National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-05-12 05:31 UTC
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685
CDUS41 KLWX 120531
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
131 AM EDT FRI MAY 12 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 11 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 59 307 AM 90 1993 74 -15 60
MINIMUM 50 1124 PM 29 1966 50 0 54
AVERAGE 55 62 -7 57
PRECIPITATION (IN)
YESTERDAY 1.73 3.73 2008 0.14 1.59 0.17
MONTH TO DATE 3.40 1.49 1.91 3.75
SINCE MAR 1 10.56 8.34 2.22 7.08
SINCE JAN 1 14.00 13.76 0.24 15.34
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 10 5 5 8
MONTH TO DATE 90 66 24 83
SINCE MAR 1 909 1048 -139 864
SINCE JUL 1 3802 4638 -836 3955
COOLING
YESTERDAY 0 2 -2 0
MONTH TO DATE 12 13 -1 2
SINCE MAR 1 81 33 48 25
SINCE JAN 1 81 33 48 25
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 6.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 500 PM
LOWEST 62 300 AM
AVERAGE 79
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 89 1991
1982
MINIMUM TEMPERATURE (F) 50 34 1969
SUNRISE AND SUNSET
MAY 12 2017...........SUNRISE 600 AM EDT SUNSET 813 PM EDT
MAY 13 2017...........SUNRISE 559 AM EDT SUNSET 814 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$