FOUS51 KLWX 181329 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 928 AM EDT Sat Jul 18 2026 VAZ054-182000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 95 76 89 71 87 Temp 88 95 89 84 79 78 77 77 81 86 88 83 76 73 71 73 79 84 85 81 Dewpt 74 73 73 73 73 72 72 72 69 67 64 63 64 63 62 62 62 63 65 65 RH 63 49 59 70 82 82 85 85 67 53 45 51 66 71 73 68 56 49 51 58 Wind dir S SW SW SW W W W NW N N N N NE NE NE NE E SE SE SE Wind spd 9 14 17 13 10 9 9 10 11 10 10 9 6 5 8 9 8 9 11 12 Wind gust 25 Clouds B2 B2 B2 B2 B1 B2 B1 SC SC FW FW FW FW FW SC SC SC B1 B1 B1 PoP 12hr 70 40 0 5 30 QPF 12hr 0.15 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C C C C Tstms C L C S S C Obvis K Heat index 97105 97 90 84 89 89 84 85 87 83 Max heat 105 103 86 89 89 85 87 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 72 90 74 87 68 81 67 84 Temp 74 74 86 83 76 75 84 81 71 69 79 77 68 69 82 80 Dewpt 70 72 73 72 73 71 67 62 60 60 56 57 59 60 58 60 PWind dir S S SW W NW NW NW NE Wind char GN GN GN GN GN GN LT LT Avg clouds B1 B1 B2 B2 B2 B2 B1 B1 SC FW FW FW FW FW SC SC PoP 12hr 30 70 80 40 20 10 10 10 Rain shwrs C S S L D C C C S S Tstms C S C C C $$ MDZ013-182000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 74 88 67 86 Temp 89 95 88 84 78 77 76 76 82 86 86 81 74 70 68 70 79 84 86 81 Dewpt 75 74 73 73 73 72 72 72 70 67 65 65 64 63 61 62 61 63 65 66 RH 64 51 61 70 85 85 87 87 67 53 50 58 71 78 78 76 54 49 50 60 Wind dir SW SW W SW W W W NW N N N N NE NE NE NE E SE SE SE Wind spd 8 11 9 8 6 5 5 6 8 8 6 4 2 2 4 4 5 5 6 5 Clouds B2 B2 B2 B2 B1 B2 B1 SC SC FW SC FW FW FW FW FW FW SC SC B1 PoP 12hr 80 40 0 0 10 QPF 12hr 0.20 0.05 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L C C C Tstms L L C CC Obvis K Heat index 99106 96 90 86 89 88 83 85 88 83 Max heat 106 102 86 89 90 85 88 Heat Y Y Y Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 90 72 88 66 83 66 85 Temp 72 73 87 83 75 74 85 81 70 69 81 79 69 69 83 80 Dewpt 70 73 76 75 74 73 71 68 63 63 61 62 62 63 62 65 PWind dir S S SW W NW NW N E Wind char LT GN GN GN LT LT LT LT Avg clouds B1 B2 B2 B2 OV B2 B1 B1 SC FW FW FW FW FW SC SC PoP 12hr 30 70 80 40 20 5 10 10 Rain shwrs C C S L D C C C S S Tstms C S S C C C $$ MDZ011-182000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 95 75 88 69 87 Temp 90 95 88 84 79 78 76 76 82 86 87 83 75 70 69 70 79 84 86 82 Dewpt 73 73 73 72 72 72 72 69 66 63 61 61 61 60 58 57 57 58 60 63 RH 58 49 61 67 79 82 87 79 58 46 42 47 62 71 68 63 47 41 42 53 Wind dir S SW SW SW W W W NW N N N N NE NE NE NE E SE SE SE Wind spd 8 12 12 10 6 5 5 6 8 9 8 4 2 2 3 3 4 5 6 5 Clouds B2 B2 B2 B2 B1 B2 B1 FW SC FW SC FW CL FW FW FW FW SC SC B1 PoP 12hr 80 40 0 0 5 QPF 12hr 0.21 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L C C C Tstms L L C C C Obvis K Heat index 98105 96 90 84 87 87 83 84 86 83 Max heat 105 101 85 87 88 84 86 Heat Y Y Y Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 73 91 74 88 66 83 66 85 Temp 74 75 87 83 75 75 85 81 70 68 80 79 68 68 82 80 Dewpt 69 71 73 72 73 70 66 62 59 57 54 57 58 59 57 59 PWind dir S S SW W NW NW N E Wind char LT GN LT GN LT LT LT LT Avg clouds B1 B2 B2 B2 OV B2 B1 B1 FW FW FW SC FW FW SC SC PoP 12hr 30 70 80 30 20 5 5 10 Rain shwrs C C S L D C C C S Tstms C C S C C C $$ WVZ052-182000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 1114 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 71 86 62 85 Temp 88 91 88 82 77 75 73 74 79 84 85 79 70 66 63 67 76 83 85 80 Dewpt 71 71 71 71 70 69 69 69 66 63 60 60 60 60 59 59 59 62 63 65 RH 57 52 57 69 79 82 87 84 64 49 43 52 71 81 87 75 56 49 48 60 Wind dir