909
CDUS41 KLWX 180519
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
118 AM EDT FRI MAY 18 2012
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 17 2012
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2012
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 73 433 PM 89 1986 75 -2 71
MINIMUM 50 1145 PM 30 1984 51 -1 62
AVERAGE 62 63 -1 67
PRECIPITATION (IN)
YESTERDAY 0.00 1.22 1970 0.16 -0.16 0.72
MONTH TO DATE 1.76 2.42 -0.66 1.99
SINCE MAR 1 5.10 9.27 -4.17 12.27
SINCE JAN 1 9.19 14.69 -5.50 16.35
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0
SINCE JUL 1 3.7 22.0 -18.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 3 4 -1 0
MONTH TO DATE 27 92 -65 69
SINCE MAR 1 702 1074 -372 975
SINCE JUL 1 3756 4664 -908 4654
COOLING
YESTERDAY 0 2 -2 2
MONTH TO DATE 43 25 18 18
SINCE MAR 1 71 45 26 63
SINCE JAN 1 71 45 26 63
..............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 8.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 76 1200 AM
LOWEST 27 200 PM
AVERAGE 52
......................................................
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 2012...........SUNRISE 554 AM EDT SUNSET 819 PM EDT
MAY 19 2012...........SUNRISE 553 AM EDT SUNSET 820 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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