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Anaconda September Weather

Averages and records for weather in Anaconda, Montana in the month of September.

Typical Anaconda September Weather 1991–2020
Average daily high	71.5 °F
Average daily low	39.1 °F
Average monthly precipitation	1.1 inches
Average monthly snow	0.4 inches
Daily chance of precipitation	26.4%
Daily chance of snow	1.2%

Anaconda September Weather Records 1894–2024
Highest temperature	97 °F	September 4, 1924
Lowest temperature	11 °F	September 25, 1926
Highest daily low	62 °F	September 24, 1905
Lowest daily high	31 °F	September 23, 1984
Hottest average high temperature	78.9 °F	2009
Coldest average high temperature	58.5 °F	1912
Most daily precipitation	1.6 inches	September 1, 2008
Most monthly precipitation	3.7 inches	1909
Most daily snow	6.5 inches	September 22, 1985
Most monthly snow	10.7 inches	1984

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	77.1	43.0	93	29
September 2	76.7	42.7	93	31
September 3	76.1	42.5	96	30
September 4	75.7	42.3	97	33
September 5	75.2	42.0	93	31
September 6	74.7	41.7	90	30
September 7	74.1	41.3	91	24
September 8	73.7	40.9	93	30
September 9	73.3	40.7	88	30
September 10	72.8	40.4	87	27
September 11	72.5	40.1	87	25
September 12	72.2	39.9	85	26
September 13	72.0	39.6	87	28
September 14	71.8	39.4	87	22
September 15	71.5	39.2	92	27
September 16	71.3	38.9	92	27
September 17	71.0	38.8	85	27
September 18	70.5	38.5	85	24
September 19	70.0	38.1	88	23
September 20	69.5	37.8	89	13
September 21	68.9	37.5	86	18
September 22	68.5	37.2	85	20
September 23	68.0	36.9	86	18
September 24	67.6	36.6	87	21
September 25	67.1	36.3	86	11
September 26	66.6	35.9	84	20
September 27	66.0	35.6	83	24
September 28	65.5	35.3	84	19
September 29	65.0	34.9	84	12
September 30	64.5	34.7	86	18

Weather Station Details

Years	Station	Coordinates
1894–2024	Anaconda	location