946
FOUS51 KLWX 171258
PFMLWX
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
858 AM EDT SUN MAY 17 2026
VAZ054-172000-
REAGAN NATIONAL AIRPORT-ARLINGTON VA
38.86N 77.03W ELEV. 66 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 90 67 93 72 94
TEMP 78 85 86 81 74 69 67 70 83 91 91 86 79 74 72 74 84 92 93 89
DEWPT 62 62 62 65 65 64 64 65 66 63 62 64 64 64 63 64 64 60 59 60
RH 58 46 45 58 74 84 90 84 57 40 38 48 60 71 73 71 51 34 32 38
WIND DIR W W SW S S S N S S S S S S S S SW SW SW S S
WIND SPD 5 8 8 6 5 3 0 1 6 11 14 12 11 11 11 12 10 11 16 14
CLOUDS B1 B1 SC SC SC SC FW SC FW FW FW FW FW FW FW FW FW FW FW FW
POP 12HR 20 10 0 5 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S
TSTMS S
HEAT INDEX 86 86 83 85 92 92 87 85 92 89
MAX HEAT 86 87 92 93 83 92 92
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 94 63 71 56 67 56 70
TEMP 76 75 93 84 71 64 69 68 60 58 65 64 58 58 67 67
DEWPT 60 61 59 66 61 52 49 49 51 51 52 52 54 56 58 59
PWIND DIR SW SW N NE NE E E E
WIND CHAR GN GN GN GN GN GN GN GN
AVG CLOUDS FW FW SC B2 B2 B1 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2
POP 12HR 5 70 60 40 50 60 40 40
RAIN SHWRS L L S C C C C L C C C C C
TSTMS C S S S
MDZ013-172000-
BALTIMORE/WASHINGTON AIRPORT-ANNE ARUNDEL MD
39.19N 76.67W ELEV. 154 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 90 65 92 70 95
TEMP 80 86 87 79 72 69 66 70 84 91 91 83 76 73 71 74 87 94 95 89
DEWPT 63 63 63 64 65 64 63 65 66 66 66 67 66 64 63 64 64 62 62 64
RH 56 46 45 60 79 84 90 84 55 44 44 59 71 73 76 71 46 35 34 44
WIND DIR W W SW S S SW N N S SE S S S S S SW SW SW S S
WIND SPD 4 6 5 4 1 1 0 0 3 6 10 8 5 4 4 4 4 8 10 8
CLOUDS B1 B1 SC SC SC SC SC FW FW FW FW FW FW FW FW FW FW SC SC SC
POP 12HR 10 10 5 10 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S
TSTMS S
HEAT INDEX 81 87 88 86 94 94 86 88 95 96 90
MAX HEAT 87 88 94 94 82 95 96
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 95 61 73 54 67 54 71
TEMP 76 76 94 82 69 62 71 68 59 57 66 64 57 57 68 67
DEWPT 60 61 61 67 59 51 49 51 51 51 51 53 53 55 57 59
PWIND DIR SW W N N NE E E E
WIND CHAR LT LT LT LT LT GN LT LT
AVG CLOUDS SC FW SC B2 B2 B2 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2
POP 12HR 5 70 50 30 40 60 40 40
RAIN SHWRS L C S C C S C L C C C C C
TSTMS C S
MDZ011-172000-
BALTIMORE INNER HARBOR-BALTIMORE CITY MD
39.28N 76.61W ELEV. 20 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 90 67 92 71 95
TEMP 82 86 87 80 74 70 67 71 84 90 91 83 76 73 71 74 88 94 95 89
DEWPT 63 62 62 64 65 64 63 64 65 64 64 66 65 64 63 63 63 59 60 63
RH 53 45 43 58 74 81 87 79 53 42 41 57 69 73 76 69 43 31 31 42
WIND DIR W W SW S S N N N SE SE S S S S S SW SW SW S S
WIND SPD 4 6 5 3 1 0 0 0 3 6 10 6 4 3 3 3 3 6 9 6
