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Bismarck August Weather

Averages and records for weather in Bismarck, North Dakota in the month of August.

Typical Bismarck August Weather 1991–2020
Average daily high	83.5 °F
Average daily low	55.8 °F
Average monthly precipitation	2.5 inches
Average monthly snow	none
Daily chance of precipitation	25.8%
Daily chance of snow	0%

Bismarck August Weather Records 1913–2024
Highest temperature	109 °F	August 5, 1941
Lowest temperature	32 °F	August 28, 1935
Highest daily low	76 °F	August 28, 1991
Lowest daily high	52 °F	August 24, 1992
Hottest average high temperature	91.7 °F	1961
Coldest average high temperature	75.9 °F	1977
Most daily precipitation	4.6 inches	August 21, 1998
Most monthly precipitation	9.3 inches	1998
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	84.7	57.5	104	40
August 2	84.5	57.4	101	40
August 3	84.5	57.2	102	37
August 4	84.3	57.0	103	39
August 5	84.2	56.9	109	43
August 6	84.2	56.8	104	42
August 7	84.2	56.7	105	42
August 8	84.2	56.6	105	38
August 9	84.1	56.5	107	38
August 10	84.1	56.5	102	37
August 11	84.1	56.4	104	34
August 12	84.0	56.3	104	33
August 13	83.9	56.3	101	35
August 14	83.8	56.2	104	34
August 15	83.6	56.0	105	38
August 16	83.5	55.8	102	41
August 17	83.4	55.7	106	39
August 18	83.3	55.5	106	37
August 19	83.2	55.4	103	39
August 20	83.1	55.2	102	37
August 21	82.9	55.1	104	39
August 22	82.7	54.9	106	37
August 23	82.4	54.6	102	37
August 24	82.2	54.3	99	33
August 25	81.9	54.0	102	35
August 26	81.6	53.7	103	32
August 27	81.3	53.4	107	33
August 28	81.1	53.1	101	32
August 29	80.8	52.9	104	33
August 30	80.4	52.5	100	37
August 31	80.0	52.2	102	34

Weather Station Details

Years	Station	Coordinates
1948–2024	Bismarck	location
1913–1947	Mandan Experimental Station	location