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The Data originates at the National Weather Service, and is
made available here by the
UAlbany Department of Atmospheric and Environmental Sciences
Surface Observations
KDCA 041052Z 35007KT 10SM SCT250 22/14 A3007 RMK AO2 SLP182 T02220139 $=
KDCA 041152Z 35006KT 10SM FEW250 24/14 A3007 RMK AO2 SLP184 T02390144 10250
20217 51011 $=
KDCA 041252Z 33005KT 10SM FEW250 26/13 A3009 RMK AO2 SLP189 T02610133 $=
KDCA 041352Z 31009KT 10SM FEW250 27/14 A3010 RMK AO2 SLP192 T02670139 $=
KDCA 041452Z 03006KT 10SM FEW250 28/14 A3010 RMK AO2 SLP194 T02780139 51010 $=
KDCA 041552Z 35008KT 10SM FEW045 29/12 A3009 RMK AO2 SLP191 T02890117 $=
KDCA 041652Z 01007KT 10SM FEW050 FEW250 29/11 A3009 RMK AO2 SLP189 T02940111 $=
KDCA 041752Z 36007KT 10SM FEW050 FEW250 29/10 A3009 RMK AO2 SLP190 T02940100
10300 20239 55004 $=
KDCA 041852Z 01005G17KT 10SM FEW050 FEW250 30/11 A3010 RMK AO2 SLP193 T03000111
$=
KDCA 041952Z 00000KT 10SM FEW055 FEW250 31/12 A3010 RMK AO2 SLP194 T03060117 $=
KDCA 042052Z 00000KT 10SM FEW250 30/11 A3010 RMK AO2 SLP193 T03000106 50003 $=
KDCA 042152Z VRB03KT 10SM FEW250 30/11 A3009 RMK AO2 SLP189 T03000106 $=
KDCA 042252Z 34005KT 10SM SCT250 29/11 A3008 RMK AO2 SLP186 T02940111 $=
KDCA 042352Z 34006KT 10SM SCT250 27/13 A3009 RMK AO2 SLP188 T02720128 10306
20272 55005 $=
KDCA 050052Z 36004KT 10SM SCT250 27/12 A3009 RMK AO2 SLP190 T02720117 $=
KDCA 050114Z 09005KT 10SM FEW005 BKN250 27/14 A3011 RMK AO2 FU FEW002 T02670139
$=
KDCA 050114Z COR 09005KT 10SM FEW005 BKN250 27/14 A3011 RMK AO2 FU FEW005
T02670139 $=
KDCA 050152Z 08007KT 7SM FEW005 BKN250 26/15 A3011 RMK AO2 SLP197 FU FEW005
T02560150 $=
KDCA 050252Z 00000KT 5SM FU SCT005 BKN250 26/13 A3014 RMK AO2 SLP204 FU SCT005
T02560133 53016 $=
KDCA 050352Z 22003KT 6SM FU FEW005 FEW250 25/14 A3014 RMK AO2 SLP205 FU FEW005
T02500144 $=
KDCA 050452Z 15003KT 5SM FU FEW005 FEW250 23/18 A3013 RMK AO2 SLP204 FU FEW005
T02330178 403060217 $=
KDCA 050552Z 00000KT 5SM FU FEW005 23/18 A3013 RMK AO2 SLP203 FU FEW005
T02330178 10278 20233 58001 $=
KDCA 050652Z 01004KT 5SM BR CLR 22/18 A3014 RMK AO2 SLP204 T02170178 $=
KDCA 050752Z 10004KT 5SM BR FEW005 22/17 A3013 RMK AO2 SLP204 T02220172 $=
KDCA 050852Z 00000KT 5SM BR FEW005 22/17 A3015 RMK AO2 SLP209 T02170172 53006 $=
KDCA 050952Z 00000KT 4SM HZ FEW005 SCT250 22/18 A3016 RMK AO2 SLP214 T02170178
$=
Decoded Surface Observations
The weather observed at WASHINGTON DC, VA (KDCA) at 06:52 AM EDT was:
The skies were partly cloudy.
Temperature: 72F ( 22C) Dewpoint: 57F ( 14C) Relative Humidity: 59%
Winds from the N (350 degs) at 8 mph.
Pressure: 1018.2 millibars. Altimeter:30.07 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 07:52 AM EDT was:
The skies were mostly clear.
