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Kalispell September Weather

Averages and records for weather in Kalispell, Montana in the month of September.

Typical Kalispell September Weather 1991–2020
Average daily high	70.6 °F
Average daily low	38.9 °F
Average monthly precipitation	1.2 inches
Average monthly snow	0.0 inches
Daily chance of precipitation	25.2%
Daily chance of snow	0.14%

Kalispell September Weather Records 1896–2024
Highest temperature	99 °F	September 1, 1967
Lowest temperature	7 °F	September 24, 1926
Highest daily low	62 °F	September 2, 1931
Lowest daily high	28 °F	September 23, 1926
Hottest average high temperature	79.2 °F	1967
Coldest average high temperature	55.7 °F	1965
Most daily precipitation	2.1 inches	September 1, 1896
Most monthly precipitation	4.0 inches	1985
Most daily snow	4.3 inches	September 23, 1926
Most monthly snow	4.3 inches	1926

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
September 1	76.7	42.4	99	32
September 2	76.3	42.1	96	29
September 3	75.8	41.9	97	31
September 4	75.2	41.7	93	27
September 5	74.7	41.5	94	30
September 6	74.3	41.2	93	27
September 7	73.8	41.0	93	27
September 8	73.4	40.7	94	23
September 9	73.1	40.5	92	26
September 10	72.7	40.3	92	27
September 11	72.3	40.0	92	27
September 12	71.9	39.8	90	23
September 13	71.5	39.5	86	23
September 14	71.1	39.2	86	16
September 15	70.8	39.0	89	20
September 16	70.4	38.7	88	23
September 17	70.0	38.4	89	22
September 18	69.5	38.2	90	22
September 19	68.9	37.8	85	23
September 20	68.4	37.5	85	21
September 21	67.9	37.1	87	22
September 22	67.5	36.7	84	22
September 23	67.1	36.5	87	13
September 24	66.7	36.2	89	7
September 25	66.2	35.9	88	17
September 26	65.7	35.5	87	24
September 27	65.1	35.3	86	24
September 28	64.5	34.9	85	18
September 29	64.0	34.6	82	19
September 30	63.5	34.3	82	22

Weather Station Details

Years	Station	Coordinates
1896–2024	Kalispell Glacier Airport	location