National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-05-18 05:27 UTC
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290
CDUS41 KLWX 180530
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
127 AM EDT THU MAY 18 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 17 2017...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2017
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 92R 240 PM 89 1986 75 17 56
MINIMUM 57 351 AM 30 1984 51 6 50
AVERAGE 75 63 12 53
PRECIPITATION (IN)
YESTERDAY 0.00 1.22 1970 0.16 -0.16 0.33
MONTH TO DATE 4.19 2.42 1.77 4.31
SINCE MAR 1 11.35 9.27 2.08 7.64
SINCE JAN 1 14.79 14.69 0.10 15.90
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0
SINCE JUL 1 7.3 22.0 -14.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 12
MONTH TO DATE 126 92 34 133
SINCE MAR 1 945 1074 -129 914
SINCE JUL 1 3838 4664 -826 4005
COOLING
YESTERDAY 10 2 8 0
MONTH TO DATE 22 25 -3 4
SINCE MAR 1 91 45 46 27
SINCE JAN 1 91 45 46 27
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 6.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 400 AM
LOWEST 34 600 PM
AVERAGE 60
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 91 1987
MINIMUM TEMPERATURE (F) 52 33 1973
SUNRISE AND SUNSET
MAY 18 2017...........SUNRISE 554 AM EDT SUNSET 819 PM EDT
MAY 19 2017...........SUNRISE 554 AM EDT SUNSET 819 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$