Washington County climate

Washington County Weather in August

NOAA 1991-2020 normals for Marietta Wwtp, 7.4 km from Washington County

Average highs run from 85°F on August 1 to 83°F on August 31, and lows from 65°F to 61°F. Normal precipitation for the month is 3.60 in over about 10 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 County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
85°F
Average low
63°F
Precipitation
3.60 in
Record high
101°FAug 17, 1988
Record low
40°FAug 29, 1986
Chance of a freeze
0%
Days of 90°F or more
5.8
Daylight
14 h 12 min to 13 h 04 min
Cloud cover
55%
Humidity
67%
Dew point
60°F
Wind
3.1 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 185°F65°F96°F 200252°F 199037%0%
Aug 285°F65°F96°F 198752°F 199237%0%
Aug 385°F65°F97°F 195550°F 196536%0%
Aug 485°F65°F97°F 195549°F 196536%0%
Aug 585°F65°F97°F 200252°F 195136%0%
Aug 685°F65°F96°F 202447°F 195736%0%
Aug 785°F65°F93°F 200650°F 195736%0%
Aug 885°F65°F96°F 200748°F 198935%0%
Aug 985°F64°F97°F 200748°F 198935%0%
Aug 1085°F64°F94°F 198849°F 197235%0%
Aug 1185°F64°F96°F 200253°F 196235%0%
Aug 1285°F64°F98°F 202149°F 196835%0%
Aug 1385°F64°F99°F 200551°F 196734%0%
Aug 1485°F64°F97°F 198848°F 200434%0%
Aug 1585°F64°F95°F 198746°F 196434%0%
Aug 1685°F64°F94°F 196549°F 196434%0%
Aug 1785°F64°F101°F 198853°F 197933%0%
Aug 1885°F63°F94°F 198851°F 196233%0%
Aug 1985°F63°F93°F 196850°F 195333%0%
Aug 2085°F63°F98°F 196251°F 195333%0%
Aug 2185°F63°F94°F 198345°F 202433%0%
Aug 2284°F63°F99°F 198346°F 202432%0%
Aug 2384°F63°F97°F 200248°F 195232%0%
Aug 2484°F62°F95°F 200748°F 197132%0%
Aug 2584°F62°F96°F 202448°F 195132%0%
Aug 2684°F62°F98°F 202450°F 195132%0%
Aug 2784°F62°F99°F 194847°F 202532%0%
Aug 2884°F62°F99°F 194845°F 198631%0%
Aug 2984°F61°F98°F 195340°F 198631%0%
Aug 3083°F61°F99°F 195346°F 202531%0%
Aug 3183°F61°F99°F 195346°F 202531%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Washington County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 6:26 AM, sunset 8:38 PM
August 31
sunrise 6:54 AM, sunset 7:58 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00334927 (Marietta Wwtp), public domain. Records: NOAA GHCN-Daily, station USW00003804, 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.