Temperature: 75F ( 24C) Dewpoint: 58F ( 14C) Relative Humidity: 55%
Winds from the N (350 degs) at 7 mph.
Pressure: 1018.4 millibars. Altimeter:30.07 inches of mercury.
The prevailing visibility was 10 miles.
The maximum temperature in the past 6 hours was 77F.
The minimum temperature in the past 6 hours was 71F.
The weather observed at WASHINGTON DC, VA (KDCA) at 08:52 AM EDT was:
The skies were mostly clear.
Temperature: 79F ( 26C) Dewpoint: 56F ( 13C) Relative Humidity: 45%
Winds from the NW (330 degs) at 6 mph.
Pressure: 1018.9 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 09:52 AM EDT was:
The skies were mostly clear.
Temperature: 80F ( 27C) Dewpoint: 57F ( 14C) Relative Humidity: 45%
Winds from the NW (310 degs) at 10 mph.
Pressure: 1019.2 millibars. Altimeter:30.10 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 10:52 AM EDT was:
The skies were mostly clear.
Temperature: 82F ( 28C) Dewpoint: 57F ( 14C) Relative Humidity: 42%
Winds from the NE (030 degs) at 7 mph.
Pressure: 1019.4 millibars. Altimeter:30.10 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 11:52 AM EDT was:
The skies were mostly clear.
Temperature: 84F ( 29C) Dewpoint: 53F ( 12C) Relative Humidity: 34%
Winds from the N (350 degs) at 9 mph.
Pressure: 1019.1 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 12:52 PM EDT was:
The skies were mostly clear.
Temperature: 85F ( 29C) Dewpoint: 52F ( 11C) Relative Humidity: 32%
Winds from the N (010 degs) at 8 mph.
Pressure: 1018.9 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 01:52 PM EDT was:
The skies were mostly clear.
Temperature: 85F ( 29C) Dewpoint: 50F ( 10C) Relative Humidity: 30%
Winds from the N (360 degs) at 8 mph.
Pressure: 1019.0 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The maximum temperature in the past 6 hours was 86F.
The minimum temperature in the past 6 hours was 75F.
The weather observed at WASHINGTON DC, VA (KDCA) at 02:52 PM EDT was:
The skies were mostly clear.
Temperature: 86F ( 30C) Dewpoint: 52F ( 11C) Relative Humidity: 31%
Winds from the N (010 degs) at 6 mph.
Pressure: 1019.3 millibars. Altimeter:30.10 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 03:52 PM EDT was:
The skies were mostly clear.
Temperature: 87F ( 31C) Dewpoint: 53F ( 12C) Relative Humidity: 31%
Winds from the CLM(CLM degs) at 0 mph.
Pressure: 1019.4 millibars. Altimeter:30.10 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 04:52 PM EDT was:
The skies were mostly clear.
Temperature: 86F ( 30C) Dewpoint: 51F ( 11C) Relative Humidity: 30%
Winds from the CLM(CLM degs) at 0 mph.
Pressure: 1019.3 millibars. Altimeter:30.10 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 05:52 PM EDT was:
The skies were mostly clear.
Temperature: 86F ( 30C) Dewpoint: 51F ( 11C) Relative Humidity: 30%
Winds from the VRB(VRB degs) at 3 mph.
Pressure: 1018.9 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 06:52 PM EDT was:
The skies were partly cloudy.
Temperature: 85F ( 29C) Dewpoint: 52F ( 11C) Relative Humidity: 32%
Winds from the NNW(340 degs) at 6 mph.
Pressure: 1018.6 millibars. Altimeter:30.08 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 07:52 PM EDT was:
The skies were partly cloudy.
Temperature: 81F ( 27C) Dewpoint: 55F ( 13C) Relative Humidity: 41%
Winds from the NNW(340 degs) at 7 mph.
Pressure: 1018.8 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The maximum temperature in the past 6 hours was 87F.
The minimum temperature in the past 6 hours was 81F.
The weather observed at WASHINGTON DC, VA (KDCA) at 08:52 PM EDT was:
The skies were partly cloudy.
Temperature: 81F ( 27C) Dewpoint: 53F ( 12C) Relative Humidity: 38%
Winds from the N (360 degs) at 5 mph.
Pressure: 1019.0 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 09:14 PM EDT was:
The skies were mostly cloudy.
