Washington climate

Washington Weather in August

NOAA 1991-2020 normals for Chelsea 2 Nw, 11.3 km from Washington

Average highs run from 76°F on August 1 to 73°F on August 31, and lows from 55°F to 51°F. Normal precipitation for the month is 4.25 in over about 11 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Washington, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
75°F
Average low
53°F
Precipitation
4.25 in
Record high
97°FAug 2, 1975
Record low
31°FAug 31, 1965
Chance of a freeze
0%
Daylight
14 h 36 min to 13 h 15 min
Cloud cover
61%
Humidity
83%
Dew point
58°F
Wind
3.6 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 176°F55°F94°F 197539°F 196441%0%
Aug 276°F55°F97°F 197537°F 195341%0%
Aug 376°F55°F93°F 198836°F 195340%0%
Aug 476°F55°F93°F 198840°F 196440%0%
Aug 576°F55°F92°F 195537°F 197240%0%
Aug 676°F55°F91°F 200140°F 195140%0%
Aug 776°F55°F89°F 200139°F 196440%0%
Aug 876°F54°F92°F 202243°F 195739%0%
Aug 976°F54°F92°F 200138°F 195539%0%
Aug 1076°F54°F92°F 194942°F 195539%0%
Aug 1176°F54°F91°F 202537°F 196339%0%
Aug 1276°F54°F91°F 202542°F 195038%0%
Aug 1376°F54°F91°F 198839°F 195038%0%
Aug 1476°F54°F90°F 200242°F 196638%0%
Aug 1576°F54°F91°F 196539°F 195037%0%
Aug 1676°F54°F89°F 195940°F 196837%0%
Aug 1776°F53°F90°F 198739°F 197936%0%
Aug 1875°F53°F89°F 200941°F 195336%0%
Aug 1975°F53°F87°F 201538°F 196836%0%
Aug 2075°F53°F88°F 202239°F 195335%0%
Aug 2175°F53°F90°F 195538°F 195335%0%
Aug 2275°F53°F91°F 195539°F 195035%0%
Aug 2375°F53°F84°F 194837°F 198834%0%
Aug 2475°F52°F86°F 195040°F 196534%0%
Aug 2575°F52°F92°F 194836°F 198734%0%
Aug 2675°F52°F93°F 194835°F 198633%0%
Aug 2774°F52°F91°F 195236°F 195433%0%
Aug 2874°F52°F92°F 195238°F 195733%0%
Aug 2974°F51°F91°F 197736°F 195533%0%
Aug 3074°F51°F90°F 195334°F 196533%0%
Aug 3173°F51°F89°F 199331°F 196532%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Washington, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 5:38 AM, sunset 8:14 PM
August 31
sunrise 6:12 AM, sunset 7:27 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00431363 (Chelsea 2 Nw), public domain. Records: NOAA GHCN-Daily, station USW00094705, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.