Decatur climate

Decatur Weather in September

NOAA 1991-2020 normals for Decatur 7NE, 17.9 km from Decatur

Average highs run from 87°F on September 1 to 79°F on September 30, and lows from 63°F to 53°F. Normal precipitation for the month is 4.35 in over about 7 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 Decatur, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
84°F
Average low
59°F
Precipitation
4.35 in
Record high
100°FSep 1, 1957
Record low
30°FSep 30, 1967
Chance of a freeze
0%
Days of 90°F or more
7.5
Daylight
12 h 55 min to 11 h 51 min
Cloud cover
50%
Humidity
69%
Dew point
59°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
Sep 187°F63°F100°F 195754°F 198426%0%
Sep 287°F63°F96°F 195750°F 198726%0%
Sep 387°F63°F99°F 201149°F 201726%0%
Sep 487°F63°F98°F 202651°F 201726%0%
Sep 587°F62°F97°F 202651°F 196725%0%
Sep 686°F62°F97°F 198050°F 198425%0%
Sep 786°F62°F96°F 198049°F 198425%0%
Sep 886°F62°F97°F 199947°F 201724%0%
Sep 986°F61°F96°F 199949°F 195824%0%
Sep 1085°F61°F94°F 201649°F 195824%0%
Sep 1185°F61°F96°F 200242°F 197624%0%
Sep 1285°F60°F93°F 196244°F 197624%0%
Sep 1385°F60°F95°F 201946°F 196823%0%
Sep 1484°F60°F98°F 201945°F 197523%0%
Sep 1584°F59°F94°F 195643°F 196423%0%
Sep 1684°F59°F95°F 198047°F 198523%0%
Sep 1784°F59°F95°F 199147°F 198423%0%
Sep 1883°F58°F95°F 201943°F 198123%0%
Sep 1983°F58°F96°F 201942°F 197323%0%
Sep 2083°F58°F92°F 197842°F 198123%0%
Sep 2182°F57°F92°F 202445°F 198124%0%
Sep 2282°F57°F96°F 198036°F 198324%0%
Sep 2382°F56°F92°F 198038°F 198324%0%
Sep 2481°F56°F92°F 201037°F 196324%0%
Sep 2581°F56°F93°F 201037°F 196324%0%
Sep 2681°F55°F92°F 201936°F 201224%0%
Sep 2780°F55°F90°F 198642°F 200024%0%
Sep 2880°F54°F92°F 201940°F 198524%0%
Sep 2980°F54°F90°F 201938°F 196224%0%
Sep 3079°F53°F94°F 201930°F 196724%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Decatur, 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 (EDT).

September 1
sunrise 7:11 AM, sunset 8:06 PM
September 30
sunrise 7:33 AM, sunset 7:24 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00402388 (Decatur 7NE), public domain. Records: NOAA GHCN-Daily, station USC00402360, 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.