SW W W W W W NW NW N N N N N N N N SE SE SE SE Wind spd 8 11 11 8 8 5 5 9 9 8 9 4 0 0 1 0 4 5 6 9 Clouds B1 B2 B1 B1 B1 B2 SC CL SC SC FW SC FW FW SC SC SC SC SC SC PoP 12hr 70 40 0 0 10 QPF 12hr 0.13 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L C S C S Tstms S C C S S S Obvis K Heat index 94 98 94 86 85 85 84 86 82 Max heat 98 96 85 86 84 86 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 87 68 84 60 82 60 84 Temp 70 72 84 81 72 71 83 78 66 65 80 76 64 65 82 79 Dewpt 68 70 72 71 71 69 64 61 60 58 55 57 58 58 58 59 PWind dir S S SW W NW NW NW E Wind char LT GN LT GN LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B1 SC B1 FW FW FW SC FW FW SC SC PoP 12hr 20 70 80 30 10 5 5 5 Rain shwrs S S C L D C S C Tstms S S C C S $$ VAZ506-182000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 93 73 87 66 86 Temp 87 93 87 83 77 76 74 75 81 85 85 81 73 69 67 69 78 84 85 80 Dewpt 75 74 75 73 72 71 72 72 72 70 68 66 65 64 62 63 65 67 69 69 RH 68 54 68 72 85 85 93 90 74 61 57 60 76 84 84 81 64 57 59 69 Wind dir SW SW SW SW W W W NW N N N NE NE N NE NE E SE SE SE Wind spd 9 11 10 5 4 4 5 8 9 9 8 4 2 1 3 3 4 5 6 6 Clouds B2 B2 B2 B2 SC OV B1 FW SC FW SC FW FW SC SC SC SC B1 B1 SC PoP 12hr 70 30 0 5 30 QPF 12hr 0.20 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C C C C Tstms L C C S S C Obvis K Heat index 96103 96 89 85 90 88 83 87 89 83 Max heat 103 102 84 90 91 87 89 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 1800 06 12 18 00 Min/Max 69 89 71 86 63 81 63 84 Temp 71 72 86 82 74 73 84 80 68 67 79 77 66 67 82 79 Dewpt 70 72 77 75 73 72 72 67 63 62 61 62 61 63 64 65 PWind dir S S SW W NW NW N N Wind char LT GN GN GN GN LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 SC B1 FW FW FW FW FW FW FW SC PoP 12hr 30 70 80 30 20 5 5 10 Rain shwrs C S L D C S C S S Tstms C S C C C $$ VAZ037-182000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 73 90 68 86 Temp 89 94 91 84 78 77 74 75 85 88 87 81 75 72 70 69 78 83 85 80 Dewpt 72 71 70 72 71 70 71 71 69 68 68 69 69 67 65 65 65 66 67 68 RH 57 47 50 67 79 79 90 87 59 52 53 67 82 84 84 87 64 57 55 67 Wind dir SW SW SW SW SW SW SW NW N N NE NE N NE N NE E SE SE SE Wind spd 6 11 10 9 6 6 5 3 4 4 4 4 0 1 4 5 4 4 5 5 Clouds B1 B1 B2 B1 SC B1 B1 SC SC B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 20 40 20 40 QPF 12hr 0.01 0 0.03 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C S S S S S C C C C C Tstms C C S C S C C C Obvis K Heat index 96101 97 90 89 92 91 84 85 88 83 Max heat 101 100 85 92 92 85 88 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 90 71 88 64 84 64 86 Temp 72 70 89 83 75 73 86 82 68 66 82 78 66 67 84 80 Dewpt 71 70 71 72 72 71 67 64 62 60 56 58 59 59 59 62 PWind dir S SW SW W NW N NE SE Wind char LT GN GN GN LT LT LT LT Avg clouds B1 B2 B1 B2 B2 B2 B1 B1 FW FW FW FW FW SC FW SC PoP 12hr 30 60 70 40 20 10 10 10 Rain shwrs C S S L L C C C S S Tstms C S C C S $$ MDZ003-182000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 89 70 85 62 85 Temp 86 89 86 81 75 74 71 72 78 83 85 79 70 65 62 67 76 82 85 80 Dewpt 71 71 72 72 70 69 69 69 66 64 61 62 61 60 58 59 60 63 64 66 RH 61 56 63 74 84 84 93 90 67 53 45 56 73 84 87 75 58 53 50 62 Wind dir SW W SW W NW W NW N N N N N NE NE NE NE SE S SE SE Wind spd 8 11 10 8 6 4 4 8 8 8 8 4 3 3 4 3 3 4 6 6 Clouds B2 B2 B1 B1 B2 B2 SC SC SC FW SC FW FW FW FW FW SC SC SC SC PoP 12hr 70 50 0 0 5 QPF 12hr 0.13 0.10 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L S C C Tstms C C S C S Obvis K Heat index 91 95 92 85 84 85 83 86 82 Max heat 95 94 84 85 83 86 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 