 63 81 Temp 63 73 79 79 73 67 66 64 65 72 77 77 72 68 66 64 67 76 81 79 72 Dewpt 61 58 58 58 60 61 62 63 65 67 67 67 68 67 66 64 66 65 62 60 60 RH 93 59 49 49 64 81 87 97100 84 71 71 87 97100100 97 69 53 52 66 Wind dir N N NE E E N N N N SE SE E E N N N W W W W NW Wind spd 4 4 3 4 2 0 0 0 0 3 6 5 2 0 0 0 3 9 11 10 6 Clouds SC SC SC SC SC B1 B1 B2 B2 B2 B2 B2 OV B1 B1 B1 SC FW SC SC FW PoP 12hr 0 50 70 40 5 QPF 12hr 0 0.10 0.50 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L C Tstms S S Obvis PF F Heat index 82 Max heat 81 82 82 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 59 80 57 79 61 83 65 82 Temp 62 63 79 72 61 60 78 73 63 64 81 76 68 69 81 76 Dewpt 59 59 56 57 57 58 57 59 60 61 65 67 67 67 69 69 PWind dir W W NW W S SE SE S Wind char LT GN LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW SC SC SC SC SC B1 B1 B1 B1 PoP 12hr 0 0 0 0 5 20 40 50 Rain shwrs S C C S C Tstms S S S $$ VAZ506-212000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 66 79 66 84 Temp 64 73 79 82 77 70 68 68 68 73 77 78 74 70 68 67 68 78 83 80 74 Dewpt 64 66 66 66 67 66 67 67 68 72 73 72 71 70 68 67 68 70 69 67 66 RH 100 79 64 58 71 87 97 97100 97 87 82 90100100100100 76 63 65 76 Wind dir N N NE NE E SE E E E E E NE NE E N SW W W W W NW Wind spd 5 5 4 3 3 2 1 1 2 4 5 4 3 1 0 1 2 9 9 9 5 Clouds SC SC SC SC SC B2 B2 B2 OV OV B2 B1 B2 B1 B1 B1 SC SC SC SC FW PoP 12hr 0 50 80 40 10 QPF 12hr 0 0.14 0.36 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C D L C C Tstms S S S S C C Obvis PF PF Heat index 84 87 82 Max heat 84 87 86 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 82 61 81 64 84 68 83 Temp 65 64 80 74 64 63 78 74 65 67 81 76 70 70 81 76 Dewpt 63 63 62 61 60 61 64 64 64 65 71 71 70 70 74 72 PWind dir NW W NW NW S S S S Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW FW FW FW SC SC SC FW B1 B1 B1 B1 B1 PoP 12hr 0 0 0 0 5 30 50 50 Rain shwrs C C C C C Tstms C S S $$ VAZ037-212000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 66 81 65 84 Temp 66 74 81 81 74 71 69 68 68 72 78 78 71 70 68 67 66 78 83 81 72 Dewpt 63 61 62 63 64 66 67 68 68 69 70 70 70 69 68 66 66 65 61 60 60 RH 90 64 53 54 71 84 93100100 90 76 76 97 97100 97100 64 47 49 66 Wind dir NE NE E NE NE N N N E E SE E N N N N W NW NW NW NW Wind spd 4 6 5 5 3 0 0 0 1 2 3 3 0 0 0 0 4 5 6 8 5 Clouds SC SC B1 SC B1 B2 OV OV OV B2 B2 B1 B2 SC SC SC SC FW FW FW FW PoP 12hr 5 80 80 30 5 QPF 12hr 0 0.39 0.16 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C D D D C C C S S Tstms S S S S S S C C S Obvis F PF Heat index 82 82 83 82 Max heat 82 84 83 83 83 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 60 84 60 82 64 85 67 83 Temp 62 62 82 73 63 62 80 74 65 65 83 76 69 69 81 75 Dewpt 58 58 56 58 57 57 59 62 61 62 67 68 68 69 70 70 PWind dir NW W NW SE E S SW S Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW FW SC FW SC SC SC SC SC B1 B1 B1 B1 PoP 12hr 0 0 0 0 5 20 50 50 Rain shwrs S C C C C Tstms S C $$ MDZ003-212000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 62 79 63 82 Temp 61 72 79 79 72 67 65 64 66 72 77 76 72 68 66 64 67 76 81 78 72 Dewpt 61 62 61 61 63 62 62 62 65 68 69 69 69 68 66 64 67 67 66 63 63 RH 100 71 54 54 73 84 90 93 97 87 76 79 90100100100100 74 60 60 73 Wind dir N NE NE E E E E NE E SE SE SE E SE S SW SW W W W NW Wind spd 4 4 3 4 3 2 1 2 2 3 5 5 3 2 2 2 3 8 10 10 6 Clouds FW FW FW SC SC SC B1 B2 B1 B2 B1 B2 B2 B1 B1 B1 SC SC SC SC FW PoP 12hr 0 40 60 50 10 QPF 12hr 0 0.04 0.37 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C L C C C Tstms S