Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
278 FOUS51 KLWX 221246 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 846 AM EDT Sat Aug 22 2026 VAZ054-222000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 69 84 65 83 Temp 73 76 78 75 72 70 70 71 78 82 82 77 72 67 65 67 77 81 81 75 Dewpt 68 68 68 68 68 69 68 67 65 61 60 58 58 57 57 57 57 55 54 53 RH 84 76 71 79 87 97 93 87 64 49 47 52 61 70 75 70 50 41 39 46 Wind dir E E E E E S SW W W W W W NW NW NW W W W W NW Wind spd 8 9 10 8 5 4 6 9 12 12 13 11 10 8 8 8 12 12 12 10 Clouds OV B2 B2 B2 B2 B2 B1 SC FW FW SC FW FW FW FW SC FW SC FW FW PoP 12hr 70 60 0 5 0 QPF 12hr 0.70 0.10 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C Tstms S C C S Heat index 83 82 81 81 Max heat 83 84 81 81 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 64 84 67 87 71 86 71 87 Temp 66 65 81 77 68 68 84 80 73 73 84 79 73 73 85 81 Dewpt 55 56 54 57 60 61 63 65 68 68 69 69 70 69 70 69 PWind dir NW NW W SW S S S W Wind char GN GN LT GN GN GN GN LT Avg clouds FW CL FW FW FW SC SC SC B1 B1 B1 B2 B1 B1 SC B1 PoP 12hr 0 0 0 10 30 60 50 30 Rain shwrs S C S L C C S C Tstms S S S C S $$ MDZ013-222000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 67 83 63 81 Temp 73 75 75 72 70 69 68 69 77 81 81 74 70 65 63 65 76 79 79 73 Dewpt 70 70 71 71 70 69 68 69 69 66 64 63 61 59 59 60 61 59 57 58 RH 90 84 87 97100100100100 76 60 56 69 73 81 87 84 60 50 47 59 Wind dir E E E E NE N W W W W W W W W W W W W W NW Wind spd 6 6 6 4 2 1 2 4 9 10 10 6 5 4 4 4 9 10 10 5 Clouds OV B2 B2 B2 OV B2 B2 B1 SC FW SC FW FW FW FW SC FW SC FW FW PoP 12hr 50 60 5 5 0 QPF 12hr 0.52 0.06 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C Tstms S C C S Heat index 83 83 Max heat 83 84 81 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 82 65 85 69 84 70 86 Temp 64 64 80 75 66 67 83 78 71 72 82 77 71 72 84 79 Dewpt 57 58 58 61 63 64 65 68 69 70 72 72 71 71 72 72 PWind dir W W NW S S S S SW Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW FW FW FW SC SC B1 B1 B2 B2 B1 SC B1 PoP 12hr 0 0 0 10 20 60 60 30 Rain shwrs S S S L L C S C Tstms S S S C S $$ MDZ011-222000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 68 84 65 82 Temp 75 77 77 73 71 70 69 70 78 82 82 75 70 67 65 67 77 80 80 73 Dewpt 65 66 67 67 68 68 68 66 64 61 59 58 58 58 57 57 55 54 54 54 RH 71 69 71 81 90 93 97 87 62 49 46 55 66 73 75 70 47 41 41 51 Wind dir E E E E NE N W W W W W W W W W W W W W NW Wind spd 5 8 8 4 2 0 1 3 9 10 10 6 4 3 3 4 9 11 10 6 Clouds OV B2 B2 B2 B2 B2 B2 B1 SC FW SC FW FW FW FW FW FW SC FW FW PoP 12hr 50 60 5 5 0 QPF 12hr 0.37 0.11 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C Tstms S C C S Heat index 83 82 80 80 Max heat 83 84 80 81 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 63 84 66 86 71 86 71 87 Temp 65 65 82 77 67 69 83 78 72 73 83 78 72 73 84 80 Dewpt 56 55 54 56 60 60 61 63 67 68 68 69 70 69 69 69 PWind dir W W NW S S S S SW Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL CL FW FW FW FW SC B1 B1 B1 B2 B2 B1 SC B1 PoP 12hr 0 0 0 10 20 60 60 30 Rain shwrs S S S L L C S C Tstms S S S C S $$ WVZ052-222000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 61 81 57 78 Temp 73 78 77 73 67 66 63 65 75 80 79 71 64 60 57 61 73 78 77 70 Dewpt 65 66 66 66 66 66 63 65 62 58 57 56 57 57 56 57 56 54 53 53 RH 76 67 69 79 97100100100 