87 68 84 60 82 61 84 Temp 71 71 83 80 72 71 82 78 65 65 79 76 65 66 82 79 Dewpt 67 70 73 72 71 69 66 63 60 60 58 60 59 60 60 62 PWind dir SE S SW W NW NW N SW Wind char LT GN LT GN LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 SC B1 FW FW FW SC FW FW SC SC PoP 12hr 20 70 80 30 10 5 5 5 Rain shwrs S C L D C S C Tstms S C C C $$ MDZ017-182000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 77 89 74 87 Temp 90 95 92 85 79 78 78 81 85 86 88 83 78 76 74 77 82 85 86 81 Dewpt 77 75 74 75 74 74 75 75 72 71 68 66 66 66 66 67 66 66 67 68 RH 66 53 56 72 85 88 91 82 65 61 52 57 67 71 76 71 58 53 53 65 Wind dir S S SW SW SW SW W NW N N N NE E E NE NE E SE SE SE Wind spd 10 12 12 9 8 8 8 6 9 9 8 5 5 4 5 6 6 6 9 9 Clouds B1 B1 B2 B2 B1 SC SC SC FW FW FW FW FW FW FW FW SC SC SC B1 PoP 12hr 60 50 10 5 30 QPF 12hr 0.20 0.08 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C C C Tstms L C C S C Obvis K Heat index 103107102 94 87 91 91 92 85 84 87 89 84 Max heat 107 107 87 87 92 92 82 87 89 Heat Y Y Y Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 94 76 87 70 81 70 83 Temp 76 79 91 82 78 79 84 80 73 72 79 76 72 73 80 78 Dewpt 72 75 76 75 75 74 71 69 64 63 60 60 63 65 62 63 PWind dir S SW SW W NW N N E Wind char LT GN GN GN GN GN LT LT Avg clouds B1 B2 B2 B2 B2 B2 B1 B2 B1 SC FW FW FW FW FW SC PoP 12hr 60 70 70 60 30 20 10 20 Rain shwrs C L S L L C C L C S S SS Tstms C C S C C S C S S $$ WVZ502-182000- Petersburg WV 38.99N 79.15W Elev. 963 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 91 68 87 61 87 Temp 89 90 87 80 74 72 70 70 79 85 86 79 68 64 61 64 77 84 86 80 Dewpt 71 70 70 72 70 67 68 69 70 68 65 65 64 62 60 62 65 67 67 69 RH 56 52 57 77 87 84 93 97 74 57 50 62 87 93 97 93 67 57 53 69 Wind dir S W W E W W SW N N N NW N N N N N SE SE S SE Wind spd 6 10 10 8 5 3 1 1 3 5 6 4 1 0 0 0 1 3 3 2 Wind gust 20 Clouds B1 B2 B2 B1 B2 B2 B1 B1 FW FW SC FW FW SC SC SC SC SC SC B1 PoP 12hr 60 60 10 5 20 QPF 12hr 0.02 0.07 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L C S L S S S Tstms S C C S S S S Heat index 95 96 92 84 88 88 87 89 83 Max heat 98 96 88 88 87 89 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 89 66 84 56 81 57 86 Temp 68 69 86 80 70 68 81 76 62 60 79 74 60 61 83 77 Dewpt 66 68 72 71 68 68 66 63 60 59 58 60 58 59 62 64 PWind dir S SW SW W NW NW NW E Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B2 B1 B1 SC FW SC FW FW FW FW SC SC PoP 12hr 10 60 80 20 10 10 5 10 Rain shwrs C L D C S S Tstms S C C S $$ MDZ014-182000- Annapolis MD 38.99N 76.49W Elev. 7 ft 928 AM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 76 89 72 87 Temp 87 94 89 85 78 79 77 78 85 88 88 84 77 74 72 75 81 87 87 83 Dewpt 77 76 74 74 73 73 73 72 69 67 65 64 65 64 63 62 62 62 64 66 RH 72 56 61 70 85 82 87 82 59 50 47 51 67 71 73 64 53 43 46 57 Wind dir S S SW SW W W W NW N N N NE NE NE NE NE E E S S Wind spd 10 12 11 9 6 5 6 8 10 10 9 6 3 3 6 6 6 6 8 8 Clouds B2 B2 B2 B2 B1 B2 B1 SC FW FW FW FW CL FW FW FW FW SC FW B1 PoP 12hr 70 50 0 0 10 QPF 12hr 0.19 0.06 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C C Tstms C L C C C Obvis K Heat index 99107 98 93 89 91 90 85 82 87 88 85 Max heat 107 105 89 91 92 82 87 88 Heat Y Y Y Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 89 75 89 69 84 69 85 Temp 75 77 89 85 77 78 88 83 72 71 82 80 72 72 84 80 Dewpt 72 73 76 76 74 73 72 68 63 62 60 62 63 64 62 64 PWind dir S S SW W NW NW NW E Wind char LT GN GN GN LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B1 B1 SC FW FW FW FW FW SC SC PoP 12hr 40 70 80 40 20 10 10 10 Rain shwrs C C S L D C C C S S Tstms C C S C C S C S $$