Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
353 FOUS51 KLWX 121924 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 324 PM EDT Sat Sep 12 2026 VAZ054-130800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 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 72 87 71 81 59 Temp 82 78 74 73 73 73 79 85 85 80 76 74 73 72 75 79 79 71 65 61 59 60 Dewpt 72 72 72 72 72 72 73 71 70 71 71 69 67 64 60 56 52 51 50 50 49 50 RH 72 82 93 97 97 97 82 63 61 74 85 84 81 76 60 45 39 49 58 67 69 69 Wind dir SE SE SE S SW W W NW NW W W W NW N N N N N NE NE N NE Wind spd 9 6 4 1 1 2 5 5 4 2 2 3 6 9 14 14 14 10 9 9 8 8 Clouds B2 B2 OV OV OV B2 FW FW SC FW SC FW SC SC FW FW FW FW FW FW FW FW PoP 12hr 90 20 5 5 0 QPF 12hr 0.19 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L D L S Tstms C C S S S S Obvis PF PF Heat index 87 90 90 83 Max heat 87 90 91 80 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 81 62 82 65 85 68 86 68 83 Temp 79 72 64 64 80 75 67 66 83 77 70 70 84 79 70 69 80 76 Dewpt 53 56 59 60 62 61 62 62 63 64 64 64 67 66 65 63 63 63 PWind dir E SE S S S SW W NE SE Wind char LT LT LT LT GN GN GN GN GN Avg clouds FW FW FW FW FW FW FW FW FW CL FW FW FW B1 B1 B1 SC SC PoP 12hr 0 0 0 5 10 10 30 30 20 Rain shwrs C C S $$ MDZ013-130800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 86 68 79 57 Temp 81 76 73 72 72 71 78 84 84 79 74 72 70 69 74 77 77 68 63 59 57 59 Dewpt 71 72 73 72 72 71 73 72 71 72 71 70 67 64 60 55 53 53 52 50 49 51 RH 72 87100100100100 85 67 65 79 90 93 90 84 62 47 43 59 67 72 75 75 Wind dir SE SE SE SE W W W NW NW W W W NW N N N N N N NE NE NE Wind spd 9 6 4 2 2 2 5 5 4 2 2 3 6 9 11 11 11 6 4 4 4 4 Clouds OV B2 OV OV OV B2 SC FW FW FW FW SC SC B1 SC FW CL CL CL FW FW FW PoP 12hr 90 20 5 5 0 QPF 12hr 0.38 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D L S Tstms C C C S S Obvis PF PF PF Heat index 85 90 89 Max heat 85 90 92 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 60 81 63 84 66 85 65 81 Temp 76 70 63 63 79 74 65 65 83 77 68 67 82 77 67 66 79 75 Dewpt 54 59 61 62 65 64 63 64 67 67 65 66 69 68 65 64 65 65 PWind dir E S S S S SW NW N E Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW FW FW FW SC B1 B1 B1 SC SC PoP 12hr 0 0 0 0 10 10 30 30 30 Rain shwrs C C C $$ MDZ011-130800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 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 72 87 70 80 59 Temp 81 78 75 73 73 73 79 85 85 80 76 74 72 70 75 78 77 69 64 61 59 60 Dewpt 68 70 72 73 72 72 71 71 70 70 70 69 66 62 58 53 51 50 50 50 48 49 RH 65 76 90100 97 97 77 63 61 72 82 84 81 76 55 42 40 51 60 67 67 67 Wind dir SE SE SE SE W W W NW NW W W W NW N N N N N N N N NE Wind spd 9 6 5 2 1 1 4 5 4 2 2 3 8 10 11 12 11 6 4 4 3 3 Clouds B2 OV OV OV OV B2 SC SC FW FW SC B1 SC B1 SC FW FW CL FW FW FW FW PoP 12hr 90 20 5 5 0 QPF 12hr 0.43 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C D L S Tstms S C C S S Obvis PF PF PF Heat index 84 90 90 83 Max heat 85 90 92 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 79 63 82 66 85 69 86 67 83 Temp 77 71 64 65 79 75 66 67 84 78 70 70 84 78 69 68 80 75 Dewpt 51 53 59 59 60 59 61 61 63 63 64 63 65 64 63 61 60 61 PWind dir SE SE S S S SW NW N E Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW FW FW SC SC B1 B1 B1 B1 SC PoP 12hr 0 0 0 0 10 10 40 30 20 Rain shwrs C C S $$ WVZ052-130800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 85 65 78 50 Temp 80 75 71 70 69 69 78 84 85 79 71 70 67 66 72 77 76 65 57 53 51 53 Dewpt 70 71 70 70 69 69 71 70 69 68 67 66 64 61 57 52 50 51 50 49 48 49 RH 72 87 97100100100 79 63 59 69 87 87 