496
CDUS41 KLWX 100628
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EDT SAT MAY 10 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 9 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 63 5:13 PM 91 1963 74 -11 74
MINIMUM 52 11:59 PM 30 1976 51 1 60
AVERAGE 58 62 -4 67
PRECIPITATION (IN)
YESTERDAY 0.55 0.93 1974 0.15 0.40 0.02
MONTH TO DATE 1.43 1.29 0.14 1.52
SINCE MAR 1 4.86 8.26 -3.40 7.15
SINCE JAN 1 9.28 13.81 -4.53 14.60
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 0.0 4.0 -4.0 T
SINCE JUL 1 15.5 21.0 -5.5 11.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 7 5 2 0
MONTH TO DATE 9 49 -40 15
SINCE MAR 1 700 1016 -316 694
SINCE JUL 1 4022 4526 -504 3658
COOLING
YESTERDAY 0 2 -2 2
MONTH TO DATE 29 14 15 42
SINCE MAR 1 76 36 40 86
SINCE JAN 1 76 36 40 89
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 9.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 1:00 AM
LOWEST 52 5:00 PM
AVERAGE 74
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 90 1963
MINIMUM TEMPERATURE (F) 51 31 1966
1983
SUNRISE AND SUNSET
MAY 10 2025...........SUNRISE 6:02 AM EDT SUNSET 8:11 PM EDT
MAY 11 2025...........SUNRISE 6:01 AM EDT SUNSET 8:12 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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