Fall River County climate

Fall River County Weather in September

NOAA 1991-2020 normals for Hot Springs, 22.5 km from Fall River County

Average highs run from 85°F on September 1 to 73°F on September 30, and lows from 51°F to 40°F. Normal precipitation for the month is 1.40 in over about 5 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 Fall River County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
80°F
Average low
45°F
Precipitation
1.40 in
Snowfall
0.1 in
Record high
94°FSep 5, 2020
Record low
21°FSep 9, 2020
Chance of a freeze
61%
Days of 90°F or more
5.7
Daylight
13 h 11 min to 11 h 46 min
Cloud cover
48%
Humidity
50%
Dew point
41°F
Wind
9.8 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 185°F51°F89°F 201234°F 200620%0%
Sep 284°F50°F90°F 202334°F 200619%0%
Sep 384°F50°F92°F 202431°F 200819%0%
Sep 484°F50°F92°F 202232°F 201119%0%
Sep 584°F49°F94°F 202034°F 202519%0%
Sep 683°F49°F86°F 200230°F 202519%0%
Sep 783°F49°F93°F 202230°F 201019%0%
Sep 883°F48°F88°F 200527°F 202019%0%
Sep 983°F48°F89°F 202421°F 202019%0%
Sep 1082°F48°F92°F 202127°F 202019%0%
Sep 1182°F47°F85°F 202136°F 201019%0%
Sep 1282°F47°F88°F 201833°F 199919%0%
Sep 1381°F47°F85°F 201525°F 199919%0%
Sep 1481°F46°F86°F 201529°F 200719%0%
Sep 1580°F46°F87°F 200031°F 199919%0%
Sep 1680°F45°F86°F 201932°F 200619%0%
Sep 1780°F45°F89°F 200030°F 201719%0%
Sep 1879°F45°F86°F 200428°F 200320%0%
Sep 1979°F44°F86°F 202030°F 200620%0%
Sep 2078°F44°F83°F 201631°F 201720%1%
Sep 2178°F43°F81°F 201527°F 200220%1%
Sep 2277°F43°F83°F 202027°F 200020%1%
Sep 2377°F43°F83°F 201824°F 200020%1%
Sep 2476°F42°F83°F 202022°F 200020%1%
Sep 2576°F42°F83°F 202425°F 200020%1%
Sep 2675°F41°F88°F 202429°F 199920%1%
Sep 2775°F41°F87°F 202125°F 199920%1%
Sep 2874°F41°F85°F 201025°F 200620%1%
Sep 2974°F40°F89°F 202427°F 199920%1%
Sep 3073°F40°F79°F 200527°F 200320%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Fall River 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 6:18 AM, sunset 7:29 PM
September 30
sunrise 6:51 AM, sunset 6:37 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00394007 (Hot Springs), public domain. Records: NOAA GHCN-Daily, station USW00094032, 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.