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Moscow September Weather

Averages and records for weather in Moscow, Idaho in the month of September.

Typical Moscow September Weather 1991–2020
Average daily high	76.3 °F
Average daily low	42.5 °F
Average monthly precipitation	1.0 inches
Average monthly snow	none
Daily chance of precipitation	18.3%
Daily chance of snow	0%

Moscow September Weather Records 1893–2024
Highest temperature	100 °F	September 5, 1973
Lowest temperature	20 °F	September 25, 1934
Highest daily low	66 °F	September 13, 1959
Lowest daily high	38 °F	September 24, 1934
Hottest average high temperature	83.9 °F	1990
Coldest average high temperature	61.0 °F	1941
Most daily precipitation	1.9 inches	September 16, 1947
Most monthly precipitation	4.2 inches	1940
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
September 1	81.4	45.3	98	29
September 2	81.0	45.1	98	29
September 3	80.6	45.0	99	33
September 4	80.2	44.8	99	30
September 5	79.7	44.6	100	32
September 6	79.2	44.3	96	30
September 7	78.9	44.1	95	29
September 8	78.6	43.8	96	26
September 9	78.3	43.7	92	29
September 10	78.0	43.5	94	27
September 11	77.6	43.4	95	25
September 12	77.2	43.2	94	26
September 13	76.8	42.9	90	25
September 14	76.6	42.6	94	22
September 15	76.4	42.5	95	24
September 16	76.1	42.4	93	27
September 17	75.8	42.2	98	26
September 18	75.3	41.9	98	25
September 19	74.8	41.7	92	26
September 20	74.2	41.4	91	28
September 21	73.8	41.1	95	25
September 22	73.3	40.8	94	26
September 23	72.9	40.6	94	25
September 24	72.5	40.5	94	23
September 25	72.0	40.3	91	20
September 26	71.4	40.0	90	25
September 27	70.8	39.8	91	24
September 28	70.2	39.5	91	23
September 29	69.6	39.3	92	21
September 30	69.1	39.1	88	25

Weather Station Details

Years	Station	Coordinates
1893–2024	University of Idaho	location