Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
462 FOUS51 KLWX 162103 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 503 PM EDT Sat May 16 2026 VAZ054-170800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 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 88 66 92 71 Temp 78 71 68 65 68 77 84 86 82 73 69 66 69 81 90 91 85 78 73 71 73 Dewpt 55 58 60 59 62 64 63 63 65 64 63 63 65 66 64 63 64 64 64 64 64 RH 45 63 76 81 81 64 49 46 56 73 81 90 87 60 42 40 50 62 73 79 73 Wind dir SW SW SW SW W NW W W S S S N N S S S S S S SW SW Wind spd 12 10 8 5 4 6 6 8 6 5 3 0 0 6 10 14 13 11 11 11 11 Clouds B2 B2 FW B1 SC B1 B1 SC B1 SC SC FW SC FW CL FW FW FW FW FW FW PoP 12hr 30 20 10 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S Tstms S Heat index 85 87 84 83 91 92 86 Max heat 80 85 87 91 92 84 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 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 94 73 94 66 73 57 68 56 69 Temp 92 88 77 75 92 85 73 67 70 68 61 59 65 64 58 58 66 66 Dewpt 60 60 60 61 60 65 64 57 54 52 52 51 52 52 53 54 55 54 PWind dir SW SW SW NW N NE NE E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds FW SC SC FW FW B1 B2 B1 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 0 0 50 60 60 40 60 50 50 Rain shwrs C L C L L C C L C C C C C Tstms C C $$ MDZ013-170800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 88 64 92 69 Temp 78 70 68 64 68 80 86 86 79 72 68 66 69 82 90 91 84 75 72 70 73 Dewpt 58 59 61 60 64 65 64 65 66 65 63 62 65 66 66 66 66 65 64 63 65 RH 50 68 78 87 87 60 48 50 64 79 84 87 87 58 45 44 55 71 76 78 76 Wind dir S SW SW W W NW W SW S S SW N N SE S S S S S SW SW Wind spd 6 4 3 2 2 3 3 4 3 1 1 0 0 3 6 9 8 5 4 4 4 Clouds B1 B2 B1 SC B1 SC B1 SC B1 B1 SC SC SC FW CL FW FW FW FW FW FW PoP 12hr 30 10 10 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C Heat index 82 87 88 84 93 94 86 Max heat 82 87 89 93 95 83 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 96 72 96 63 74 55 69 53 70 Temp 94 88 77 75 94 86 72 65 71 68 59 58 67 64 58 57 67 65 Dewpt 62 64 60 61 62 68 63 56 53 53 51 50 52 53 53 54 55 55 PWind dir SW SW SW NW N NE E E E Wind char LT LT LT LT LT LT GN LT GN Avg clouds FW SC SC SC FW B2 B2 B1 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 5 5 60 60 60 40 50 50 50 Rain shwrs L L C L C C C C C C C C C Tstms C S $$ MDZ011-170800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 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 88 66 91 70 Temp 78 70 68 65 68 80 86 87 82 72 69 66 69 82 89 91 84 75 72 70 74 Dewpt 55 58 60 61 63 64 62 62 65 65 63 62 64 65 64 64 65 65 63 64 64 RH 45 66 76 87 84 58 45 43 56 79 81 87 84 56 44 41 53 71 73 81 71 Wind dir S SW W W W NW SW S S S N N N SE S S S S S S SW Wind spd 5 3 3 2 2 2 3 3 2 1 0 0 0 3 6 9 6 4 3 3 3 Clouds B2 B2 B1 SC SC SC SC SC B1 SC SC SC SC FW CL FW FW FW FW FW FW PoP 12hr 30 10 10 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C Heat index 82 86 87 84 84 90 93 86 Max heat 81 86 87 90 93 83 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 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 95 73 96 65 74 57 69 56 70 Temp 93 89 77 76 94 85 72 65 71 69 60 59 67 65 58 58 67 66 Dewpt 60 63 60 60 60 67 62 54 50 50 49 47 48 49 51 51 51 52 PWind dir SW SW SW NW N NE E E E Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW SC SC SC FW B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 5 5 60 60 50 40 50 50 50 Rain shwrs L L C C C C C C C C C C C Tstms C S $$ WVZ052-170800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 60 87 62 93 68 Temp 73 68 64 61 66 77 85 86 81 70 66 63 68 83 92 93 86 77 72 68 73 Dewpt 60 61 59 59 61 63 62 62 64 63 61 59 62 64 62 61 61 61 60 59 60 RH 64 78 84 93 84 62 46 45 56 78 84 87 81 53 37 