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Hamilton August Weather

Averages and records for weather in Hamilton, Montana in the month of August.

Typical Hamilton August Weather 1991–2020
Average daily high	84.2 °F
Average daily low	48.7 °F
Average monthly precipitation	0.8 inches
Daily chance of precipitation	22.6%

Hamilton August Weather Records 1895–2024
Highest temperature	103 °F	August 24, 1969
Lowest temperature	19 °F	August 28, 1895
Highest daily low	78 °F	August 17, 1903
Lowest daily high	48 °F	August 31, 1895
Hottest average high temperature	91.3 °F	1901
Coldest average high temperature	74.5 °F	1907
Most daily precipitation	1.7 inches	August 20, 1974
Most monthly precipitation	3.7 inches	1922

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	86.7	50.7	101	39
August 2	86.6	50.6	99	36
August 3	86.5	50.5	101	38
August 4	86.4	50.4	101	40
August 5	86.3	50.3	101	37
August 6	86.2	50.3	100	38
August 7	86.1	50.2	98	36
August 8	85.9	50.0	100	39
August 9	85.7	49.9	100	39
August 10	85.4	49.8	101	40
August 11	85.2	49.6	99	38
August 12	85.0	49.4	101	35
August 13	84.8	49.2	99	36
August 14	84.5	49.0	101	38
August 15	84.3	48.9	100	36
August 16	84.2	48.7	98	29
August 17	83.9	48.5	99	24
August 18	83.6	48.3	96	19
August 19	83.4	48.1	99	19
August 20	83.1	47.9	96	28
August 21	82.9	47.7	98	30
August 22	82.6	47.5	98	22
August 23	82.3	47.3	102	28
August 24	81.9	47.2	103	28
August 25	81.6	46.9	97	26
August 26	81.2	46.6	95	22
August 27	80.8	46.4	97	24
August 28	80.5	46.2	95	19
August 29	80.2	46.0	98	21
August 30	79.9	45.7	96	27
August 31	79.6	45.4	96	27

Weather Station Details

Years	Station	Coordinates
1895–2024	Hamilton	location