90 84 59 42 40 60 77 86 89 86 Wind dir SE SE SE N N N NW NW NW W W W NW NW N N N N N N N N Wind spd 9 6 3 0 0 0 5 6 5 3 3 4 9 9 11 11 10 5 0 0 0 0 Clouds B2 OV OV OV B2 B1 SC SC FW FW SC B1 B1 FW SC FW FW CL FW FW FW FW PoP 12hr 90 5 20 0 0 QPF 12hr 0.35 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D C C S Tstms C C C Obvis PF PF PF Heat index 83 88 89 Max heat 83 88 89 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 55 82 60 85 63 83 60 80 Temp 76 70 59 58 80 73 63 62 83 76 66 66 81 75 64 63 78 72 Dewpt 52 54 55 56 62 63 61 61 65 65 64 64 67 65 62 61 61 61 PWind dir SE SE SE S S SW NW N W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW FW SC SC SC B1 B1 SC SC B1 PoP 12hr 0 0 0 0 20 20 30 20 30 Rain shwrs S S S C S C Tstms S $$ VAZ506-130800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 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 68 87 68 80 53 Temp 81 75 73 72 70 71 79 85 85 77 73 71 70 68 74 78 77 67 61 56 54 55 Dewpt 73 73 73 72 70 71 73 73 72 72 70 68 67 64 61 57 54 54 52 50 49 50 RH 77 94100100100100 82 67 65 85 90 90 90 87 64 48 45 63 72 80 83 83 Wind dir SE SE SE S W SW NW NW NW W W W NW N N N N N N N N N Wind spd 8 6 4 2 1 2 5 6 4 2 3 3 9 10 12 12 11 5 3 3 3 3 Clouds B2 OV OV B2 OV B2 SC SC FW FW SC SC FW SC FW FW CL CL FW FW FW FW PoP 12hr 90 10 5 5 0 QPF 12hr 0.41 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D L D L Tstms C C S S Obvis PF PF PF Heat index 86 92 91 Max heat 86 92 92 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 81 57 82 61 86 64 86 63 82 Temp 79 70 60 60 81 74 63 64 84 77 68 66 83 77 67 65 79 74 Dewpt 54 60 60 60 66 66 63 63 68 67 65 65 71 69 65 63 67 66 PWind dir SE S S S S S NW NE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW FW FW SC FW B1 B1 B1 B1 B1 PoP 12hr 0 0 0 5 10 10 30 30 30 Rain shwrs C C C $$ VAZ037-130800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 86 66 81 54 Temp 79 73 72 71 70 69 79 85 84 76 72 69 68 68 75 79 80 68 61 58 56 55 Dewpt 73 73 72 71 70 69 73 71 71 71 70 68 66 66 64 60 56 55 51 51 49 50 RH 82100100100100100 82 63 65 85 93 97 93 93 69 52 44 63 70 77 77 83 Wind dir E E N N N N N NW NW N N W NW N N N N NE N N N N Wind spd 4 1 0 0 0 0 0 2 2 0 0 1 3 5 8 8 8 6 4 3 4 4 Clouds B2 B2 B2 B2 OV B1 FW SC SC FW SC SC FW FW SC FW FW FW FW FW FW FW PoP 12hr 70 20 5 10 0 QPF 12hr 0.08 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L L C S S Tstms C C S S S Obvis PF PF PF PF Heat index 90 89 80 Max heat 90 91 81 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 56 83 60 86 63 85 63 81 Temp 76 69 59 58 82 74 64 62 85 76 67 65 84 76 68 64 79 73 Dewpt 53 58 57 57 62 64 62 61 64 66 64 63 66 68 66 64 64 65 PWind dir E N SE N S W S N SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW FW FW CL CL FW FW FW B1 SC SC SC B1 PoP 12hr 0 0 5 0 10 5 40 20 30 Rain shwrs C S C $$ MDZ003-130800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 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 67 85 64 77 50 Temp 81 76 71 71 69 68 77 82 85 79 71 70 67 65 70 75 75 64 57 53 51 53 Dewpt 70 70 70 70 69 68 71 70 70 69 67 66 63 60 57 53 51 51 50 48 47 48 RH 69 82 97 97100100 82 67 61 72 87 87 87 84 63 46 43 63 77 83 86 83 Wind dir SE SE SE S SW W NW NW NW W W W NW NW N N N N NE NE N NE Wind spd 9 6 4 3 2 2 4 5 5 3 3 4 9 9 11 11 10 4 3 3 3 2 Clouds OV OV OV OV OV B1 SC SC FW FW SC B1 B1 FW FW FW FW CL FW FW FW FW PoP 12hr 90 10 20 0 0 QPF 12hr 0.41 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D L C S Tstms C C C Obvis PF PF PF PF Heat index 85 86 90 Max heat 85 86 90 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 