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Fort Smith September Weather

Averages and records for weather in Fort Smith, Northwest Territories in the month of September.

Typical Fort Smith September Weather 1991–2020
Average daily high	14.3 °C
Average daily low	3.7 °C
Average monthly precipitation	4.4 cm
Average monthly snow	0.8 cm
Daily chance of precipitation	41.0%
Daily chance of snow	2.3%

Fort Smith September Weather Records 1942–2024
Highest temperature	31.7 °C	September 6, 1951
Lowest temperature	-12.8 °C	September 29, 1961
Highest daily low	15.0 °C	September 1, 1971
Lowest daily high	-2.5 °C	September 28, 1983
Hottest average high temperature	18.2 °C	2011
Coldest average high temperature	7.5 °C	1972
Most daily precipitation	4.7 cm	September 11, 2012
Most monthly precipitation	12.3 cm	1996
Most daily snow	13.5 cm	September 26, 1956
Most monthly snow	24.5 cm	1956

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

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
September 1	17.7	6.3	28.9	-3.3
September 2	17.3	6.0	28.3	-2.8
September 3	17.1	5.8	26.8	-5.0
September 4	16.9	5.7	29.9	-2.8
September 5	16.6	5.5	26.7	-5.0
September 6	16.4	5.3	31.7	-6.1
September 7	16.2	5.1	28.9	-5.7
September 8	16.0	4.9	27.8	-4.4
September 9	15.9	4.7	28.5	-5.7
September 10	15.7	4.5	23.0	-6.1
September 11	15.5	4.4	24.4	-6.1
September 12	15.2	4.2	29.4	-5.2
September 13	15.0	4.0	27.2	-5.3
September 14	14.7	3.9	27.2	-4.4
September 15	14.5	3.7	27.2	-5.6
September 16	14.2	3.5	28.9	-5.0
September 17	13.9	3.3	25.3	-5.8
September 18	13.6	3.0	26.1	-3.9
September 19	13.2	2.8	26.1	-7.5
September 20	13.0	2.6	28.3	-7.6
September 21	12.7	2.4	23.4	-5.0
September 22	12.4	2.2	26.1	-8.3
September 23	12.2	2.0	25.8	-10.0
September 24	11.9	1.8	26.0	-7.2
September 25	11.6	1.5	26.9	-10.6
September 26	11.3	1.4	24.3	-11.1
September 27	11.0	1.2	24.4	-8.3
September 28	10.7	1.0	26.2	-10.0
September 29	10.3	0.8	22.2	-12.8
September 30	10.0	0.5	25.0	-7.8

Weather Station Details

Years	Station	Coordinates
1942–2024	Fort Smith A	location