FOUS51 KLWX 181605 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1205 PM EDT Sat Jul 18 2026 VAZ054-182000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1205 PM 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 88 70 86 Temp 95 88 83 80 79 77 77 81 84 86 83 75 73 71 72 79 84 85 81 Dewpt 73 73 72 74 73 72 71 68 66 63 62 63 62 62 62 62 63 64 64 RH 49 61 70 82 82 85 82 65 55 46 49 66 68 73 71 56 49 50 56 Wind dir SW SW SW SW SW W NW NW NW N N NE NE NE NE E SE SE SE Wind spd 14 17 11 10 9 9 10 11 11 10 9 6 5 8 8 6 6 10 12 Wind gust 25 Clouds B2 B2 B2 B1 B1 B1 B1 SC FW FW FW SC FW CL SC SC SC SC SC PoP 12hr 70 30 0 0 20 QPF 12hr 0.15 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C S S S Tstms C L C S Heat index 105 96 88 84 84 86 87 84 85 86 83 Max heat 105 103 84 86 88 85 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 72 89 74 87 68 83 67 86 Temp 74 74 85 83 76 76 84 80 70 70 80 78 69 70 84 80 Dewpt 70 73 73 72 75 74 71 66 63 61 58 59 60 61 60 61 PWind dir SE S SW W NW N N E Wind char GN GN BZ GN GN GN LT LT Avg clouds B1 B2 B2 B2 OV B2 B1 B1 SC SC FW SC FW FW FW SC PoP 12hr 40 80 90 50 20 10 10 5 Rain shwrs S C C D D L C C S S Tstms S S S L C C $$ MDZ013-182000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1205 PM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 73 87 67 86 Temp 95 90 84 79 77 75 75 81 85 87 82 74 70 68 69 78 84 85 80 Dewpt 74 73 75 75 73 72 71 69 67 64 64 64 62 61 61 61 63 64 66 RH 51 58 74 88 87 90 87 67 55 46 55 71 76 78 76 56 49 50 62 Wind dir SW W SW SW W W NW NW NW NW N N NE NE NE E E SE SE Wind spd 11 9 6 5 5 5 6 8 9 8 4 2 2 3 3 4 5 5 5 Clouds B2 B2 B1 B1 B1 B2 B1 FW FW FW FW FW FW FW FW SC FW FW SC PoP 12hr 80 30 0 0 5 QPF 12hr 0.20 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L C S Tstms L L C Heat index 106 98 9284 88 88 83 85 86 82 Max heat 106 102 86 88 88 85 86 Flood A A Heat Y Y Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 89 72 87 66 83 65 86 Temp 72 73 86 83 75 74 86 79 69 68 81 78 67 69 84 80 Dewpt 70 73 76 75 74 74 73 69 64 62 60 62 62 63 61 64 PWind dir SE S SW W NW N N E Wind char LT GN GN GN LT LT LT LT Avg clouds B1 B2 B2 B2 OV B2 B1 B1 SC SC FW FW FW FW FW SC PoP 12hr 30 80 90 50 20 10 10 5 Rain shwrs S C C D D L C C S S Tstms S S S L C C $$ MDZ011-182000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1205 PM 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 67 87 Temp 95 89 84 80 79 76 76 81 86 87 82 74 71 68 70 79 85 86 82 Dewpt 73 73 73 74 73 72 69 66 62 60 60 61 59 58 57 57 58 60 62 RH 49 59 70 82 82 87 79 60 45 40 47 64 66 70 63 47 40 42 51 Wind dir SW SW SW SW W W NW NW NW NW N N N NE NE E SE SE SE Wind spd 12 12 6 5 5 5 6 8 9 8 4 2 1 3 2 3 5 5 5 Clouds B2 B2 B1 B1 B2 B1 SC FW FW FW FW FW FW FW FW SC FW FW SC PoP 12hr 80 30 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 S Tstms L L C Heat index 105 97 90 84 83 86 87 82 86 83 Max heat 105 101 86 86 87 84 86 Flood A A Heat 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 90 75 88 68 84 67 87 Temp 74 75 88 82 76 77 86 82 70 70 82 80 69 70 85 82 Dewpt 69 72 72 72 74 72 70 66 61 58 56 58 59 59 57 60 PWind dir SE S SW W NW N N E Wind char LT GN GN GN LT LT LT LT Avg clouds B1 B2 B2 OV OV B2 B1 B1 SC SC FW FW FW FW FW SC PoP 12hr 30 80 90 50 20 10 10 5 Rain shwrs S C C D D L C C S S Tstms S S S L C C $$ WVZ052-182000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1205 PM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 71 85 62 85 Temp 91 88 83 78 76 73 73 79 83 85 79 70 66 64 67 76 83 85 80 Dewpt 71 71 72 70 70 69 68 65 62 60 60 60 60 59 59 59 61 61 64 RH 52 57 70 76 82 