National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2025-05-17 06:24 UTC
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337
CDUS41 KLWX 170624
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EDT SAT MAY 17 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 16 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 89 2:08 PM 90 1998 75 14 80
MINIMUM 65 5:26 AM 35 2000 53 12 54
AVERAGE 77 64 13 67
PRECIPITATION (IN)
YESTERDAY T 1.97 2014 0.15 -0.15 0.00
MONTH TO DATE 3.33 2.37 0.96 2.47
SINCE MAR 1 6.76 9.34 -2.58 8.10
SINCE JAN 1 11.18 14.89 -3.71 15.55
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 4 -4 0
MONTH TO DATE 20 77 -57 45
SINCE MAR 1 711 1044 -333 724
SINCE JUL 1 4033 4554 -521 3688
COOLING
YESTERDAY 12 3 9 2
MONTH TO DATE 52 29 23 44
SINCE MAR 1 99 51 48 88
SINCE JAN 1 99 51 48 91
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 4.6
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 48 1:00 PM
AVERAGE 74
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 93 1960
MINIMUM TEMPERATURE (F) 53 30 1984
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 5:55 AM EDT SUNSET 8:18 PM EDT
MAY 18 2025...........SUNRISE 5:54 AM EDT SUNSET 8:19 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$