National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2020-09-16 05:22 UTC
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740
CDUS41 KLWX 160522
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
122 AM EDT WED SEP 16 2020
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 15 2020...
CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1960 TO 2020
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 69 4:02 PM 95 1993 80 -11 87
1998
MINIMUM 49 11:59 PM 38 1985 57 -8 60
AVERAGE 59 68 -9 74
PRECIPITATION (IN)
YESTERDAY 0.00 1.06 1981 0.15 -0.15 0.00
MONTH TO DATE 1.16 1.88 -0.72 0.33
SINCE SEP 1 1.16 1.88 -0.72 0.33
SINCE JAN 1 35.38 29.88 5.50 30.17
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 SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 6 1 5 0
MONTH TO DATE 6 8 -2 0
SINCE SEP 1 6 8 -2 0
SINCE JUL 1 6 10 -4 0
COOLING
YESTERDAY 0 5 -5 9
MONTH TO DATE 116 97 19 144
SINCE SEP 1 116 97 19 144
SINCE JAN 1 1368 1113 255 1379
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 4.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 10:00 PM
LOWEST 42 2:00 PM
AVERAGE 68
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 97 1991
MINIMUM TEMPERATURE (F) 56 37 1984
SUNRISE AND SUNSET
SEPTEMBER 16 2020.....SUNRISE 6:53 AM EDT SUNSET 7:16 PM EDT
SEPTEMBER 17 2020.....SUNRISE 6:53 AM EDT SUNSET 7:14 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$