Windham climate

Windham Weather in September

NOAA 1991-2020 normals for Hiram, 8.6 km from Windham

Average highs run from 78°F on September 1 to 68°F on September 30, and lows from 56°F to 46°F. Normal precipitation for the month is 4.04 in over about 10 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 Windham, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
73°F
Average low
52°F
Precipitation
4.04 in
Record high
91°FSep 2, 2015
Record low
35°FSep 19, 2020
Chance of a freeze
2%
Daylight
13 h 06 min to 11 h 48 min
Cloud cover
59%
Humidity
71%
Dew point
53°F
Wind
5.1 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
Sep 178°F56°F90°F 201545°F 202530%0%
Sep 277°F56°F91°F 201549°F 202530%0%
Sep 377°F56°F90°F 201544°F 202430%0%
Sep 477°F55°F90°F 201844°F 202430%0%
Sep 577°F55°F91°F 201848°F 201930%0%
Sep 677°F55°F91°F 201848°F 201931%0%
Sep 776°F55°F90°F 201543°F 202531%0%
Sep 876°F54°F91°F 201539°F 202531%0%
Sep 976°F54°F90°F 201539°F 202531%0%
Sep 1075°F54°F84°F 201638°F 201731%0%
Sep 1175°F53°F88°F 201339°F 201731%0%
Sep 1275°F53°F89°F 201944°F 201732%0%
Sep 1374°F53°F83°F 202144°F 201732%0%
Sep 1474°F52°F87°F 201944°F 201732%0%
Sep 1574°F52°F84°F 201841°F 202332%
Sep 1673°F52°F83°F 201841°F 202332%
Sep 1773°F51°F84°F 202542°F 202032%
Sep 1873°F51°F84°F 201747°F 202532%
Sep 1972°F51°F84°F 201735°F 202032%
Sep 2072°F50°F85°F 202535°F 202032%
Sep 2171°F50°F86°F 201637°F 202033%
Sep 2271°F49°F88°F 201737°F 202033%
Sep 2371°F49°F86°F 201637°F 202033%
Sep 2470°F49°F90°F 201742°F 201433%
Sep 2570°F48°F90°F 201742°F 201433%
Sep 2669°F48°F89°F 201742°F 201434%
Sep 2769°F48°F90°F 201745°F 201934%
Sep 2869°F47°F89°F 201745°F 201934%
Sep 2968°F47°F84°F 202542°F 201734%
Sep 3068°F46°F82°F 202538°F 202234%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Windham, 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 6:51 AM, sunset 7:57 PM
September 30
sunrise 7:20 AM, sunset 7:08 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00333780 (Hiram), public domain. Records: NOAA GHCN-Daily, station USC00336949, 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.