87 84 62 49 43 52 71 81 84 75 56 47 45 58 Wind dir W W W W W W NW NW NW NW N N N N N E SE SE SE Wind spd 11 11 8 8 6 5 9 9 9 8 5 3 0 0 0 3 4 5 8 Clouds B2 B1 B1 B2 B1 SC FW SC SC FW FW SC SC FW SC SC SC SC SC PoP 12hr 70 40 0 0 5 QPF 12hr 0.13 0.04 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C S Tstms C C C S Heat index 98 94 88 84 85 83 85 82 Max heat 98 96 83 84 85 83 85 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 88 68 84 60 81 59 84 Temp 70 72 84 81 73 72 82 77 64 65 79 76 63 65 82 79 Dewpt 67 70 71 71 71 71 67 62 59 58 54 56 57 58 57 58 PWind dir SE S SW W NW N N E Wind char LT GN GN GN GN LT LT LT Avg clouds B1 B2 B2 B2 OV B1 B1 B1 FW FW FW FW FW FW FW SC PoP 12hr 20 80 80 30 10 5 5 5 Rain shwrs S C D D C C C Tstms C C C $$ VAZ506-182000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1205 PM 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 86 66 85 Temp 93 87 82 78 77 74 75 80 84 84 80 73 70 67 69 78 83 84 80 Dewpt 74 75 76 74 73 72 72 71 69 67 66 65 63 62 63 65 67 68 68 RH 54 68 82 88 87 93 90 74 61 57 62 76 78 84 81 64 59 59 67 Wind dir SW SW SW SW SW W NW NW NW N N N N N NE E SE SE SE Wind spd 11 10 6 4 4 5 8 9 9 8 4 2 1 2 3 3 4 5 6 Clouds B2 B2 B1 B1 B2 B2 SC FW FW FW FW FW FW FW FW SC FW SC B1 PoP 12hr 70 20 0 0 10 QPF 12hr 0.20 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C S S Tstms L C S S Heat index 103 96 89 83 88 87 82 86 87 83 Max heat 103 102 88 89 86 88 Flood A A 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 88 71 86 63 82 62 85 Temp 71 72 85 81 74 74 85 78 67 67 80 77 65 67 8379 Dewpt 70 72 76 75 74 74 73 68 63 62 61 62 61 62 63 64 PWind dir SE S SW W NW N N NE Wind char LT GN GN GN GN LT LT LT Avg clouds B1 B2 B2 B2 OV B2 B1 B1 SC SC FW FW FW FW FW SC PoP 12hr 40 80 90 40 20 10 10 5 Rain shwrs S C C D D L C C S S Tstms S L C C $$ VAZ037-182000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1205 PM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 73 89 68 85 Temp 94 88 83 79 77 74 75 85 87 87 81 75 72 69 70 79 83 85 80 Dewpt 71 70 72 72 71 71 72 69 69 68 69 68 66 64 63 64 65 66 68 RH 47 55 70 79 82 90 90 59 55 53 67 79 81 84 78 60 55 53 67 Wind dir SW SW SW SW SW SW W N N N NE N N N NE E SE SE SE Wind spd 11 10 9 6 6 4 1 3 4 4 4 2 0 3 4 4 4 5 5 Clouds B1 B2 B1 SC B2 B1 SC SC B1 SC SC B1 B1 SC B1 SC SC SC B1 PoP 12hr 30 10 50 20 20 QPF 12hr 0.01 0 0.05 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C S S S C Tstms C C S S S S Heat index 101 93 88 89 91 91 84 85 87 83 Max heat 101 100 85 91 92 85 87 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 89 71 87 64 83 63 85 Temp 72 71 86 83 75 73 85 80 67 66 81 77 65 66 83 79 Dewpt 71 71 72 72 73 72 68 65 62 60 57 58 58 59 59 61 PWind dir S S SW W NW NE N E Wind char LT GN GN GN LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B1 B1 SC FW SC FW FW FW FW SC PoP 12hr 40 70 80 40 20 10 10 10 Rain shwrs C C C L D L C C S Tstms S C C C $$ MDZ003-182000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1205 PM 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 84 61 84 Temp 89 85 81 77 75 71 72 77 82 84 79 69 65 63 66 76 82 84 80 Dewpt 71 72 74 72 71 69 68 66 63 61 62 61 60 58 59 60 62 63 65 RH 56 65 79 85 87 93 87 69 53 46 56 76 84 84 78 58 51 49 60 Wind dir W SW SW W W NW NW N N N N N NE NE NE SE S SE SE Wind spd 11 10 8 6 5 5 9 8 8 8 4 3 2 3 2 2 4 5 5 Clouds B2 B1 B1 B2 B1 SC SC SC FW FW FW FW SC FW FW SC SC SC SC PoP 12hr 70 40 0 0 5 QPF 12hr 0.12 0.04 0 0 0 Snow 12hr00-00 00-00 00-00 Rain shwrs L S C C Tstms C S C C Heat index 95 91 86 83 84 83 85 82 Max heat 95 94 83 84 83 85 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 