Forrest County climate

Forrest County Weather in September

NOAA 1991-2020 normals for Hattiesburg 5SW, 10.6 km from Forrest County

Average highs run from 90°F on September 1 to 85°F on September 30, and lows from 70°F to 63°F. Normal precipitation for the month is 4.82 in over about 9 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 Forrest County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
88°F
Average low
67°F
Precipitation
4.82 in
Record high
102°FSep 7, 2023
Record low
47°FSep 27, 2000
Chance of a freeze
0%
Days of 90°F or more
13.7
Daylight
12 h 47 min to 11 h 53 min
Cloud cover
46%
Humidity
79%
Dew point
68°F
Wind
3.4 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 190°F70°F98°F 200062°F 200932%0%
Sep 290°F70°F98°F 202663°F 200931%0%
Sep 390°F70°F99°F 202664°F 201731%0%
Sep 490°F70°F100°F 200064°F 201031%0%
Sep 590°F70°F98°F 201558°F 201031%0%
Sep 690°F69°F99°F 202357°F 201130%0%
Sep 790°F69°F102°F 202353°F 201130%0%
Sep 890°F69°F97°F 201954°F 201130%0%
Sep 989°F69°F96°F 201553°F 201129%0%
Sep 1089°F69°F95°F 201654°F 201129%0%
Sep 1189°F68°F98°F 200258°F 201129%0%
Sep 1289°F68°F97°F 202360°F 201729%0%
Sep 1389°F68°F97°F 201952°F 201528%0%
Sep 1488°F68°F96°F 202649°F 201528%0%
Sep 1588°F67°F97°F 201858°F 201528%0%
Sep 1688°F67°F97°F 201955°F 200728%0%
Sep 1788°F67°F97°F 201953°F 200328%0%
Sep 1888°F67°F99°F 201952°F 200027%0%
Sep 1987°F66°F98°F 200553°F 200027%0%
Sep 2087°F66°F98°F 201556°F 201227%0%
Sep 2187°F66°F97°F 202553°F 200627%0%
Sep 2287°F65°F96°F 200659°F 202126%0%
Sep 2386°F65°F97°F 202554°F 202126%0%
Sep 2486°F65°F96°F 201052°F 202126%0%
Sep 2586°F64°F96°F 201652°F 200125%0%
Sep 2686°F64°F95°F 201948°F 200125%0%
Sep 2785°F64°F93°F 200547°F 200025%0%
Sep 2885°F63°F94°F 201948°F 200024%0%
Sep 2985°F63°F95°F 201948°F 200324%0%
Sep 3085°F63°F95°F 201947°F 200324%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Forrest 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 (CDT).

September 1
sunrise 6:33 AM, sunset 7:20 PM
September 30
sunrise 6:50 AM, sunset 6:43 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00223887 (Hattiesburg 5SW), public domain. Records: NOAA GHCN-Daily, station USW00013833, 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.