64 47 47 59 78 90 96 87 55 43 43 55 Wind dir SE SE SE SE S SW SW W W W W W W W W W W W W NW Wind spd 4 8 8 5 3 1 3 6 11 12 11 6 4 4 5 6 10 11 11 6 Clouds OV B2 B2 B2 OV B2 B2 SC FW SC SC FW FW FW SC FW FW FW FW CL PoP 12hr 40 90 0 5 0 QPF 12hr 0.02 0.15 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C D L C Tstms S C C Obvis PF Heat index 81 Max heat 81 81 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 55 81 57 84 64 84 64 85 Temp 57 59 81 74 61 61 82 77 67 68 82 77 68 68 83 78 Dewpt 54 54 55 56 58 59 61 62 64 66 68 68 67 67 67 67 PWind dir W NW NW S SE S SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds CL CL FW FW FW FW SC B1 SC B1 B1 B1 B1 B1 B1 SC PoP 12hr 0 0 0 5 10 50 40 30 Rain shwrs S C C C Tstms S S S $$ VAZ506-222000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 66 83 61 81 Temp 73 77 77 73 70 68 67 68 77 81 81 74 67 63 61 63 75 79 79 73 Dewpt 70 72 71 71 70 68 67 68 68 65 63 63 61 60 58 59 61 59 57 57 RH 90 85 82 93100100100100 74 58 54 69 81 90 90 87 62 50 47 57 Wind dir E E E E W SW SW W W W W NW NW NW W W W W NW NW Wind spd 4 5 5 4 2 1 2 4 10 10 10 6 4 3 3 3 9 10 10 6 Clouds OV B2 B2 B2 OV B2 B1 SC FW FW SC FW FW FW FW FW FW SC FW FW PoP 12hr 50 60 5 0 0 QPF 12hr 0.63 0.05 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C Tstms S C C Heat index 83 82 Max heat 83 84 81 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 83 62 86 68 85 68 87 Temp 61 61 81 76 64 65 83 79 70 70 83 78 70 70 84 79 Dewpt 56 56 59 60 61 63 67 68 68 69 73 72 70 70 73 72 PWind dir NW NW NW S S S S NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW FW SC SC SC SC B1 B1 B2 B1 B1 SC B1 PoP 12hr 0 0 0 5 30 60 50 30 Rain shwrs C S L C S C Tstms S S S S $$ VAZ037-222000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 64 84 58 82 Temp 72 78 78 72 69 68 66 66 77 82 82 72 66 61 58 60 76 81 81 71 Dewpt 68 69 69 69 69 68 66 65 62 57 56 56 56 56 55 57 55 54 52 54 RH 87 74 74 90100100100 97 60 43 41 57 70 84 90 90 48 39 37 55 Wind dir NE E SE E N N SW W W W W NW NW W W W W W NW NW Wind spd 3 4 4 2 0 0 3 5 8 8 9 6 5 3 3 4 6 6 8 8 Clouds B2 B1 B1 B2 B2 B1 SC FW FW FW FW FW CL FW FW CL CL FW FW CL PoP 12hr 40 60 0 0 0 QPF 12hr 0.06 0.07 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S C L S Tstms S C C Obvis F F Heat index 82 82 81 Max heat 83 82 83 81 81 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 57 83 61 85 66 84 67 86 Temp 59 59 81 74 64 63 83 77 69 69 82 75 69 69 85 77 Dewpt 54 54 54 58 58 58 64 66 67 68 70 70 69 69 69 70 PWind dir NW SW E S SE S S S Wind char LT LT LT LT LT LT LT LT Avg clouds CL FW FW FW FW SC SC SC SC B1 B1 B2 B1 B1 SC B1 PoP 12hr 0 0 0 5 20 70 40 30 Rain shwrs S S C L C C Tstms C S S $$ MDZ003-222000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 63 80 58 78 Temp 74 79 77 72 68 66 65 65 74 79 77 70 63 60 58 60 72 77 76 68 Dewpt 66 69 69 68 68 66 65 65 65 63 62 61 60 59 57 59 60 58 58 57 RH 76 72 76 87100100100100 74 58 60 73 90 96 96 96 66 52 54 68 Wind dir SE SE SE SE E SW SW W W W W W W W SW W W W W NW Wind spd 4 6 6 5 3 3 3 4 10 11 11 6 3 3 3 4 10 11 11 6 Clouds OV B2 B2 B1 OV B2 B2 SC FW SC SC CL FW FW SC FW FW SC FW FW PoP 12hr 40 90 5 5 0 QPF 12hr 0.05 0.20 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C D L C S Tstms S C C S Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 81 59 84 65 84 66 