DeKalb County climate

DeKalb County Weather in September

NOAA 1991-2020 normals for Garrett 1 S, 12.2 km from DeKalb County

Average highs run from 77°F on September 1 to 68°F on September 30, and lows from 56°F to 46°F. Normal precipitation for the month is 3.22 in over about 8 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 DeKalb County, 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
51°F
Precipitation
3.22 in
Record high
97°FSep 2, 2011
Record low
28°FSep 23, 1995
Chance of a freeze
16%
Days of 90°F or more
1.1
Daylight
13 h 07 min to 11 h 47 min
Cloud cover
51%
Humidity
72%
Dew point
53°F
Wind
8.5 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 177°F56°F92°F 201136°F 199426%0%
Sep 277°F56°F97°F 201144°F 199426%0%
Sep 377°F56°F96°F 201144°F 202426%0%
Sep 477°F55°F92°F 201141°F 199726%0%
Sep 577°F55°F91°F 201441°F 199726%0%
Sep 676°F55°F93°F 199843°F 200026%0%
Sep 776°F54°F93°F 200240°F 202526%0%
Sep 876°F54°F94°F 200236°F 202526%0%
Sep 976°F54°F93°F 200240°F 201026%0%
Sep 1075°F53°F95°F 201341°F 201726%0%
Sep 1175°F53°F94°F 201339°F 199326%0%
Sep 1275°F53°F91°F 201345°F 200726%0%
Sep 1375°F52°F91°F 199843°F 201526%0%
Sep 1474°F52°F90°F 199436°F 201326%0%
Sep 1574°F52°F91°F 199139°F 201126%0%
Sep 1674°F51°F88°F 199436°F 200726%0%
Sep 1773°F51°F85°F 202137°F 201426%0%
Sep 1873°F50°F84°F 200740°F 199926%0%
Sep 1973°F50°F86°F 200735°F 202026%0%
Sep 2072°F50°F91°F 199836°F 199126%0%
Sep 2172°F49°F90°F 201032°F 199127%0%
Sep 2272°F49°F90°F 200537°F 199127%0%
Sep 2371°F49°F91°F 201028°F 199527%0%
Sep 2471°F48°F92°F 200730°F 198927%0%
Sep 2570°F48°F92°F 200732°F 198927%0%
Sep 2670°F47°F91°F 199837°F 200027%0%
Sep 2770°F47°F88°F 199833°F 198927%0%
Sep 2869°F47°F85°F 199928°F 199128%0%
Sep 2969°F46°F81°F 199837°F 199128%0%
Sep 3068°F46°F83°F 199131°F 199328%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at DeKalb County, 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 7:06 AM, sunset 8:13 PM
September 30
sunrise 7:36 AM, sunset 7:23 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00123207 (Garrett 1 S), public domain. Records: NOAA GHCN-Daily, station USC00123207, 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.