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
St. Maries September Weather Records
1897–2023
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 temperature 9.2 °F
above average
1990
Coldest average temperature -8.5 °F
below average
1926
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)
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
1897–2023 Saint Maries location