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Spearfish August Weather

Averages and records for weather in Spearfish, South Dakota in the month of August.

Typical Spearfish August Weather 1991–2020
Average daily high	84.1 °F
Average daily low	58.0 °F
Average monthly precipitation	2.0 inches
Average monthly snow	none
Daily chance of precipitation	23.3%
Daily chance of snow	0%

Spearfish August Weather Records 1893–2024
Highest temperature	104 °F	August 8, 2001
Lowest temperature	32 °F	August 26, 1906
Highest daily low	81 °F	August 31, 2008
Lowest daily high	53 °F	August 31, 1994
Hottest average high temperature	91.5 °F	1959
Coldest average high temperature	75.7 °F	1927
Most daily precipitation	3.7 inches	August 3, 1922
Most monthly precipitation	5.1 inches	1972
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
August 1	85.6	59.8	104	42
August 2	85.4	59.7	102	43
August 3	85.3	59.5	104	39
August 4	85.2	59.4	104	41
August 5	85.1	59.3	103	39
August 6	85.0	59.2	100	41
August 7	85.0	59.1	101	42
August 8	85.0	59.0	104	41
August 9	84.9	59.0	102	41
August 10	84.9	58.8	103	33
August 11	84.8	58.7	103	40
August 12	84.8	58.7	104	38
August 13	84.8	58.6	102	40
August 14	84.7	58.6	101	44
August 15	84.5	58.4	101	47
August 16	84.3	58.2	98	45
August 17	84.2	58.1	100	40
August 18	84.0	58.0	101	41
August 19	83.9	57.8	101	41
August 20	84.0	57.8	100	37
August 21	83.9	57.6	99	39
August 22	83.7	57.4	102	39
August 23	83.5	57.2	102	38
August 24	83.3	56.9	98	36
August 25	83.1	56.7	99	37
August 26	82.8	56.4	102	32
August 27	82.5	56.1	101	39
August 28	82.3	55.8	99	33
August 29	82.0	55.5	99	37
August 30	81.7	55.2	101	33
August 31	81.4	54.9	102	37

Weather Station Details

Years	Station	Coordinates
1893–2024	Spearfish	location