Whitefish climate

Whitefish Weather in September

NOAA 1991-2020 normals for Whitefish, 1.6 km from Whitefish

Average highs run from 75°F on September 1 to 62°F on September 30, and lows from 44°F to 36°F. Normal precipitation for the month is 1.25 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 Whitefish, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
69°F
Average low
40°F
Precipitation
1.25 in
Record high
99°FSep 1, 1967
Record low
7°FSep 24, 1926
Chance of a freeze
71%
Days of 90°F or more
0.5
Daylight
13 h 24 min to 11 h 42 min
Cloud cover
54%
Humidity
58%
Dew point
36°F
Wind
4.0 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 175°F44°F99°F 196732°F 199924%0%
Sep 274°F44°F96°F 199829°F 195924%0%
Sep 374°F44°F97°F 198831°F 197424%0%
Sep 474°F43°F93°F 199827°F 196224%0%
Sep 573°F43°F94°F 196730°F 195624%0%
Sep 673°F43°F93°F 199827°F 196924%0%
Sep 772°F43°F93°F 202227°F 199224%0%
Sep 872°F42°F94°F 195823°F 202024%0%
Sep 972°F42°F92°F 196926°F 195924%0%
Sep 1071°F42°F92°F 196927°F 197224%0%
Sep 1171°F42°F92°F 195827°F 192124%0%
Sep 1270°F41°F90°F 195923°F 201424%0%
Sep 1370°F41°F86°F 194323°F 197025%0%
Sep 1470°F41°F86°F 201316°F 197025%0%
Sep 1569°F40°F89°F 199820°F 197025%0%
Sep 1669°F40°F88°F 200923°F 197325%0%
Sep 1768°F40°F89°F 198122°F 197325%0%
Sep 1868°F40°F90°F 198122°F 197125%0%
Sep 1967°F39°F85°F 200823°F 198325%0%
Sep 2067°F39°F85°F 192221°F 193425%0%
Sep 2167°F39°F87°F 196722°F 197125%0%
Sep 2266°F38°F84°F 190522°F 200025%0%
Sep 2366°F38°F87°F 201113°F 192625%0%
Sep 2465°F38°F89°F 20147°F 192625%0%
Sep 2565°F38°F88°F 200117°F 192625%0%
Sep 2664°F37°F87°F 195224°F 190026%0%
Sep 2764°F37°F86°F 195724°F 198526%0%
Sep 2863°F37°F85°F 196718°F 198526%0%
Sep 2963°F36°F82°F 196719°F 198526%0%
Sep 3062°F36°F82°F 196322°F 197126%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Whitefish, 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 (MDT).

September 1
sunrise 6:55 AM, sunset 8:19 PM
September 30
sunrise 7:36 AM, sunset 7:18 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00248902 (Whitefish), public domain. Records: NOAA GHCN-Daily, station USC00244558, 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.