Coldest Septembers in Idaho since 1895
compiled a ranking of the coldest Septembers in Idaho since 1895 using data from the . Rankings are based on the lowest average temperature in each month. For each of the coldest months listed below, we've included the average state temperature, state-wide highs and lows for the month, and the total precipitation.
#10. September 1941
- Average temperature: 50.1掳F
- Monthly high temperature: 61.8掳F
- Monthly low temperature: 38.5掳F
- Total precipitation: 1.57"
#8. September 1971 (tie)
- Average temperature: 50掳F
- Monthly high temperature: 64掳F
- Monthly low temperature: 36掳F
- Total precipitation: 1.38"
#8. September 1961 (tie)
- Average temperature: 50掳F
- Monthly high temperature: 62.2掳F
- Monthly low temperature: 37.9掳F
- Total precipitation: 2.17"
#6. September 1986 (tie)
- Average temperature: 49.9掳F
- Monthly high temperature: 60.6掳F
- Monthly low temperature: 39.1掳F
- Total precipitation: 2.76"
#6. September 1970 (tie)
- Average temperature: 49.9掳F
- Monthly high temperature: 63.5掳F
- Monthly low temperature: 36.3掳F
- Total precipitation: 2.01"
#5. September 1921
- Average temperature: 49.6掳F
- Monthly high temperature: 63.4掳F
- Monthly low temperature: 35.9掳F
- Total precipitation: 1.02"
#3. September 1985 (tie)
- Average temperature: 49.2掳F
- Monthly high temperature: 60.7掳F
- Monthly low temperature: 37.7掳F
- Total precipitation: 3.24"
#3. September 1926 (tie)
- Average temperature: 49.2掳F
- Monthly high temperature: 63.6掳F
- Monthly low temperature: 34.7掳F
- Total precipitation: 1.14"
#1. September 1965 (tie)
- Average temperature: 48.6掳F
- Monthly high temperature: 61掳F
- Monthly low temperature: 36.2掳F
- Total precipitation: 1.25"
#1. September 1912 (tie)
- Average temperature: 48.6掳F
- