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International Falls September Weather

Averages and records for weather in International Falls, Minnesota in the month of September.

Typical International Falls September Weather 1991–2020
Average daily high	66.4 °F
Average daily low	42.7 °F
Average monthly precipitation	3.0 inches
Average monthly snow	0.1 inches
Daily chance of precipitation	40.8%
Daily chance of snow	0.46%

International Falls September Weather Records 1906–2024
Highest temperature	96 °F	September 7, 1906
Lowest temperature	19 °F	September 15, 2011
Highest daily low	73 °F	September 8, 2002
Lowest daily high	35 °F	September 26, 1926
Hottest average high temperature	77.3 °F	1920
Coldest average high temperature	54.8 °F	1965
Most daily precipitation	3.3 inches	September 1, 1973
Most monthly precipitation	7.4 inches	1961
Most daily snow	2.0 inches	September 26, 1912
Most monthly snow	2.0 inches	1912

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	72.2	47.5	90	32
September 2	72.0	47.2	92	32
September 3	71.7	47.0	88	28
September 4	71.4	46.7	91	31
September 5	71.1	46.5	92	29
September 6	70.6	46.2	93	28
September 7	70.2	45.9	96	30
September 8	69.7	45.4	92	29
September 9	69.2	45.0	93	25
September 10	68.8	44.7	93	25
September 11	68.4	44.4	86	29
September 12	68.1	44.0	87	26
September 13	67.7	43.7	89	25
September 14	67.1	43.3	88	27
September 15	66.7	42.8	84	19
September 16	66.2	42.5	87	23
September 17	65.8	42.0	84	23
September 18	65.3	41.7	83	20
September 19	64.7	41.3	86	27
September 20	64.2	40.8	85	20
September 21	63.6	40.4	83	26
September 22	63.1	40.1	86	24
September 23	62.7	39.8	86	21
September 24	62.4	39.5	82	25
September 25	61.9	39.1	85	23
September 26	61.5	38.8	83	20
September 27	61.2	38.5	91	23
September 28	60.8	38.2	84	24
September 29	60.4	37.8	85	23
September 30	59.8	37.4	82	24

Weather Station Details

Years	Station	Coordinates
1906–2024	International Falls International Airport	location