Temperature: 81F ( 27C) Dewpoint: 57F ( 14C) Relative Humidity: 45%
Winds from the E (090 degs) at 6 mph.
Altimeter:30.11 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 09:14 PM EDT was:
The skies were mostly cloudy.
Temperature: 81F ( 27C) Dewpoint: 57F ( 14C) Relative Humidity: 45%
Winds from the E (090 degs) at 6 mph.
Altimeter:30.11 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 09:52 PM EDT was:
The skies were mostly cloudy.
Temperature: 79F ( 26C) Dewpoint: 59F ( 15C) Relative Humidity: 51%
Winds from the E (080 degs) at 8 mph.
Pressure: 1019.7 millibars. Altimeter:30.11 inches of mercury.
The prevailing visibility was 7 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 10:52 PM EDT was:
The skies were mostly cloudy.
The weather reported was smoke.
Temperature: 79F ( 26C) Dewpoint: 55F ( 13C) Relative Humidity: 45%
Winds from the CLM(CLM degs) at 0 mph.
Pressure: 1020.4 millibars. Altimeter:30.14 inches of mercury.
The prevailing visibility was 5 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 11:52 PM EDT was:
The skies were mostly clear.
The weather reported was smoke.
Temperature: 77F ( 25C) Dewpoint: 57F ( 14C) Relative Humidity: 50%
Winds from the SW (220 degs) at 3 mph.
Pressure: 1020.5 millibars. Altimeter:30.14 inches of mercury.
The prevailing visibility was 6 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 12:52 AM EDT was:
The skies were mostly clear.
The weather reported was smoke.
Temperature: 73F ( 23C) Dewpoint: 64F ( 18C) Relative Humidity: 73%
Winds from the SE (150 degs) at 3 mph.
Pressure: 1020.4 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 5 miles.
The maximum temperature in the past 24 hours was 87F.
The minimum temperature in the past 24 hours was 71F.
The weather observed at WASHINGTON DC, VA (KDCA) at 01:52 AM EDT was:
The skies were mostly clear.
The weather reported was smoke.
Temperature: 73F ( 23C) Dewpoint: 64F ( 18C) Relative Humidity: 73%
Winds from the CLM(CLM degs) at 0 mph.
Pressure: 1020.3 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 5 miles.
The maximum temperature in the past 6 hours was 82F.
The minimum temperature in the past 6 hours was 74F.
The weather observed at WASHINGTON DC, VA (KDCA) at 02:52 AM EDT was:
The skies were clear.
The weather reported was fog.
Temperature: 71F ( 22C) Dewpoint: 64F ( 18C) Relative Humidity: 78%
Winds from the N (010 degs) at 5 mph.
Pressure: 1020.4 millibars. Altimeter:30.14 inches of mercury.
The prevailing visibility was 5 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 03:52 AM EDT was:
The skies were mostly clear.
The weather reported was fog.
Temperature: 72F ( 22C) Dewpoint: 63F ( 17C) Relative Humidity: 73%
Winds from the E (100 degs) at 5 mph.
Pressure: 1020.4 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 5 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 04:52 AM EDT was:
The skies were mostly clear.
The weather reported was fog.
Temperature: 71F ( 22C) Dewpoint: 63F ( 17C) Relative Humidity: 76%
Winds from the CLM(CLM degs) at 0 mph.
Pressure: 1020.9 millibars. Altimeter:30.15 inches of mercury.
The prevailing visibility was 5 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 05:52 AM EDT was:
The skies were partly cloudy.
The weather reported was haze.
Temperature: 71F ( 22C) Dewpoint: 64F ( 18C) Relative Humidity: 78%
Winds from the CLM(CLM degs) at 0 mph.
Pressure: 1021.4 millibars. Altimeter:30.16 inches of mercury.
The prevailing visibility was 4 miles.
Short Range Forecast
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Zone Forecast
DCZ001-051200-
District of Columbia-
Including the city of Washington
433 AM EDT Sat Jul 5 2025
.REST OF THE OVERNIGHT...Mostly clear. Lows in the mid 60s. Light
and variable winds.
.TODAY...Mostly sunny. Highs around 90. South winds around 5 mph.
.TONIGHT...Mostly clear. Lows in the upper 60s. South winds
around 5 mph.
.SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 70s. South winds 5 to 10 mph.