81 60 84 Temp 70 71 83 80 73 72 82 77 64 64 79 76 63 65 82 79 Dewpt 67 70 72 73 72 71 68 64 60 59 57 58 58 59 59 61 PWind dir SE S SW W NW N N E Wind char LT GN LT GN LT LT LT LT Avg clouds B1 B2 B2 B2 OV B1 SC B1 FW FW FW FW FW FW FW SC PoP 12hr 30 80 80 30 10 5 5 5 Rain shwrs C C D D C S C Tstms C S C $$ MDZ017-182000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1205 PM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 77 90 73 88 Temp 95 92 83 79 78 78 81 86 88 88 83 78 76 74 76 83 86 87 82 Dewpt 75 74 75 75 75 75 74 72 70 68 66 66 66 66 66 66 65 66 68 RH 53 56 77 88 91 91 79 63 55 52 57 67 71 76 71 57 50 50 63 Wind dir S SW SW SW SW W NW N N NE NE NE NE NE NE E SE SE SE Wind spd 12 12 9 9 9 8 8 9 9 9 4 5 4 5 6 6 6 9 9 Clouds B1 B2 B2 B1 B1 B1 SC SC FW FW SC SC FW CL SC FW SC FW B1 PoP 12hr 60 50 10 5 10 QPF 12hr 0.20 0.08 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C Tstms L C S S Heat index 107102 90 86 92 93 92 85 85 88 89 85 Max heat 107 107 87 86 94 93 82 88 89 Heat Y Y Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 93 76 91 71 85 70 88 Temp 76 78 90 86 79 80 90 82 74 74 83 80 72 74 86 81 Dewpt 72 75 76 75 76 76 75 72 67 65 62 61 64 65 63 64 PWind dir S S SW SW NW N N NE Wind char LT GN GN GN GN GN LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC FW FW FW PoP 12hr 60 80 80 70 40 20 10 10 Rain shwrs C L L D D L L L C S S S Tstms S C S L C S C S $$ WVZ502-182000- Petersburg WV 38.99N 79.15W Elev. 963 ft 1205 PM 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 0609 12 15 18 21 00 Max/Min 91 68 86 61 87 Temp 90 86 80 75 73 70 70 79 84 84 77 68 64 62 64 77 85 86 80 Dewpt 70 70 71 70 69 68 69 69 67 64 65 63 61 60 62 65 66 66 68 RH 52 59 74 84 87 93 97 72 57 51 67 84 90 93 93 67 53 51 67 Wind dir W W E SE SE SE E N NW NW N N N N N S S S SE Wind spd 10 10 8 5 4 1 1 3 5 6 4 1 0 0 0 1 2 4 2 Wind gust 19 16 Clouds B2 B2 B2 B2 B1 B1 SC FW FW FW FW FW FW SC B1 SC SC SC B1 PoP 12hr 60 50 10 0 10 QPF 12hr 0.02 0.04 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C C S Tstms C C C S Heat index 96 91 83 87 85 87 88 83 Max heat 99 96 87 88 87 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 66 90 66 83 57 81 56 85 Temp 68 69 86 80 71 68 82 73 60 60 79 74 59 61 83 78 Dewpt 66 68 72 71 68 68 68 64 60 59 58 60 57 59 61 64 PWind dir S SW SW W NW N NW SE Wind char LT LT LT GN LT LT LT LT Avg clouds B1 B2 B2 B2 OV B1 B1 B1 FW SC FW FW FW FW SC SC PoP 12hr 20 70 90 30 10 5 0 5 Rain shwrs S C L D C S C Tstms S C S C $$ MDZ014-182000- Annapolis MD 38.99N 76.49W Elev. 7 ft 1205 PM EDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 76 88 71 85 Temp 94 91 85 80 79 77 78 84 87 88 84 77 74 72 73 81 85 85 83 Dewpt 76 74 75 75 75 73 71 68 66 64 64 64 64 63 62 61 61 62 65 RH 56 58 72 85 88 87 79 59 50 45 51 64 71 73 68 51 45 46 55 Wind dir S SW SW SW SW W NW N N N N NE NE NE NE E E SE S Wind spd 12 11 9 6 6 6 8 10 10 9 6 3 2 5 6 6 6 6 6 Clouds B2 B2 B1 B1 B1 B2 SC SC FW FW FW FW FW CL FW SC FW FW SC PoP 12hr 70 40 0 0 5 QPF 12hr 0.19 0.04 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C S Tstms C L C Heat index 107101 94 85 87 89 89 85 82 85 86 85 Max heat 107 105 89 89 90 82 85 86 Flood A A Heat Y Y Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max73 88 75 88 70 84 70 86 Temp 75 77 88 84 77 78 88 82 72 72 82 81 72 73 85 83 Dewpt 72 73 76 75 75 74 74 70 66 62 59 61 64 63 61 63 PWind dir S S SW W NW N N NE Wind char LT GN GN GN GN GN LT LT Avg clouds B1 B2 B2 B2 OV B2 B2 B2 SC SC FW FW FW FW FW FW PoP 12hr 40 80 90 60 20 10 10 5 Rain shwrs S C L D D L C L S S Tstms S S S L C C $$