85 Temp 58 58 80 73 61 62 81 77 67 68 82 77 68 68 83 78 Dewpt 56 56 59 61 59 60 64 65 65 67 70 70 68 68 70 69 PWind dir W W NW SW SE S S NW Wind char LT LT LT LT LT LT LT LT Avg clouds CL CL FW FW FW SC FW B1 SC B1 B1 B1 B1 B1 SC SC PoP 12hr 0 0 0 5 10 50 40 20 Rain shwrs C C S S Tstms S S S $$ MDZ017-222000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 69 85 67 82 Temp 75 77 77 74 72 71 70 71 79 83 83 76 73 69 67 69 77 80 81 74 Dewpt 71 72 71 72 71 71 70 70 69 66 65 66 65 62 61 62 61 60 59 62 RH 87 85 82 93 97100100 97 72 57 55 71 76 78 81 78 58 51 47 66 Wind dir E E E SE SW W W W W W W W W NW NW NW W W W NW Wind spd 9 8 8 4 3 3 4 5 8 6 6 3 4 5 5 5 6 5 5 3 Clouds OV B2 OV B2 B1 B2 B1 B1 SC FW SC SC SC FW SC FW FW SC SC SC PoP 12hr 70 40 10 5 0 QPF 12hr 0.72 0.09 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C C Tstms S C C S Heat index 85 85 81 81 Max heat 85 87 81 82 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 82 68 84 72 84 71 85 Temp 69 69 80 75 72 72 81 79 74 75 82 79 74 74 83 80 Dewpt 60 61 59 63 65 66 67 69 70 71 72 73 72 72 73 73 PWind dir NW NW SW S S S SW SW Wind char LT LT LT LT LT GN LT LT Avg clouds SC FW FW FW FW SC FW SC B1 B1 B1 B1 B1 B1 SC B1 PoP 12hr 0 0 0 20 30 50 50 30 Rain shwrs S C C S C C C S C Tstms S S S S S $$ WVZ502-222000- Petersburg WV 38.99N 79.15W Elev. 963 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 60 79 55 77 Temp 75 81 78 70 66 63 61 62 73 79 75 67 61 57 55 57 71 77 74 66 Dewpt 67 68 69 68 66 63 61 62 62 59 59 57 57 56 54 55 56 54 53 54 RH 76 65 74 93100100100100 68 50 58 70 87 96 96 93 59 45 48 65 Wind dir E SE SE S SW S SW SW W W W W W W SW W W W W W Wind spd 1 2 3 2 3 2 3 3 9 10 10 5 3 2 2 2 8 9 10 3 Clouds OV B2 B1 B2 B2 B1 B1 B1 SC SC FW FW FW SC B1 SC FW FW CL CL PoP 12hr 70 70 5 5 0 QPF 12hr 0.14 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L C Tstms S C C S Heat index 84 Max heat 84 85 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 52 82 56 87 62 86 62 87 Temp 54 54 81 70 58 58 84 75 64 64 83 75 65 65 84 77 Dewpt 52 52 56 58 55 55 62 64 62 63 68 68 65 65 68 67 PWind dir W NW W SW SW S SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds CL FW CL FW FW SC FW SC SC B1 B1 B2 B1 SC SC B1 PoP 12hr 0 0 0 10 10 60 30 30 Rain shwrs C L C C Tstms S S S $$ MDZ014-222000- Annapolis MD 38.99N 76.49W Elev. 7 ft 846 AM EDT Sat Aug 22 2026 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 68 84 66 81 Temp 76 77 78 75 72 70 69 70 79 84 84 78 72 68 66 68 77 81 81 76 Dewpt 68 68 68 69 70 70 69 68 67 64 62 61 62 60 59 59 58 57 56 57 RH 76 74 71 82 93100100 93 67 51 48 56 71 76 78 73 52 44 42 52 Wind dir E E E E SE N W W W W W W W W W W W W W NW Wind spd 9 10 9 6 1 0 3 5 10 11 10 6 6 5 5 6 10 11 10 6 Clouds OV B2 B2 B2 B2 B2 B2 B1 SC FW SC FW FW FW SC FW FW SC FW FW PoP 12hr 60 60 5 5 0 QPF 12hr 0.53 0.27 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C S Tstms S C C S Heat index 85 85 81 81 Max heat 85 85 81 81 Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 82 67 85 71 85 71 86 Temp 67 67 81 77 69 70 82 78 73 73 83 79 73 73 84 80 Dewpt 58 58 56 61 64 65 66 68 69 70 72 71 71 71 72 72 PWind dir NW W W S S S SW SW Wind char LT LT LT LT LT GN LT LT Avg clouds FW CL FW FW FW FW SC SC SC B1 B1 B1 B2 B1 SC B1 PoP 12hr 0 0 0 10 30 50 60 30 Rain shwrs S C S C L C S C Tstms S S S C S $$