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Lead September Weather

Averages and records for weather in Lead, South Dakota in the month of September.

Typical Lead September Weather 1991–2020
Average daily high	70.1 °F
Average daily low	46.3 °F
Average monthly precipitation	2.0 inches
Average monthly snow	1.8 inches
Daily chance of precipitation	27.9%
Daily chance of snow	2.0%

Lead September Weather Records 1909–2024
Highest temperature	96 °F	September 8, 2022
Lowest temperature	12 °F	September 26, 1934
Highest daily low	72 °F	September 2, 1960
Lowest daily high	22 °F	September 24, 1926
Hottest average high temperature	77.0 °F	2015
Coldest average high temperature	53.9 °F	1965
Most daily precipitation	3.4 inches	September 5, 1971
Most monthly precipitation	6.8 inches	2006
Most daily snow	8.0 inches	September 16, 1965
Most monthly snow	18.0 inches	1965

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	75.8	51.5	92	34
September 2	75.7	51.4	92	33
September 3	75.5	51.2	94	32
September 4	75.1	50.9	94	29
September 5	74.6	50.5	95	29
September 6	74.2	50.1	96	28
September 7	73.6	49.6	91	29
September 8	73.0	49.1	96	26
September 9	72.5	48.7	90	23
September 10	72.1	48.2	90	28
September 11	71.7	47.8	91	23
September 12	71.2	47.4	89	24
September 13	70.8	47.1	88	23
September 14	70.4	46.7	91	25
September 15	70.1	46.4	92	26
September 16	69.8	46.1	88	22
September 17	69.5	45.7	89	23
September 18	68.8	45.3	91	24
September 19	68.2	44.8	89	23
September 20	67.6	44.3	88	21
September 21	67.0	43.9	86	18
September 22	66.5	43.4	86	22
September 23	66.1	43.1	85	21
September 24	65.7	42.7	88	12
September 25	65.1	42.3	86	14
September 26	64.7	41.9	89	12
September 27	64.3	41.5	84	20
September 28	63.8	41.1	86	17
September 29	63.4	40.6	86	19
September 30	62.8	40.2	84	15

Weather Station Details

Years	Station	Coordinates
1909–2024	Lead	location