National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2023-12-15 05:21 UTC
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920
CDUS41 KLWX 150521
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1221 AM EST FRI DEC 15 2023
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 14 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 50 3:27 PM 69 2015 47 3 42
MINIMUM 23 7:38 AM 3 1989 29 -6 20
AVERAGE 37 38 -1 31
PRECIPITATION (IN)
YESTERDAY 0.00 1.24 2020 0.11 -0.11 T
MONTH TO DATE 2.46 1.59 0.87 0.40
SINCE DEC 1 2.46 1.59 0.87 0.40
SINCE JAN 1 31.49 41.53 -10.04 36.21
SNOWFALL (IN)
YESTERDAY 0.0 3.6 2003 0.1 -0.1 0.0
MONTH TO DATE 0.5 1.1 -0.6 0.0
SINCE DEC 1 0.5 1.1 -0.6 0.0
SINCE JUL 1 0.5 1.4 -0.9 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 28 27 1 34
MONTH TO DATE 308 357 -49 348
SINCE DEC 1 308 357 -49 348
SINCE JUL 1 1079 1257 -178 1182
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1380 1231 149 1376
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 3.7
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 6:00 AM
LOWEST 25 2:00 PM
AVERAGE 52
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 71 1971
MINIMUM TEMPERATURE (F) 29 5 1989
SUNRISE AND SUNSET
DECEMBER 15 2023......SUNRISE 7:21 AM EST SUNSET 4:49 PM EST
DECEMBER 16 2023......SUNRISE 7:22 AM EST SUNSET 4:49 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$