S S Heat index 83 Max heat 81 83 83 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 80 58 79 61 82 66 82 Temp 61 62 78 71 60 60 77 72 63 65 80 75 68 69 80 75 Dewpt 61 61 59 59 59 59 60 62 60 62 67 68 67 68 71 70 PWind dir W W NW W E SE SE S Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW FW FW CL SC SC SC SC SC B1 B1 B1 B1 PoP 12hr 0 0 0 0 5 20 40 50 Rain shwrs S C C C C Tstms S S S $$ MDZ017-212000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 70 80 70 85 Temp 72 75 79 80 76 74 73 72 72 75 78 78 74 72 72 70 72 80 84 82 76 Dewpt 67 67 67 67 67 68 70 70 71 72 73 73 72 72 71 70 72 72 71 69 68 RH 84 76 67 65 74 82 90 93 97 90 85 85 93100 97100100 77 65 65 76 Wind dir N N N N E E E E E SE SE SE SW SW W W W W W W W Wind spd 9 9 6 5 3 4 4 5 5 8 6 6 4 3 3 4 4 5 4 5 3 Clouds B1 B1 SC SC B2 B2 B2 OV B2 B2 B2 OV B2 B1 B1 B1 SC SC B1 B1 SC PoP 12hr 5 70 90 30 40 QPF 12hr 0 0.34 0.80 0.01 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L D L C S C C C Tstms S S C C C C S S S S Heat index 82 84 89 85 Max heat 82 89 88 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 83 68 81 70 83 72 83 Temp 70 70 81 76 71 71 79 76 72 74 81 78 74 75 80 78 Dewpt 65 64 62 64 63 64 63 65 67 68 70 70 71 72 74 73 PWind dir NW W W NW S SE S SE Wind char LT LT LT LT LT GN GN GN Avg clouds FW FW CL FW FW FW FW FW SC SC FW B1 B1 B1 B1 B2 PoP 12hr 5 0 0 5 10 30 40 60 Rain shwrs S C C C C L Tstms S S S $$ WVZ502-212000- Petersburg WV 38.99N 79.15W Elev. 963 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 61 83 60 80 Temp 63 73 81 80 72 68 65 63 63 74 82 78 71 67 63 61 63 74 79 76 68 Dewpt 62 63 63 64 65 64 63 63 63 68 70 69 68 66 63 61 63 64 62 61 60 RH 97 71 54 58 79 87 93100100 82 67 74 90 97100100100 71 56 60 76 Wind dir NE NE E E E E N N N N NE NE E SW SW W W W W W W Wind spd 1 1 2 3 2 1 0 0 0 0 1 2 1 2 2 2 2 5 9 10 4 Clouds B2 SC SC SC B2 B1 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC FW FW FW PoP 12hr 10 60 60 40 10 QPF 12hr 0 0.24 0.21 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C L L C C Tstms S S S C C S Obvis PF F F Heat index 82 82 86 Max heat 82 83 86 83 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 56 80 54 83 58 86 63 85 Temp 58 58 78 70 57 57 80 73 61 61 84 76 66 65 83 74 Dewpt 58 57 56 57 55 55 58 60 58 59 65 67 65 65 69 68 PWind dir W W W NW W S SW W Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW SC SC SC B1 B1 B1 B1 B2 PoP 12hr 0 0 0 0 5 30 30 60 Rain shwrs C C C C L Tstms C C $$ MDZ014-212000- Annapolis MD 38.99N 76.49W Elev. 7 ft 800 AM EDT Fri Aug 21 2026 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 70 78 70 83 Temp 68 74 78 80 78 74 72 71 72 76 77 77 74 72 71 70 72 80 83 82 77 Dewpt 64 64 64 63 64 67 68 69 69 70 70 70 70 71 70 70 69 69 68 66 65 RH 87 71 62 56 62 79 87 93 90 82 79 79 87 97 97100 90 69 61 58 67 Wind dir N N NE NE N E SE E E E E E E N N N W W W W W Wind spd 8 9 6 5 0 3 3 4 5 9 10 9 5 0 0 0 3 6 8 9 5 Clouds B1 SC FW SC B1 B2 B2 OV B2 OV B2 B2 OV B1 B1 SC SC SC SC SC FW PoP 12hr 0 60 90 50 20 QPF 12hr 0 0.11 0.97 0.44 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D D L C C S S Tstms S S S C C C S S Heat index 81 83 86 84 Max heat 82 86 86 Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 81 67 82 69 84 71 84 Temp 70 70 81 77 70 69 80 77 70 72 82 78 73 74 82 78 Dewpt 63 62 60 62 62 63 62 63 65 68 70 70 70 71 74 72 PWind dir NW W NW NW S SE S S Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW SC SC FW FW B1 B1 B1 B1 B1 PoP 12hr 0 0 0 0 5 30 40 50 Rain shwrs C C C C C Tstms S S S $$