Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
089 FOUS51 KLWX 202100 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 500 PM EDT Sun Sep 20 2026 VAZ054-210800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 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 76 64 67 59 Temp 82 77 73 72 68 68 73 74 74 71 68 67 66 66 65 66 65 64 63 62 61 59 Dewpt 70 70 71 69 66 63 63 63 63 63 64 65 65 64 64 63 63 61 60 59 58 56 RH 67 79 93 90 93 84 71 69 69 76 87 93 97 93 97 90 93 90 90 90 90 90 Wind dir SW W N N N N NE NE E E E NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 4 4 8 9 11 10 10 11 11 11 10 11 13 13 14 14 14 14 14 13 13 Clouds B2 B2 B2 B1 B1 B1 B2 B2 OV OV OV OV OV B2 OV OV OV OV OV OV OV B2 PoP 12hr 40 20 90 90 70 QPF 12hr 0.01 0 0.39 0.54 0.47 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S O O O O D D D D L L L L C Tstms S S S Heat index 86 Max heat 86 Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 64 58 65 56 66 55 70 56 73 Temp 62 63 60 58 62 62 58 56 64 62 57 57 68 65 59 57 72 67 Dewpt 57 56 55 53 55 53 52 49 50 50 50 49 51 52 52 52 54 55 PWind dir NE NE NE N N N N N N Wind char GN BZ BZ GN BZ BZ BZ GN GN Avg clouds B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 40 30 20 10 10 20 5 10 Rain shwrs C C C C C S S S $$ MDZ013-210800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 75 59 67 55 Temp 82 75 71 69 65 65 72 73 73 68 65 64 62 62 64 66 65 63 61 59 57 56 Dewpt 68 71 71 68 65 63 65 64 64 63 64 63 62 62 64 64 64 61 59 58 55 55 RH 63 87100 97100 93 79 73 73 84 97 97100100100 93 97 93 93 96 93 96 Wind dir SW W NW N N N NE NE NE E E NE NE NE NE NE NE NE NE NE NE NE Wind spd 4 3 3 6 8 9 11 11 12 10 10 9 11 12 16 16 17 13 12 12 12 12 Clouds B2 B2 B2 B2 SC B1 B2 B2 OV OV OV OV OV B2 OV OV OV OV OV OV OV B2 PoP 12hr 50 20 90 90 70 QPF 12hr 0.02 0.01 0.38 0.57 0.45 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S O O O O D D D D L L L L C Tstms S S S Heat index 85 Max heat 85 Coast Flood Y Y Y Y Y Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 66 54 66 53 68 53 71 55 74 Temp 64 63 57 56 63 62 56 54 65 62 55 55 68 64 57 57 72 67 Dewpt 59 56 54 53 57 55 52 50 52 52 50 51 54 54 53 53 56 57 PWind dir NE NE NE N N N N N N Wind char BZ GN GN GN GN GN GN LT GN Avg clouds B2 B2 B2 B2 B2 B2 B2 B1 SC B1 SC SC SC SC SC B1 SC SC PoP 12hr 50 30 20 10 20 20 20 10 10 Rain shwrs C C C C S S S S S S S $$ MDZ011-210800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 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 76 62 68 58 Temp 82 75 72 69 66 66 72 74 74 69 66 64 63 63 65 67 66 63 61 60 59 58 Dewpt 69 70 70 67 63 60 61 59 60 58 60 62 61 59 60 58 59 56 55 56 54 52 RH 65 84 93 93 90 81 68 59 62 68 81 93 93 87 84 73 78 78 81 87 83 80 Wind dir SW W NW N N N NE NE NE E E NE NE NE NE NE NE NE NE NE NE NE Wind spd 5 3 4 8 8 9 11 11 12 10 10 9 11 12 16 16 17 12 12 12 12 12 Clouds B2 B2 B2 B2 SC B2 B2 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV B2 PoP 12hr 60 20 90 90 70 QPF 12hr 0.01 0 0.42 0.56 0.37 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L C S S O O O O D D D D L L C C C Tstms S S S Heat index 85 Max heat 85 Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 67 57 67 55 69 56 72 58 75 Temp 65 64 58 57 65 63 57 56 66 63 57 57 70 65 59 59 73 68 Dewpt 53 51 52 50 51 50 50 47 48 48 49 48 49 50 51 50 51 52 PWind dir NE NE NE N N N N N N Wind char GN GN GN GN GN GN GN LT GN Avg clouds B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC SC B1 SC SC PoP 12hr 40 20 20 10 20 20 20 10 20 Rain shwrs C S S S S S S S S S S S $$ WVZ052-210800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 60 68 55 62 51 Temp 80 73 68 67 63 62 65 66 66 64 61 61 60 59 61 61 60 59 57 56 54 52 Dewpt 67 69 68 67 63 59 57 57 59 59 61 61 60 59 59 59 58 57 57 56 