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St. Maries September Weather

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

Typical St. Maries September Weather 1991–2020
Average daily high	73.5 °F
Average daily low	43.8 °F
Average monthly precipitation	1.1 inches
Average monthly snow	none
Daily chance of precipitation	21.2%
Daily chance of snow	0%

St. Maries September Weather Records 1897–2024
Highest temperature	104 °F	September 3, 1988
Lowest temperature	18 °F	September 19, 1926
Highest daily low	65 °F	September 7, 1988
Lowest daily high	38 °F	September 30, 2019
Hottest average high temperature	88.3 °F	1990
Coldest average high temperature	62.0 °F	1985
Most daily precipitation	1.4 inches	September 17, 1985
Most monthly precipitation	4.9 inches	1927
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	79.0	47.3	103	34
September 2	78.7	47.0	99	32
September 3	78.2	46.8	104	30
September 4	77.8	46.6	102	29
September 5	77.3	46.3	103	29
September 6	76.8	46.1	98	29
September 7	76.5	45.8	98	28
September 8	76.1	45.5	97	29
September 9	75.8	45.2	97	30
September 10	75.4	45.0	97	25
September 11	75.1	44.8	97	28
September 12	74.8	44.6	98	29
September 13	74.4	44.3	97	26
September 14	74.1	44.0	94	25
September 15	73.9	43.8	96	26
September 16	73.5	43.6	94	28
September 17	73.2	43.4	99	22
September 18	72.8	43.1	95	21
September 19	72.4	42.8	97	18
September 20	71.9	42.5	93	26
September 21	71.3	42.2	94	28
September 22	70.9	41.9	96	27
September 23	70.5	41.6	95	25
September 24	70.0	41.4	96	19
September 25	69.5	41.1	96	21
September 26	69.0	40.8	94	24
September 27	68.4	40.5	91	27
September 28	67.8	40.2	94	20
September 29	67.2	40.0	92	21
September 30	66.6	39.7	88	23

Weather Station Details

Years	Station	Coordinates
1897–2024	Saint Maries	location