Washington County climate

Washington County Weather in September

NOAA 1991-2020 normals for Wesley, 5 km from Washington County

Average highs run from 74°F on September 1 to 63°F on September 30, and lows from 54°F to 45°F. Normal precipitation for the month is 3.76 in over about 11 wet days.

September 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.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
68°F
Average low
50°F
Precipitation
3.76 in
Record high
89°FSep 5, 2023
Record low
30°FSep 21, 2020
Chance of a freeze
9%
Daylight
13 h 14 min to 11 h 46 min
Cloud cover
59%
Humidity
84%
Dew point
53°F
Wind
5.6 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
Sep 174°F54°F82°F 202543°F 201835%0%
Sep 273°F54°F79°F 201541°F 201734%0%
Sep 373°F54°F87°F 201542°F 202434%0%
Sep 473°F53°F81°F 201846°F 202435%0%
Sep 572°F53°F89°F 202344°F 201335%0%
Sep 672°F53°F85°F 202340°F 201335%0%
Sep 772°F52°F81°F 202343°F 202635%0%
Sep 871°F52°F88°F 201543°F 201335%0%
Sep 971°F52°F88°F 201639°F 201335%0%
Sep 1071°F52°F82°F 202638°F 201835%0%
Sep 1170°F51°F82°F 202239°F 201135%0%
Sep 1270°F51°F82°F 202239°F 202035%0%
Sep 1370°F51°F82°F 201739°F 202535%0%
Sep 1469°F50°F80°F 201838°F 201935%0%
Sep 1569°F50°F81°F 201536°F 202035%0%
Sep 1668°F50°F83°F 201540°F 201236%0%
Sep 1768°F49°F84°F 202436°F 201336%0%
Sep 1868°F49°F82°F 201538°F 201936%0%
Sep 1967°F49°F77°F 202432°F 201436%0%
Sep 2067°F48°F78°F 201332°F 202036%0%
Sep 2166°F48°F79°F 201630°F 202037%0%
Sep 2266°F48°F79°F 201632°F 202037%0%
Sep 2366°F47°F81°F 201737°F 201837%0%
Sep 2465°F47°F80°F 201734°F 201838%0%
Sep 2565°F47°F82°F 201131°F 201838%0%
Sep 2664°F46°F80°F 201136°F 201638%0%
Sep 2764°F46°F81°F 201437°F 201538%0%
Sep 2864°F46°F76°F 201437°F 201239%0%
Sep 2963°F45°F79°F 202538°F 201339%0%
Sep 3063°F45°F75°F 202434°F 202239%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).

September 1
sunrise 5:53 AM, sunset 7:07 PM
September 30
sunrise 6:27 AM, sunset 6:13 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00179294 (Wesley), public domain. Records: NOAA GHCN-Daily, station USC00172443, 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.