35 43 58 66 73 64 Wind dir SW W SW N N W W W N N N N N S S S S S S SW SW Wind spd 6 4 1 0 0 3 3 4 0 0 0 0 0 3 8 11 9 9 6 3 2 Clouds B2 B1 FW SC SC SC SC B1 SC FW B1 B1 SC FW SC SC SC SC SC SC SC PoP 12hr 10 30 10 20 20 QPF 12hr 0 0.01 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S S S Tstms S C C S S Heat index 86 86 83 84 93 93 86 Max heat 81 86 86 93 94 83 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 96 69 94 61 73 52 68 52 69 Temp 94 89 74 75 92 83 69 62 70 68 58 56 66 65 58 56 67 66 Dewpt 58 60 60 60 61 64 59 51 48 46 46 45 48 49 51 51 52 52 PWind dir SW SW W NW N NE E E E Wind char LT LT GN GN GN LT LT LT LT Avg clouds SC SC SC FW FW B2 B1 B1 B1 B1 B1 B1 B2 B1 B1 B2 B2 B2 PoP 12hr 20 5 70 50 50 40 50 50 50 Rain shwrs S L C C C C C C C C C C C C Tstms S C S $$ VAZ506-170800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 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 62 88 64 94 70 Temp 78 71 67 63 67 79 86 87 82 73 68 66 69 84 92 94 88 80 74 71 73 Dewpt 59 61 62 61 63 65 65 65 66 64 64 63 65 67 65 64 64 63 63 62 64 RH 52 71 84 93 87 62 50 48 58 73 87 90 87 57 41 37 45 56 69 73 73 Wind dir SW SW SW SW W NW W W S S N N N S S S S S S S SW Wind spd 8 4 2 1 1 3 4 3 2 1 0 0 0 3 8 10 9 8 8 8 5 Clouds B2 B1 SC B1 SC B1 SC SC B1 SC SC SC SC FW CL FW FW FW FW FW FW PoP 12hr 20 20 10 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S Heat index 88 89 84 87 94 96 89 81 Max heat 82 88 89 94 96 87 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 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 96 71 96 63 73 54 68 53 70 Temp 94 90 78 74 93 85 72 64 70 68 60 57 66 65 58 57 67 67 Dewpt 61 60 60 61 62 67 64 57 55 53 52 51 53 54 54 55 57 56 PWind dir SW SW SW NW N NE NE E E Wind char GN GN LT GN GN LT LT LT LT Avg clouds FW SC SC FW FW B2 B2 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 5 0 60 60 60 40 50 50 50 Rain shwrs L L C L C C C C C C C C C Tstms C C $$ VAZ037-170800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 60 90 63 93 66 Temp 78 69 65 61 66 81 88 87 79 71 67 64 68 84 92 93 86 77 71 67 71 Dewpt 56 57 57 56 60 62 61 62 64 63 63 60 64 65 61 59 61 61 61 59 62 RH 47 66 75 84 81 53 40 43 60 76 87 87 87 53 36 32 43 58 71 75 73 Wind dir SW SW SW S N SW SW W N N N N N S S S S S SW SW SW Wind spd 9 5 3 3 0 3 4 3 0 0 0 0 0 4 9 11 8 6 6 5 4 Clouds B2 B1 SC SC SC SC SC B1 FW SC FW SC SC CL CL CL FW FW FW FW FW PoP 12hr 10 30 10 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C Tstms S C Heat index 82 88 87 86 92 86 Max heat 82 88 89 92 93 83 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 95 68 95 63 73 54 66 53 69 Temp 95 88 74 72 93 85 72 66 71 67 60 57 64 63 59 56 67 67 Dewpt 57 57 57 60 59 64 66 61 58 54 53 51 52 53 55 54 56 56 PWind dir SW SW SW NW NE NE NE NE NE Wind char GN LT GN LT LT LT GN LT LT Avg clouds FW FW FW FW FW B1 B1 B1 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 5 0 50 50 70 50 60 50 50 Rain shwrs C C C L L C C C L C C C C Tstms C C C S $$ MDZ003-170800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 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 60 86 63 92 68 Temp 74 66 63 61 65 76 83 85 80 71 67 63 69 82 90 92 86 77 72 68 72 Dewpt 62 62 61 60 63 65 65 65 66 64 62 61 63 66 65 65 64 63 62 61 62 RH 66 87 93 97 93 69 55 51 62 79 84 93 81 58 44 41 48 62 71 78 71 Wind dir SW SW SW S SW W SW W S S S S S S S S S S S S S Wind spd 6 4 2 2 2 4 4 4 2 1 1 1 1 4 6 10 6 8 5 4 4 Clouds OV B1 SC SC B1 SC B1 SC B1 FW SC SC SC FW SC SC SC SC SC FW SC PoP 12hr 10 30 10 20 20 QPF 12hr 0 0.05 0 0.08 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S S Tstms S S S S S Heat index 85 87 82 84 92 94 87 Max heat 80 85 87 92 94 84 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 