World Resorts USA Kalispell Weather

Kalispell weather in September

Weather in Kalispell: September

Average day temperature: 69.0°F
Average night temperature: 48.9°F
Number of sunny days: 17 days
Day length: 11.7 - 13.4 hours
Number of rainy days: 1 day
Precipitation totals: 0.9 in.

Air temperature in September, °F

Show year:
2026
2025
2024

The highest day temperature during September of 2026 was 78°F. At the same time the lowest night temperature was 33°F. Daily and nightly averages during September were 63.5°F and 46.7°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Kalispell in September is 0.9 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 3.6 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 8.3.

Best time for vacation in Kalispell

Sunniest months:
July 25 days
August 20 days
September 17 days
Warmest months:
July 81.4 °F
August 78.5 °F
September 69.0 °F
Coldest months:
January 26.4 °F
February 28.2 °F
December 28.7 °F
Rainiest months:
June 3 days
May 2 days
September 1 day
Windiest months:
April 4.3 mph
May 4.3 mph
June 4.3 mph

Kalispell on a weather map

Kalispell
+39°F
S 1 mph
Feels like: +39°F
Precip.: 35%
Places in USA:
Name
°F
+63°F
+66°F
+77°F
+66°F
+68°F
+84°F
+70°F
+64°F
+68°F
+59°F
+68°F
+82°F
+82°F
+81°F
+66°F
24 Hours Forecast
Kalispell
Local time: 10:42
October 29, thursday
1200
39°F
S
1 mph
1500
41°F
SE
3 mph
1800
37°F
SE
2 mph
2100
32°F
S
2 mph
October 30, friday
0000
28°F
S
3 mph
0300
28°F
S
2 mph
0600
28°F
S
3 mph
0900
28°F
S
2 mph
Units of measurement: °C / °F