Campbell County climate

Campbell County Weather in September

NOAA 1991-2020 normals for Gillette 4SE, 8.2 km from Campbell County

Average highs run from 82°F on September 1 to 68°F on September 30, and lows from 52°F to 41°F. Normal precipitation for the month is 1.25 in over about 6 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 Campbell County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
75°F
Average low
46°F
Precipitation
1.25 in
Snowfall
0.5 in
Record high
102°FSep 7, 2022
Record low
24°FSep 14, 2007
Chance of a freeze
50%
Days of 90°F or more
2.7
Daylight
13 h 13 min to 11 h 45 min
Cloud cover
48%
Humidity
47%
Dew point
37°F
Wind
10.1 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 182°F52°F96°F 202236°F 202020%0%
Sep 281°F51°F99°F 202435°F 200620%0%
Sep 381°F51°F98°F 200736°F 201020%0%
Sep 481°F51°F101°F 202237°F 201720%0%
Sep 580°F50°F100°F 202034°F 201720%1%
Sep 680°F50°F97°F 202631°F 201020%1%
Sep 780°F50°F102°F 202233°F 202021%1%
Sep 879°F49°F96°F 199831°F 202021%1%
Sep 979°F49°F95°F 199828°F 202021%1%
Sep 1078°F49°F100°F 202131°F 200721%1%
Sep 1178°F48°F92°F 201732°F 201422%1%
Sep 1277°F48°F94°F 200429°F 201422%1%
Sep 1377°F48°F93°F 200629°F 200722%1%
Sep 1477°F47°F92°F 202024°F 200722%1%
Sep 1576°F47°F94°F 200032°F 199922%1%
Sep 1676°F46°F98°F 200033°F 200623%2%
Sep 1775°F46°F91°F 200032°F 201223%2%
Sep 1874°F46°F93°F 202133°F 200323%2%
Sep 1974°F45°F91°F 202030°F 200623%2%
Sep 2073°F45°F86°F 200732°F 201123%2%
Sep 2173°F44°F85°F 202531°F 199923%2%
Sep 2272°F44°F89°F 200729°F 200024%2%
Sep 2372°F44°F86°F 201128°F 200024%3%
Sep 2471°F43°F93°F 202028°F 200724%3%
Sep 2571°F43°F97°F 202431°F 200224%3%
Sep 2670°F42°F94°F 202427°F 199924%3%
Sep 2769°F42°F91°F 202127°F 199924%3%
Sep 2869°F42°F93°F 200127°F 200925%3%
Sep 2968°F41°F95°F 202428°F 200825%4%
Sep 3068°F41°F86°F 201129°F 200325%4%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Campbell County, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

September 1
sunrise 6:25 AM, sunset 7:38 PM
September 30
sunrise 6:59 AM, sunset 6:44 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00483855 (Gillette 4SE), public domain. Records: NOAA GHCN-Daily, station USW00094023, 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.