CLOUDS B1 B1 SC SC SC SC SC FW FW FW FW FW FW FW FW FW FW SC SC SC
POP 12HR 10 10 5 10 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S
TSTMS S
HEAT INDEX 83 86 87 82 86 91 93 85 89 95 90
MAX HEAT 86 87 91 93 82 93 95
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 95 62 72 57 67 56 70
TEMP 77 76 94 82 70 63 71 69 60 59 66 64 58 58 68 68
DEWPT 60 60 59 67 58 48 46 48 49 48 48 49 52 52 54 56
PWIND DIR S W N N NE E E E
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC FW SC B2 B2 B2 B1 B2 B1 B1 B2 B2 B2 OV OV B2
POP 12HR 5 80 40 30 30 60 30 40
RAIN SHWRS D C S C C S C L C C C C C
TSTMS C S
WVZ052-172000-
MARTINSBURG AIRPORT-BERKELEY WV
39.41N 77.98W ELEV. 558 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 88 62 93 68 95
TEMP 77 84 85 78 70 66 63 67 83 92 92 85 77 72 68 73 88 95 95 90
DEWPT 63 62 62 64 63 62 60 63 65 61 61 62 61 60 58 60 60 58 57 58
RH 62 48 46 62 78 87 90 87 55 36 36 46 58 66 70 64 39 29 28 34
WIND DIR W W W S S N N N S S S S S S SW N SW SW SW S
WIND SPD 4 5 5 2 1 0 0 0 3 6 10 9 8 6 4 0 5 9 10 6
CLOUDS B2 SC SC FW SC FW SC SC FW FW SC SC FW FW FW FW FW SC SC SC
POP 12HR 20 5 10 10 5
QPF 12HR 0.03 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S
TSTMS S S
HEAT INDEX 85 86 85 92 92 86 88
MAX HEAT 85 86 92 93 83 94 94
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 92 57 72 52 67 52 70
TEMP 74 75 91 81 66 58 70 68 58 55 65 64 57 56 68 67
DEWPT 57 59 61 62 52 46 44 44 45 46 48 49 50 51 55 56
PWIND DIR SW W N N NE E SE SE
WIND CHAR LT GN GN LT LT GN LT LT
AVG CLOUDS SC FW SC B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2
POP 12HR 5 80 20 30 40 60 40 50
RAIN SHWRS D S S C C S C L C C C C C
TSTMS C S
VAZ506-172000-
WASHINGTON DULLES AIRPORT-LOUDOUN VA
38.96N 77.45W ELEV. 321 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 90 64 94 70 96
TEMP 78 85 86 80 73 69 65 68 84 92 93 87 80 75 71 73 88 95 96 91
DEWPT 63 64 63 65 64 64 63 65 66 64 63 63 64 63 62 63 64 61 60 59
RH 60 50 46 60 73 84 93 90 55 40 37 45 58 66 73 71 45 33 30 34
WIND DIR W W W S S N N S S S S S S S S SW SW SW S S
WIND SPD 4 6 4 3 2 0 0 1 3 8 11 9 8 8 6 4 4 8 11 10
CLOUDS B1 B1 SC SC SC FW SC SC FW FW FW SC FW FW FW SC FW FW FW FW
POP 12HR 20 10 0 5 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S
TSTMS S S
HEAT INDEX 86 87 82 86 94 94 88 82 89 95 96
MAX HEAT 86 88 94 95 85 95 97
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 95 60 71 54 67 54 71
TEMP 77 74 94 84 69 62 69 68 60 56 65 65 58 57 68 68
DEWPT 60 61 62 67 60 52 50 51 51 51 53 53 54 56 59 60
PWIND DIR SW W N N NE E E E
WIND CHAR GN LT GN LT LT LT LT LT
AVG CLOUDS FW FW SC B2 B2 B1 B1 B2 B1 B1 B2 B2 B2 B2 OV B2
POP 12HR 5 80 50 40 50 60 40 40