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 95 69 93 60 72 52 68 52 69 Temp 93 88 73 74 90 82 68 61 69 68 57 56 66 65 57 56 66 66 Dewpt 63 63 62 62 65 65 59 51 50 49 47 46 50 51 51 51 54 54 PWind dir SW SW W NW N NE E E E Wind char LT LT GN GN GN LT LT LT LT Avg clouds SC SC SC SC FW B2 B1 B1 B1 B1 B1 B1 B2 B1 B1 B2 B2 B2 PoP 12hr 10 5 80 40 40 30 50 50 50 Rain shwrs D C C C C C C C C C C C C Tstms C S $$ MDZ017-170800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 90 68 93 72 Temp 73 72 71 68 72 82 87 85 78 73 71 69 74 86 91 88 80 78 76 73 76 Dewpt 57 55 58 57 59 62 64 64 63 62 64 64 66 67 67 66 65 64 66 65 65 RH 57 55 63 68 64 51 46 50 60 68 79 84 76 53 45 48 60 62 71 76 69 Wind dir S SW SW SW W N E SE S S S S SW S S SE S S S S SW Wind spd 9 9 9 6 4 2 5 6 4 4 3 3 2 3 9 11 10 8 8 8 8 Clouds SC B1 SC SC SC B1 SC B1 SC SC SC SC SC FW FW CL CL FW CL FW FW PoP 12hr 20 30 20 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C Tstms S Heat index 83 88 86 89 94 90 82 Max heat 88 89 94 94 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 97 72 98 66 73 57 70 56 73 Temp 95 84 78 78 95 87 76 70 73 68 64 63 69 66 62 62 70 67 Dewpt 64 62 64 64 64 64 66 61 57 56 56 54 54 54 56 57 58 57 PWind dir S S SW W N NE NE NE NE Wind char GN GN GN LT GN LT GN GN GN Avg clouds FW FW FW FW FW B1 B1 B1 B1 B2 B1 B2 B2 B2 B1 B2 B2 B2 PoP 12hr 0 0 30 50 60 60 60 50 50 Rain shwrs C C C C L C L L C C C C C Tstms S C S S $$ WVZ502-170800- Petersburg WV 38.99N 79.15W Elev. 963 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 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 59 89 63 97 67 Temp 73 66 63 61 64 77 84 88 83 70 66 64 69 87 94 96 89 76 71 67 72 Dewpt 59 58 58 57 60 62 61 60 62 60 58 57 59 60 59 58 60 59 58 56 58 RH 62 75 84 87 87 60 46 39 49 71 75 78 70 40 31 28 38 56 63 68 61 Wind dir E E SE SE SE W W NW SE SW SW SW SW SW S SW S S SW SW SW Wind spd 5 4 3 2 1 2 3 3 1 1 2 2 1 1 3 8 4 4 4 3 2 Wind gust 16 Clouds B2 B2 B1 B1 B1 B1 B1 SC FW FW SC SC SC FW FW FW SC SC SC SC FW PoP 12hr 10 40 5 20 20 QPF 12hr 0 0 0 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S S Tstms C S S S S Heat index 84 88 84 87 89 Max heat 80 84 89 93 95 85 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 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 96 68 92 60 75 52 71 53 73 Temp 94 90 72 73 89 84 69 62 72 70 59 55 67 67 58 56 69 70 Dewpt 59 60 58 59 62 63 61 55 54 50 49 48 52 52 53 52 55 55 PWind dir SW SW W NW N NE E SE E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC B2 B1 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 10 0 70 60 60 40 60 50 50 Rain shwrs S L C L L L C C L L C C C C Tstms S C S $$ MDZ014-170800- Annapolis MD 38.99N 76.49W Elev. 7 ft 503 PM EDT Sat May 16 2026 Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 84 65 87 69 Temp 73 69 68 66 69 81 84 83 76 71 69 67 70 83 87 85 78 73 72 70 74 Dewpt 57 59 60 60 62 64 63 63 64 64 63 63 64 65 64 64 64 65 64 64 64 RH 57 70 76 81 78 56 49 51 66 79 81 87 81 55 46 50 62 76 76 81 71 Wind dir S SW SW W W N SE S S N N N N S S S S S S S SW Wind spd 10 6 4 3 2 0 5 5 4 0 0 0 0 3 8 11 11 8 8 6 6 Clouds B1 B2 SC SC SC SC SC SC B1 SC SC SC FW FW CL FW FW FW FW FW FW PoP 12hr 30 10 10 5 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C Heat index 83 85 84 85 88 86 Max heat 85 85 88 88 Date 05/19 Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 72 93 64 73 57 70 56 71 Temp 90 81 77 75 91 82 73 67 71 67 62 60 67 65 60 60 69 66 Dewpt 63 63 62 62 62 66 64 57 53 54 53 51 51 52 54 54 54 55 PWind dir S S SW NW N NE NE E NE Wind char GN LT LT LT LT LT GN LT GN Avg clouds FW FW SC FW FW B1 B2 B1 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 0 0 50 60 60 40 60 50 50 Rain shwrs C L C L L C C L C C C C C Tstms S C $$