Pierce September Weather

Averages and records for weather in Pierce, Idaho in the month of September.
Typical Pierce September Weather
1991–2020
Average daily high 72.5 °F
Average daily low 36.3 °F
Average monthly precipitation 1.4 inches
Average monthly snow none
Pierce September Weather Records
1922–2023
Highest temperature 103 °F September 3, 1950
Lowest temperature 10 °F September 29, 1985
Highest daily low 59 °F September 3, 1931
Lowest daily high 40 °F September 22, 1968
Hottest average temperature 6.5 °F
above average
1938
Coldest average temperature -8.7 °F
below average
1970
Most daily precipitation 1.7 inches September 23, 1945
Most monthly precipitation 6.1 inches 1985
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 78.0 39.1 100 27
September 2 77.7 38.9 96 27
September 3 77.3 38.7 103 26
September 4 76.8 38.6 99 27
September 5 76.3 38.3 95 28
September 6 75.8 38.1 95 27
September 7 75.4 37.9 93 23
September 8 75.1 37.6 96 23
September 9 74.8 37.4 93 24
September 10 74.4 37.2 93 26
September 11 74.0 37.0 94 28
September 12 73.7 36.7 93 26
September 13 73.4 36.4 92 25
September 14 73.0 36.2 92 18
September 15 72.8 35.9 93 20
September 16 72.6 35.7 92 21
September 17 72.3 35.6 95 20
September 18 71.9 35.3 97 23
September 19 71.5 35.0 95 23
September 20 71.1 34.8 97 20
September 21 70.7 34.6 93 20
September 22 70.2 34.3 90 22
September 23 69.8 34.1 93 15
September 24 69.3 33.9 91 15
September 25 68.9 33.7 93 19
September 26 68.4 33.5 89 21
September 27 67.9 33.3 86 22
September 28 67.2 33.1 89 19
September 29 66.5 32.9 89 10
September 30 65.9 32.7 88 18
Weather Station Details
Years Station Coordinates
1963–2023 Pierce location
1922–1962 Pierce RS location