National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2025-05-27 06:44 UTC
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532
CDUS41 KLWX 270644
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
244 AM EDT TUE MAY 27 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 26 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 72 5:15 PM 92 2007 77 -5 89
2021
MINIMUM 52 11:59 PM 38 1967 56 -4 66
AVERAGE 62 67 -5 78
PRECIPITATION (IN)
YESTERDAY T 3.59 2009 0.15 -0.15 0.12
MONTH TO DATE 3.96 3.95 0.01 4.01
SINCE MAR 1 7.39 10.92 -3.53 9.64
SINCE JAN 1 11.81 16.47 -4.66 17.09
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 3 2 1 0
MONTH TO DATE 55 106 -51 47
SINCE MAR 1 746 1073 -327 726
SINCE JUL 1 4068 4583 -515 3690
COOLING
YESTERDAY 0 4 -4 13
MONTH TO DATE 68 63 5 117
SINCE MAR 1 115 85 30 161
SINCE JAN 1 115 85 30 164
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 3.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 70 10:00 PM
LOWEST 39 5:00 PM
AVERAGE 55
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 92 1965
2010
MINIMUM TEMPERATURE (F) 56 37 1972
SUNRISE AND SUNSET
MAY 27 2025...........SUNRISE 5:48 AM EDT SUNSET 8:26 PM EDT
MAY 28 2025...........SUNRISE 5:48 AM EDT SUNSET 8:27 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$