RAIN SHWRS D C S C C S C L C C C C C
TSTMS C S S S
VAZ037-172000-
CHARLOTTESVILLE AIRPORT-ALBEMARLE VA
38.14N 78.45W ELEV. 640 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 92 64 93 66 94
TEMP 83 89 89 81 73 69 65 69 86 93 92 84 77 71 67 71 86 94 94 88
DEWPT 62 61 62 63 63 63 61 64 65 60 59 61 61 61 59 62 61 57 54 56
RH 49 39 41 54 71 81 87 84 50 33 33 46 58 71 75 73 43 29 26 34
WIND DIR SW SW SW S S N N N S S S S S SW SW SW SW S S S
WIND SPD 3 4 4 3 1 0 0 0 4 10 11 6 8 6 5 4 6 10 12 9
CLOUDS SC SC SC SC FW FW FW FW CL FW FW FW FW FW FW SC FW FW FW FW
POP 12HR 10 10 0 0 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S
TSTMS S
HEAT INDEX 84 89 89 82 88 93 84 86
MAX HEAT 89 89 93 93 82 93 92
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 95 60 72 54 66 54 71
TEMP 73 72 94 84 70 63 71 68 60 56 64 65 59 56 69 69
DEWPT 57 60 58 64 65 57 52 51 52 51 52 53 55 55 59 60
PWIND DIR SW SW N NE NE NE NE E
WIND CHAR LT GN LT LT LT LT LT LT
AVG CLOUDS FW FW FW B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
POP 12HR 0 60 60 60 60 60 40 40
RAIN SHWRS L L C L C C L L C C C C C
TSTMS C C C S S
MDZ003-172000-
HAGERSTOWN AIRPORT-WASHINGTON MD
39.71N 77.73W ELEV. 705 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 87 64 92 68 94
TEMP 76 83 85 79 70 68 64 68 83 90 91 85 77 72 68 73 87 93 94 89
DEWPT 64 64 63 64 63 62 61 63 66 64 64 64 63 62 60 61 63 62 61 61
RH 66 53 48 60 78 81 90 84 57 42 41 50 62 71 76 66 45 36 34 39
WIND DIR W W W S SE S S S S S S S S S S S SW SW SW S
WIND SPD 5 5 6 3 1 1 1 1 4 5 9 8 6 5 3 3 5 9 10 5
CLOUDS B1 SC SC SC SC FW SC SC FW SC SC SC SC FW SC FW FW SC SC SC
POP 12HR 30 5 10 10 5
QPF 12HR 0.03 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C S S
TSTMS S S
HEAT INDEX 84 86 85 91 93 86 88 94 94 89
MAX HEAT 84 86 91 94 82 94 95
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 91 56 72 52 67 52 70
TEMP 73 74 89 80 63 58 69 68 57 55 65 64 57 56 67 67
DEWPT 60 61 65 63 53 47 46 46 47 47 50 51 51 52 56 57
PWIND DIR SW W N N NE E SE SE
WIND CHAR LT GN GN LT LT LT LT LT
AVG CLOUDS SC FW SC B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2
POP 12HR 5 80 20 20 30 60 40 50
RAIN SHWRS D S S S S C L C C C C C
TSTMS C
MDZ017-172000-
PATUXENT RIVER NAS MD
38.29N 76.41W ELEV. 39 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 88 66 89 73 94
TEMP 80 83 82 74 70 70 68 71 83 86 85 78 76 76 73 77 89 94 93 85
DEWPT 62 62 63 63 62 64 63 65 66 68 66 65 64 66 65 65 65 64 63 63
RH 54 49 53 69 76 81 84 81 57 55 53 64 66 71 76 67 45 37 37 48
WIND DIR NW SE SE S S S S SW S SE SE S S S S SW SW S S S
WIND SPD 3 6 8 5 4 3 3 3 3 10 12 10 9 8 8 8 8 10 11 10
CLOUDS SC SC FW SC SC SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW
POP 12HR 10 10 5 5 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 81 84 83 85 89 87 91 96 94 86
MAX HEAT 84 85 89 91 96 96
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 98 64 74 58 70 58 74
TEMP 79 78 96 80 74 69 73 68 63 62 68 65 62 63 72 69
DEWPT 64 64 63 64 66 58 54 53 54 53 54 54 57 58 60 60
PWIND DIR S S N N NE NE E E
WIND CHAR GN GN LT GN LT GN LT GN
AVG CLOUDS FW FW FW B1 B2 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2
POP 12HR 0 30 70 60 60 60 40 40
RAIN SHWRS C L C L C C L L L C C C C
TSTMS S C S S C S
WVZ502-172000-
PETERSBURG WV
38.99N 79.15W ELEV. 963 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 90 62 96 67 95
TEMP 77 85 88 81 68 65 62 68 85 93 95 87 76 71 67 72 87 94 95 90
DEWPT 62 60 60 62 62 59 58 60 61 59 59 61 60 58 55 58 59 58 56 59
RH 60 43 39 53 81 81 87 76 45 32 30 42 58 63 65 61 39 30 27 35
WIND DIR W W W S SW SW SW S SW S SW S SW SW SW SW W SW W SW
WIND SPD 3 4 4 2 1 2 2 1 1 4 6 4 4 4 3 2 4 6 9 4
CLOUDS B2 SC FW FW FW FW FW FW FW SC SC SC SC SC SC FW FW FW FW SC
POP 12HR 30 5 20 20 5
QPF 12HR 0.01 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C S S S S S
SPRINKLES
TSTMS S S S
HEAT INDEX 85 88 82 85 95 87
MAX HEAT 85 88 92 95 82 93 94
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 91 56 75 52 71 53 75
TEMP 72 73 89 82 66 59 72 70 59 55 68 67 59 57 72 71
DEWPT 57 58 62 63 57 51 49 48 48 49 53 53 53 53 59 59
PWIND DIR SW W N NE E E SE SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC B2 B1 B1 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2
POP 12HR 0 70 30 50 50 60 50 70
RAIN SHWRS L C C C C C C L L C C L L
TSTMS C S S S S
MDZ014-172000-
ANNAPOLIS MD
38.99N 76.49W ELEV. 7 FT
858 AM EDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 85 66 87 69 90
TEMP 80 82 83 75 71 69 67 70 83 87 85 78 73 73 70 74 88 90 89 82
DEWPT 63 63 63 64 64 64 63 64 66 65 64 65 65 65 64 64 64 63 63 63
RH 56 53 51 69 79 84 87 81 57 48 50 64 76 76 81 71 45 41 42 53
WIND DIR SW S S S S S N N S S S S S S S SW S S S S
WIND SPD 3 5 5 4 1 1 0 0 3 9 12 11 9 8 6 6 6 10 12 11
CLOUDS SC B1 SC SC SC SC FW FW FW CL FW FW FW FW FW FW FW FW SC SC
POP 12HR 10 10 0 5 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 81 83 84 85 89 86 89 91 90 83
MAX HEAT 84 84 89 89 91 91
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 91 62 72 57 68 56 71
TEMP 76 75 91 77 71 64 71 68 62 60 67 64 59 60 70 67
DEWPT 62 62 61 66 62 52 50 52 52 51 51 52 54 55 56 58
PWIND DIR S SW N N NE E E E
WIND CHAR GN GN LT LT LT GN LT LT
AVG CLOUDS FW FW FW B2 B2 B2 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2
POP 12HR 5 70 60 40 50 60 40 40
RAIN SHWRS L L S C C S C L C C C C C
TSTMS C S S
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page