.MONDAY...Partly sunny with a chance of showers and
thunderstorms. Highs around 90. Chance of rain 40 percent.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 70s.
.TUESDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the lower 90s. Chance of rain 50 percent.
.TUESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.
.WEDNESDAY...Mostly sunny. Highs around 90.
.WEDNESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 30 percent.
.THURSDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.
.FRIDAY...Mostly cloudy with a chance of showers and
thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
DCZ001-051200-
District of Columbia-
Including the city of Washington
451 AM EDT Sat Jul 5 2025
.REST OF THE OVERNIGHT...Mostly clear. Patchy fog. Lows in the
mid 60s. Light and variable winds.
.TODAY...Patchy fog in the morning. Mostly sunny. Highs around
90. South winds around 5 mph.
.TONIGHT...Mostly clear. Lows in the upper 60s. South winds
around 5 mph.
.SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 70s. South winds 5 to 10 mph.
.MONDAY...Partly sunny with a chance of showers and
thunderstorms. Highs around 90. Chance of rain 40 percent.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 70s.
.TUESDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the lower 90s. Chance of rain 50 percent.
.TUESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.
.WEDNESDAY...Mostly sunny. Highs around 90.
.WEDNESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 30 percent.
.THURSDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.
.FRIDAY...Mostly cloudy with a chance of showers and
thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
State Forecast
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State Forecast Discussion
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GFS Short-Range Model Output Statistics (MOS) Forecast
KDCA GFS MOS GUIDANCE 7/05/2025 0600 UTC
DT /JULY 5 /JULY 6 /JULY 7 /
HR 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 00 06
X/N 90 72 89 77 90
TMP 76 83 88 88 84 78 74 72 75 83 87 88 85 81 79 78 80 84 88 84 80
DPT 64 63 62 61 62 63 64 64 67 69 70 70 72 74 74 73 74 74 74 75 75
CLD SC FW FW CL CL FW CL SC SC SC BK SC BK SC BK OV OV BK BK OV BK
WDR 14 16 16 17 16 17 18 18 18 17 17 16 16 16 18 18 19 18 17 17 19
WSP 02 05 08 08 08 06 05 04 04 07 09 10 08 06 05 04 05 06 08 07 05
P06 0 0 0 2 3 8 16 17 16 20 26
P12 0 2 9 23 22
Q06 0 0 0 0 0 0 0 0 0 0 0
Q12 0 0 0 0 0
T06 0/ 2 1/ 5 0/ 0 0/ 0 0/ 6 8/16 11/ 5 5/ 1 4/ 5 26/ 9
T12 1/ 6 0/ 6 11/16 5/ 6 37/25
CIG 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 7 6 7 8 8 8
VIS 5 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
OBV BR N N N N N N N N N N N N N N N N N N N N
GFS Long-Range Model Output Statistics (MOS) Forecast
KDCA GFSX MOS GUIDANCE 7/05/2025 0000 UTC
FHR 24| 36 48| 60 72| 84 96|108 120|132 144|156 168|180 192
SAT 05| SUN 06| MON 07| TUE 08| WED 09| THU 10| FRI 11| SAT 12 CLIMO
X/N 90| 71 89| 76 92| 77 93| 76 93| 77 92| 73 89| 74 90 66 88
TMP 83| 75 85| 79 86| 81 86| 78 86| 80 85| 76 83| 77 82
DPT 61| 66 71| 73 73| 75 73| 72 71| 72 72| 69 68| 68 67
CLD CL| PC PC| OV OV| PC OV| OV OV| PC OV| OV OV| PC OV
WND 9| 9 9| 7 9| 8 8| 7 7| 7 8| 7 16| 10 10
P12 0| 1 7| 18 22| 39 52| 55 31| 32 47| 39 29| 24 25 19 23
P24 | 10| 27| 60| 70| 54| 55| 33 34
Q12 0| 0 0| 0 0| 1 2| 3 0| 0 4| 2 |
Q24 | 0| 0| 2| 3| 5| |
T12 2| 0 9| 9 28| 26 36| 29 34| 24 37| 23 25| 12 23
T24 | 2 | 21 | 40 | 53 | 48 | 40 | 28
NGM Model Output Statistics (MOS) Forecast
Climatological Summary
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Watch and Warning Statment
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Park/Ski Recreation Report/Forecast
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