Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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582
CDUS41 KLWX 172131
CLIDCA
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
531 PM EDT MON AUG 17 2026
...................................
...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR AUGUST 17 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 94 3:33 PM 105 1997 88 6 96
MINIMUM 74 5:27 AM 51 1902 71 3 75
AVERAGE 84 80 4 86
PRECIPITATION (IN)
TODAY T 2.39 1879 0.10 -0.10 0.01
MONTH TO DATE 3.48 1.78 1.70 0.04
SINCE JUN 1 8.74 10.31 -1.57 9.06
SINCE JAN 1 20.77 26.44 -5.67 27.10
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 0 4 -4 8
SINCE JUL 1 0 0 0 0
COOLING
TODAY 19 14 5 21
MONTH TO DATE 287 260 27 227
SINCE JUN 1 1199 1099 100 1149
SINCE JAN 1 1423 1266 157 1350
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 7.6
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 1:00 AM
LOWEST 51 4:00 PM
AVERAGE 73
..........................................................
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 98 2002
MINIMUM TEMPERATURE (F) 71 54 1902
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 6:24 AM EDT SUNSET 8:00 PM EDT
AUGUST 18 2026........SUNRISE 6:25 AM EDT SUNSET 7:59 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$