523
CDUS41 KLWX 290621
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
221 AM EDT FRI MAY 29 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 28 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 80 4:47 PM 90 1991 78 2 58
2012
2019
MINIMUM 62 11:56 PM 37 1994 57 5 52
AVERAGE 71 67 4 55
PRECIPITATION (IN)
YESTERDAY T 2.16 1982 0.16 -0.16 1.17
MONTH TO DATE 4.60 4.26 0.34 5.25
SINCE MAR 1 9.12 11.23 -2.11 8.68
SINCE JAN 1 14.92 16.78 -1.86 13.10
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 0 2 -2 10
MONTH TO DATE 125 110 15 73
SINCE MAR 1 775 1077 -302 764
SINCE JUL 1 4404 4587 -183 4086
COOLING
YESTERDAY 6 4 2 0
MONTH TO DATE 87 71 16 68
SINCE MAR 1 173 93 80 115
SINCE JAN 1 173 93 80 115
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 11.1
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1:00 AM
LOWEST 31 4:00 PM
AVERAGE 62
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 97 1969
MINIMUM TEMPERATURE (F) 57 40 1997
SUNRISE AND SUNSET
MAY 29 2026...........SUNRISE 5:47 AM EDT SUNSET 8:27 PM EDT
MAY 30 2026...........SUNRISE 5:47 AM EDT SUNSET 8:28 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page