367
CDUS41 KLWX 090627
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT FRI MAY 09 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 8 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 77 12:39 PM 90 2000 73 4 86
MINIMUM 52 3:57 AM 29 1974 51 1 65
AVERAGE 65 62 3 76
PRECIPITATION (IN)
YESTERDAY 0.01 2.10 1960 0.15 -0.14 0.00
MONTH TO DATE 0.88 1.14 -0.26 1.50
SINCE MAR 1 4.31 8.11 -3.80 7.13
SINCE JAN 1 8.73 13.66 -4.93 14.58
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 0 5 -5 0
MONTH TO DATE 2 44 -42 15
SINCE MAR 1 693 1011 -318 694
SINCE JUL 1 4015 4521 -506 3658
COOLING
YESTERDAY 0 2 -2 11
MONTH TO DATE 29 12 17 40
SINCE MAR 1 76 34 42 84
SINCE JAN 1 76 34 42 87
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WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 2.3
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 3:00 AM
LOWEST 48 11:00 AM
AVERAGE 73
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 91 1963
MINIMUM TEMPERATURE (F) 51 30 1976
SUNRISE AND SUNSET
MAY 9 2025...........SUNRISE 6:03 AM EDT SUNSET 8:10 PM EDT
MAY 10 2025...........SUNRISE 6:02 AM EDT SUNSET 8:11 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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