National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2025-04-18 06:24 UTC
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626
CDUS41 KLWX 180624
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EDT FRI APR 18 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 17 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 64 4:13 PM 93 2002 68 -4 74
MINIMUM 32 4:56 AM 27 1983 44 -12 59
AVERAGE 48 56 -8 67
PRECIPITATION (IN)
YESTERDAY 0.00 1.44 2000 0.11 -0.11 T
MONTH TO DATE 1.37 1.87 -0.50 1.43
SINCE MAR 1 2.79 5.37 -2.58 5.32
SINCE JAN 1 7.21 10.92 -3.71 12.77
SNOWFALL (IN)
YESTERDAY 0.0 T 1983 0.0 0.0 0.0
MONTH TO DATE 0.0 0.1 -0.1 T
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 17 10 7 0
MONTH TO DATE 213 216 -3 134
SINCE MAR 1 663 863 -200 598
SINCE JUL 1 3985 4373 -388 3562
COOLING
YESTERDAY 0 1 -1 2
MONTH TO DATE 2 6 -4 18
SINCE MAR 1 19 8 11 18
SINCE JAN 1 19 8 11 21
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 72 5:00 AM
LOWEST 21 5:00 PM
AVERAGE 47
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 90 1976
MINIMUM TEMPERATURE (F) 44 29 2018
SUNRISE AND SUNSET
APRIL 18 2025.........SUNRISE 6:29 AM EDT SUNSET 7:50 PM EDT
APRIL 19 2025.........SUNRISE 6:27 AM EDT SUNSET 7:51 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$