821
CDUS41 KLWX 300523
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
122 AM EDT SAT JUN 30 2012
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 29 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 102R 409 PM 95 1991 87 15 88
1986
1980
MINIMUM 71 1159 PM 47 1970 64 7 68
AVERAGE 87 76 11 78
PRECIPITATION (IN)
YESTERDAY 0.38 2.70 1975 0.12 0.26 0.00
MONTH TO DATE 1.79 3.85 -2.06 1.40
SINCE JUN 1 1.79 3.85 -2.06 1.40
SINCE JAN 1 14.60 20.67 -6.07 19.04
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 0 0 0 0
MONTH TO DATE 9 13 -4 0
SINCE JUN 1 9 13 -4 0
SINCE JUL 1 3770 4715 -945 4659
COOLING
YESTERDAY 22 11 11 13
MONTH TO DATE 206 227 -21 298
SINCE JUN 1 206 227 -21 298
SINCE JAN 1 380 319 61 464
..............................................................
WIND (MPH)
HIGHEST WIND SPEED 59 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 71 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 1100 PM
LOWEST 36 400 PM
AVERAGE 63
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 98 1964
MINIMUM TEMPERATURE (F) 65 51 1989
SUNRISE AND SUNSET
JUNE 30 2012..........SUNRISE 548 AM EDT SUNSET 839 PM EDT
JULY 1 2012..........SUNRISE 548 AM EDT SUNSET 839 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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