79 56 82 61 85 64 83 60 79 Temp 76 69 59 59 79 75 64 64 83 77 68 66 80 74 65 61 77 72 Dewpt 52 56 55 58 65 65 61 62 68 66 64 64 69 66 62 61 63 62 PWind dir SE SE S SE S S NW NE NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW FW FW SC SC SC B1 B1 B1 B1 B1 PoP 12hr 0 0 0 0 10 20 40 20 30 Rain shwrs S S C S C $$ MDZ017-130800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 85 72 80 63 Temp 80 76 74 73 73 73 79 83 85 79 75 74 73 74 77 78 78 72 69 65 63 65 Dewpt 74 74 74 73 73 73 74 74 74 73 73 72 71 69 65 61 59 57 55 55 55 57 RH 82 94100100100100 85 74 70 82 94 93 93 84 67 56 52 59 61 70 75 75 Wind dir SE SE SE S SW SW W NW W S SW W NW N N N N N N NE NE NE Wind spd 12 10 8 6 6 8 8 5 4 3 4 5 6 12 16 14 13 10 9 10 9 8 Clouds B1 OV B2 B2 B2 B2 B1 FW FW FW SC SC FW SC SC FW CL FW CL FW CL CL PoP 12hr 80 20 5 10 0 QPF 12hr 0.16 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C L L S S Tstms C C S S S S S Obvis PF Heat index 84 90 93 Max heat 84 90 93 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 64 78 66 81 68 84 68 81 Temp 77 73 67 68 77 73 69 69 80 76 72 71 82 77 72 70 79 75 Dewpt 56 60 63 63 61 63 66 65 64 66 68 67 68 69 68 67 66 66 PWind dir E SE SE S S S S NE E Wind char LT LT LT LT LT LT LT LT GN Avg clouds FW FW FW FW FW CL FW FW FW CL FW SC FW SC SC SC SC SC PoP 12hr 0 0 0 0 5 10 20 30 20 Rain shwrs S C S S $$ WVZ502-130800- Petersburg WV 38.99N 79.15W Elev. 963 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 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 87 63 80 50 Temp 82 74 70 69 67 67 77 85 86 77 69 68 65 63 70 78 78 64 58 54 52 51 Dewpt 72 71 70 68 67 67 71 69 68 68 67 66 64 62 59 55 53 54 51 49 48 49 RH 72 90100 97100100 82 59 55 74 93 93 97 97 68 45 42 70 77 83 86 93 Wind dir S S SW N N SE NW NW NW W SW SW N N N NW N N N N N N Wind spd 4 2 1 0 0 1 1 3 4 3 2 1 2 3 5 6 6 3 1 0 0 0 Clouds B2 OV OV OV B2 SC SC FW FW FW B1 B2 B1 SC FW FW FW FW FW SC FW FW PoP 12hr 70 10 20 5 0 QPF 12hr 0.17 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L C Tstms C C C Obvis PF PF PF PF Heat index 87 89 89 Max heat 92 89 89 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 56 88 61 90 63 86 60 82 Temp 79 72 59 58 85 76 65 63 87 79 68 64 83 75 65 61 79 72 Dewpt 57 60 56 56 66 67 62 61 68 69 64 63 70 68 64 61 65 64 PWind dir SE S SE S SW SW NW W W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW SC FW FW SC SC SC B1 B1 B1 B1 SC B1 PoP 12hr 0 0 5 5 20 20 50 30 40 Rain shwrs S S C C C S S C Tstms S $$ MDZ014-130800- Annapolis MD 38.99N 76.49W Elev. 7 ft 324 PM EDT Sat Sep 12 2026 Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 86 70 78 62 Temp 82 78 74 73 72 73 80 85 86 81 75 74 72 71 76 78 78 72 67 64 62 64 Dewpt 71 72 73 73 72 73 73 72 72 73 73 71 68 65 61 56 54 53 54 54 52 53 RH 69 82 97100100100 79 65 63 77 94 90 87 81 60 47 43 51 63 70 70 67 Wind dir SE SE SE SE SW W W NW NW SW W W NW N N N N N N NE NE NE Wind spd 10 8 6 4 4 4 6 5 5 4 3 4 8 11 13 13 13 10 9 9 8 8 Clouds B2 B2 OV OV OV B2 SC SC SC FW FW SC FW SC SC FW FW FW FW FW FW FW PoP 12hr 90 30 5 5 0 QPF 12hr 0.30 0.07 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D L C Tstms C C C S S Obvis PF PF Heat index 86 84 91 92 86 Max heat 86 91 92 Date 09/15 Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 62 80 64 83 66 85 66 82 Temp 76 73 65 65 79 74 67 67 82 77 70 69 83 78 68 68 79 75 Dewpt 53 59 61 61 64 63 64 64 67 67 66 66 70 69 66 65 66 65 PWind dir E S S S S SW N NE E Wind char LT LT LT LT LT LT LT LT GN Avg clouds FW FW FW FW FW FW FW FW FW FW FW FW SC B1 B1 B1 SC B1 PoP 12hr 0 0 0 0 5 10 30 30 20 Rain shwrs C C S $$