National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2023-08-20 05:23 UTC
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015
CDUS41 KLWX 200523
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
123 AM EDT SUN AUG 20 2023
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 19 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 86 5:06 PM 95 2002 86 0 88
2019
MINIMUM 54 5:46 AM 51 1998 65 -11 60
AVERAGE 70 76 -6 74
PRECIPITATION (IN)
YESTERDAY 0.00 1.54 1967 0.11 -0.11 0.02
MONTH TO DATE 1.84 2.17 -0.33 2.05
SINCE JUN 1 9.23 10.62 -1.39 10.03
SINCE JAN 1 19.21 27.86 -8.65 27.25
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 JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 5 13 -8 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 5 11 -6 9
MONTH TO DATE 229 219 10 240
SINCE JUN 1 884 835 49 893
SINCE JAN 1 958 941 17 1022
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 4.5
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 5:00 AM
LOWEST 26 3:00 PM
AVERAGE 53
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 104 1983
MINIMUM TEMPERATURE (F) 65 47 1964
1976
1998
SUNRISE AND SUNSET
AUGUST 20 2023........SUNRISE 6:28 AM EDT SUNSET 7:58 PM EDT
AUGUST 21 2023........SUNRISE 6:29 AM EDT SUNSET 7:57 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$