Salmon September Weather

Averages and records for weather in Salmon, Idaho in the month of September.
Typical Salmon September Weather
1991–2020
Average daily high 74.8 °F
Average daily low 41.0 °F
Average monthly precipitation 0.7 inches
Average monthly snow 0.2 inches
Salmon September Weather Records
1967–2023
Highest temperature 98 °F September 6, 2020
Lowest temperature 20 °F September 30, 1985
Highest daily low 64 °F September 6, 1998
Lowest daily high 35 °F September 30, 2019
Hottest average temperature 5.6 °F
above average
1990
Coldest average temperature -5.4 °F
below average
1970
Most daily precipitation 0.9 inches September 6, 2001
Most monthly precipitation 2.2 inches 1985
Most daily snow 5.0 inches September 30, 2019
Most monthly snow 5.0 inches 2019
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 80.8 45.4 96 35
September 2 80.5 45.1 95 33
September 3 80.0 44.9 97 35
September 4 79.5 44.6 92 33
September 5 79.0 44.3 97 34
September 6 78.6 43.9 98 32
September 7 78.1 43.6 93 28
September 8 77.7 43.3 97 29
September 9 77.3 43.1 92 29
September 10 76.9 42.8 91 29
September 11 76.5 42.5 89 32
September 12 76.1 42.1 91 29
September 13 75.7 41.8 90 29
September 14 75.3 41.5 90 27
September 15 74.9 41.1 95 26
September 16 74.6 40.8 94 28
September 17 74.2 40.5 90 29
September 18 73.7 40.2 91 25
September 19 73.2 39.9 89 26
September 20 72.7 39.6 92 21
September 21 72.1 39.2 89 26
September 22 71.6 38.9 86 24
September 23 71.2 38.7 85 25
September 24 70.8 38.4 87 27
September 25 70.3 38.1 90 22
September 26 69.8 37.7 89 23
September 27 69.3 37.4 85 28
September 28 68.7 37.1 86 22
September 29 68.1 36.8 85 22
September 30 67.6 36.4 84 20
Weather Station Details
Years Station Coordinates
1967–2023 Salmon KSRA location