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Fort Smith September Weather

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

Typical Fort Smith September Weather 1991–2020
Average daily high	85.9 °F
Average daily low	63.5 °F
Average monthly precipitation	4.1 inches
Average monthly snow	none
Daily chance of precipitation	24.4%
Daily chance of snow	0%

Fort Smith September Weather Records 1900–2024
Highest temperature	109 °F	September 3, 2000
Lowest temperature	33 °F	September 29, 1967
Highest daily low	82 °F	September 1, 1922
Lowest daily high	57 °F	September 26, 1984
Hottest average high temperature	96.3 °F	1939
Coldest average high temperature	74.4 °F	1974
Most daily precipitation	4.4 inches	September 21, 2018
Most monthly precipitation	10.5 inches	1934
Most daily snow	none	-
Most monthly snow	none	-

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	90.5	68.6	108	49
September 2	90.2	68.3	109	55
September 3	89.9	68.1	109	50
September 4	89.7	67.9	109	51
September 5	89.5	67.7	104	51
September 6	89.2	67.4	106	47
September 7	88.9	67.1	105	51
September 8	88.6	66.8	102	49
September 9	88.2	66.4	100	48
September 10	87.7	66.0	102	46
September 11	87.4	65.6	104	42
September 12	87.0	65.2	100	47
September 13	86.6	64.7	100	42
September 14	86.3	64.3	100	44
September 15	86.0	63.8	101	46
September 16	85.8	63.3	101	44
September 17	85.6	62.9	99	43
September 18	85.3	62.5	98	40
September 19	84.9	62.1	100	40
September 20	84.6	61.7	100	43
September 21	84.3	61.3	102	39
September 22	83.9	60.9	98	38
September 23	83.5	60.5	97	40
September 24	83.2	60.0	97	36
September 25	82.8	59.6	97	38
September 26	82.4	59.3	96	40
September 27	82.1	58.9	98	38
September 28	81.7	58.5	104	39
September 29	81.4	58.1	100	33
September 30	81.1	57.7	99	37

Weather Station Details

Years	Station	Coordinates
1945–2024	Fort Smith Regional Airport	location
1900–1945	Fort Smith	location