54 52 RH 65 87100100100 90 75 73 78 84100100100100 93 93 93 93100100100100 Wind dir W W N N N N NE NE NE NE E E NE NE NE NE NE NE NE NE NE NE Wind spd 8 4 3 6 8 8 10 9 9 4 5 5 6 8 12 12 12 9 8 8 8 8 Clouds OV B1 B2 B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV B2 OV OV OV B2 PoP 12hr 50 50 90 100 80 QPF 12hr 0.04 0.13 0.54 0.51 0.39 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C O O O O D D D D D D L L C Tstms S Obvis PF PF PF Heat index 82 Max heat 82 Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 60 50 60 48 64 48 69 49 73 Temp 58 58 55 51 59 56 51 50 63 58 51 50 67 61 53 51 71 64 Dewpt 51 52 52 49 50 50 50 48 47 48 48 47 49 50 50 50 52 54 PWind dir NE NE NE N N N N N N Wind char GN GN GN LT GN LT GN LT LT Avg clouds OV B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 30 20 10 10 5 5 5 Rain shwrs C C C C C S S $$ VAZ506-210800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 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 74 59 66 54 Temp 81 74 70 68 65 64 70 72 72 68 65 64 63 63 65 66 64 62 61 59 56 55 Dewpt 70 71 70 68 65 63 65 66 66 65 65 64 63 63 65 65 64 62 61 59 56 55 RH 69 90100100100 97 84 81 81 90100100100100100 97100100100100100100 Wind dir SW W N N N NE N NE NE E E NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 3 3 5 6 8 10 10 11 6 6 5 8 9 13 13 13 10 9 10 9 10 Clouds OV B1 B2 B2 B1 B1 B2 B2 OV OV OV OV OV B2 OV OV OV OV OV OV OV B2 PoP 12hr 40 30 90 90 80 QPF 12hr 0.01 0 0.52 0.52 0.48 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S S C C O O O O D D D D D D L L C Tstms S S S Obvis PF Heat index 85 Max heat 85 Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 63 53 63 51 66 50 69 52 73 Temp 61 60 57 55 61 59 54 52 63 59 52 53 67 62 54 54 72 64 Dewpt 60 59 56 53 58 56 53 50 54 53 50 50 56 55 53 52 59 59 PWind dir NE NE NE N N N N N N Wind char GN GN GN LT GN GN GN LT GN Avg clouds B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 40 30 10 10 10 10 5 20 Rain shwrs C C C C C S S $$ VAZ037-210800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 75 61 67 55 Temp 81 75 71 70 68 66 72 73 73 68 66 65 64 62 66 67 65 63 62 61 58 56 Dewpt 70 70 71 70 68 66 66 65 65 65 66 65 64 62 66 66 65 63 62 61 58 56 RH 69 84100100100100 81 76 76 90100100100100100 97100100100100100100 Wind dir SW SW N N NE NE NE NE NE N N NE NE NE NE NE NE NE NE N N N Wind spd 4 2 2 3 4 5 9 9 9 4 3 3 3 4 9 11 11 9 9 8 9 9 Clouds B2 B1 SC FW B1 B2 B2 OV B2 OV OV OV B2 B2 OV OV OV B2 OV OV OV B2 PoP 12hr 20 50 90 90 90 QPF 12hr 0.01 0.05 0.46 0.41 0.39 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S C C C O O O O D D D D D D L L L Tstms C Obvis PF PF PF PF Heat index 85 Max heat 85 Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 60 53 59 51 64 49 69 50 73 Temp 59 58 57 54 58 56 53 52 63 58 51 50 68 61 54 51 72 62 Dewpt 58 58 57 54 56 55 53 51 51 51 49 48 51 53 51 50 54 57 PWind dir NE NE N N N NW N NW N Wind char GN GN GN GN GN LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC FW SC SC SC SC SC PoP 12hr 70 60 40 10 10 5 5 0 5 Rain shwrs L L L C C C $$ MDZ003-210800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 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 59 68 54 62 51 Temp 79 72 68 66 62 61 64 66 66 64 61 60 59 58 60 61 60 59 57 56 54 52 Dewpt 68 69 68 66 61 58 58 60 61 60 60 60 59 58 60 60 60 58 57 55 53 52 RH 69 90100100 97 90 81 81 84 87 97100100100100 97100 96100 96 96100 Wind dir W NW N NE N NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 4 4 8 8 8 11 10 11 6 6 6 9 11 13 13 13 10 10 9 9 9 Clouds OV B2 B1 B2 B2 OV OV OV OV OV OV OV OV B2 OV OV OV OV OV OV OV B2 PoP 12hr 60 40 90 90 70 QPF 12hr 0.01 0.13 0.53 0.71 0.23 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C C C C O O O O D D D D L L L L C Tstms S Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 61 50 61 48 65 48 69 50 74 Temp 59 58 54 51 58 57 51 50 63 58 51 51 67 62 54 51 71 65 Dewpt 54 54 51 49 52 52 50 48 50 50 48 48 52 53 51 51 55 56 PWind dir NE NE NE N N N N N N Wind char GN GN GN LT GN GN GN LT LT Avg clouds OV B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 40 20 10 10 10 10 5 10 Rain shwrs C C C C S S $$ MDZ017-210800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 78 66 74 62 Temp 83 76 72 72 70 70 75 77 76 70 69 69 68 69 73 74 72 67 66 64 63 64 Dewpt 70 72 71 72 70 68 68 67 67 67 66 67 67 68 68 68 67 64 63 62 61 61 RH 65 87 97100100 93 79 71 74 90 90 93 97 97 84 82 84 90 90 93 93 90 Wind dir S S SW NW N N N NE NE E E E E E NE NE NE NE NE NE NE NE Wind spd 8 5 4 4 9 11 13 11 12 13 13 10 9 10 14 18 20 19 19 18 20 19 Clouds B1 B2 B1 B2 SC B1 B2 B2 OV B2 OV OV OV B2 B2 B2 B2 OV B2 OV B2 B2 PoP 12hr 40 20 70 80 70 QPF 12hr 0.04 0 0.39 1.07 0.46 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S L L L L D D D D L L L L L Tstms S S C Heat index 87 Max heat 87 Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 71 61 69 59 69 58 71 59 72 Temp 69 67 65 63 67 66 63 61 66 65 61 60 68 66 62 61 70 68 Dewpt 62 60 59 59 60 58 56 55 55 54 54 54 55 55 55 56 56 57 PWind dir NE NE NE NE N N N N N Wind char BZ BZ BZ BZ BZ GN BZ GN GN Avg clouds B2 B2 B2 B2 B2 B2 B1 B2 B1 SC SC B1 SC SC SC SC SC SC PoP 12hr 60 40 20 20 30 20 20 10 10 Rain shwrs L C C C S S S S S C S S S S $$ WVZ502-210800- Petersburg WV 38.99N 79.15W Elev. 963 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 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 71 55 67 50 Temp 75 73 68 67 66 63 66 68 69 64 62 60 59 56 64 66 65 61 59 57 53 51 Dewpt 72 69 68 66 66 63 66 66 65 63 62 60 59 56 64 65 64 61 59 57 53 51 RH 90 87100 97100100100 93 87 97100100100100100 97 97100100100100100 Wind dir S W NW N NE NE NE NE NE NE E E E NE NE NE NE NE NE NE NE NE Wind spd 3 2 2 2 2 3 8 6 6 3 2 2 3 3 8 9 9 4 4 4 4 4 Clouds OV B1 SC B1 OV OV OV OV B2 OV OV OV OV B2 OV OV B2 OV OV OV OV OV PoP 12hr 30 80 100 100 90 QPF 12hr 0.04 0.41 0.27 0.58 0.22 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C S C C C L O O O O O O D D D D D D D D L Tstms S Obvis PF PF PF PF PF PF PF Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 61 48 60 46 66 45 70 47 74 Temp 58 58 53 49 57 56 49 48 63 58 50 46 67 61 50 48 71 63 Dewpt 57 54 53 49 55 53 49 47 51 49 46 45 52 52 49 48 56 56 PWind dir NE NE NE N N NW N NW N Wind char LT LT LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 70 70 50 20 5 5 10 5 5 Rain shwrs L L L L C S S $$ MDZ014-210800- Annapolis MD 38.99N 76.49W Elev. 7 ft 500 PM EDT Sun Sep 20 2026 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 75 63 70 60 Temp 82 76 72 70 66 67 73 75 74 70 66 65 64 65 69 70 69 65 63 62 61 60 Dewpt 69 71 72 70 66 64 64 64 62 62 65 65 64 63 64 64 62 60 62 59 58 57 RH 65 85100100100 90 73 69 66 76 97100100 93 84 81 78 84 97 90 90 90 Wind dir S S NW N N N NE NE NE E E E NE NE NE NE NE NE NE NE NE NE Wind spd 6 4 3 8 11 11 13 12 13 12 12 11 13 16 19 18 20 18 18 17 18 18 Clouds B2 B2 B2 B2 B1 B2 B2 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV B2 PoP 12hr 50 20 90 90 70 QPF 12hr 0.01 0 0.44 0.87 0.60 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S O O O O D D D D L L L L C Tstms S S S Heat index 85 Max heat 85 Coast Flood Y Y Y Y Y Date 09/23 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 68 57 69 56 70 57 72 58 74 Temp 68 66 60 59 67 65 59 58 68 66 59 59 71 67 60 60 73 69 Dewpt 59 58 56 56 58 56 54 52 54 53 52 52 55 55 54 54 57 57 PWind dir NE NE NE NE N N N N N Wind char BZ BZ BZ GN GN GN GN LT GN Avg clouds B2 B2 OV B2 B2 B2 B2 B1 SC B1 B1 SC SC B1 B1 B1 SC B1 PoP 12hr 50 30 20 20 20 20 20 10 20 Rain shwrs C C C C S S S S S S S S S S $$