456
CDUS41 KLWX 280621
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
221 AM EDT WED MAY 28 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 27 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 66 10:52 AM 92 1965 78 -12 84
2010
MINIMUM 48 4:23 AM 37 1972 56 -8 64
AVERAGE 57 67 -10 74
PRECIPITATION (IN)
YESTERDAY 0.12 1.45 1968 0.15 -0.03 T
MONTH TO DATE 4.08 4.10 -0.02 4.01
SINCE MAR 1 7.51 11.07 -3.56 9.64
SINCE JAN 1 11.93 16.62 -4.69 17.09
SNOWFALL (IN)
YESTERDAY MM MM MM 0.0 MM 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 8 2 6 0
MONTH TO DATE 63 108 -45 47
SINCE MAR 1 754 1075 -321 726
SINCE JUL 1 4076 4585 -509 3690
COOLING
YESTERDAY 0 4 -4 9
MONTH TO DATE 68 67 1 126
SINCE MAR 1 115 89 26 170
SINCE JAN 1 115 89 26 173
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WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 2.7
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 11:00 PM
LOWEST 54 11:00 AM
AVERAGE 76
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 90 1991
2012
2019
MINIMUM TEMPERATURE (F) 57 37 1994
SUNRISE AND SUNSET
MAY 28 2025...........SUNRISE 5:48 AM EDT SUNSET 8:27 PM EDT
MAY 29 2025...........SUNRISE 5:47 AM EDT SUNSET 8:28 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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