029
CDUS41 KLWX 160631
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
231 AM EDT SAT MAY 16 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 15 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 73 4:53 PM 90 1962 75 -2 81
MINIMUM 51 11:25 PM 37 1984 53 -2 64
2016
AVERAGE 62 64 -2 73
PRECIPITATION (IN)
YESTERDAY 0.00 2.40 2003 0.16 -0.16 0.08
MONTH TO DATE 0.86 2.22 -1.36 3.33
SINCE MAR 1 5.38 9.19 -3.81 6.76
SINCE JAN 1 11.18 14.74 -3.56 11.18
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 MAR 1 1.0 4.0 -3.0 0.0
SINCE JUL 1 13.6 21.0 -7.4 15.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 3 4 -1 0
MONTH TO DATE 93 73 20 20
SINCE MAR 1 743 1040 -297 711
SINCE JUL 1 4372 4550 -178 4033
COOLING
YESTERDAY 0 2 -2 8
MONTH TO DATE 8 26 -18 40
SINCE MAR 1 94 48 46 87
SINCE JAN 1 94 48 46 87
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WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 6.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 11:00 PM
LOWEST 34 5:00 PM
AVERAGE 57
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 90 1998
MINIMUM TEMPERATURE (F) 53 35 2000
SUNRISE AND SUNSET
MAY 16 2026...........SUNRISE 5:56 AM EDT SUNSET 8:17 PM EDT
MAY 17 2026...........SUNRISE 5:55 AM EDT SUNSET 8:18 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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