Washington climate

Washington Weather in August

NOAA 1991-2020 normals for Washington, 1.1 km from Washington

Average highs run from 90°F on August 1 to 85°F on August 31, and lows from 67°F to 60°F. Normal precipitation for the month is 4.26 in over about 8 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.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
88°F
Average low
64°F
Precipitation
4.26 in
Record high
110°FAug 17, 1956
Record low
44°FAug 4, 1974
Chance of a freeze
0%
Days of 90°F or more
15.3
Daylight
14 h 14 min to 13 h 06 min
Cloud cover
49%
Humidity
65%
Dew point
62°F
Wind
8.9 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 190°F67°F103°F 195554°F 202128%0%
Aug 290°F67°F105°F 196453°F 202128%0%
Aug 390°F67°F105°F 198754°F 197428%0%
Aug 490°F66°F103°F 195444°F 197428%0%
Aug 590°F66°F104°F 195452°F 197828%0%
Aug 690°F66°F106°F 197052°F 199028%0%
Aug 789°F66°F105°F 197050°F 198928%0%
Aug 889°F66°F103°F 198049°F 198928%0%
Aug 989°F66°F103°F 197651°F 198927%0%
Aug 1089°F66°F103°F 200653°F 199127%0%
Aug 1189°F65°F101°F 201050°F 196727%0%
Aug 1289°F65°F101°F 195745°F 196427%0%
Aug 1389°F65°F103°F 201048°F 199227%0%
Aug 1488°F65°F103°F 195747°F 200427%0%
Aug 1588°F65°F102°F 200749°F 199227%0%
Aug 1688°F64°F106°F 195655°F 195126%0%
Aug 1788°F64°F110°F 195645°F 201226%0%
Aug 1888°F64°F104°F 200346°F 201226%0%
Aug 1988°F64°F110°F 202350°F 200126%0%
Aug 2087°F63°F104°F 196247°F 201226%0%
Aug 2187°F63°F104°F 202344°F 195626%0%
Aug 2287°F63°F103°F 202349°F 200926%0%
Aug 2387°F63°F102°F 202348°F 196625%0%
Aug 2487°F62°F105°F 202347°F 201525%0%
Aug 2586°F62°F104°F 202349°F 201525%0%
Aug 2686°F62°F104°F 195551°F 198525%0%
Aug 2786°F62°F105°F 195546°F 196725%0%
Aug 2886°F61°F104°F 195546°F 197625%0%
Aug 2986°F61°F106°F 200046°F 198825%0%
Aug 3085°F61°F100°F 195146°F 200925%0%
Aug 3185°F60°F104°F 200044°F 200924%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.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:27 AM, sunset 8:41 PM
August 31
sunrise 6:55 AM, sunset 8:01 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00148578 (Washington), public domain. Records: NOAA GHCN-Daily, station USC00145063, 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.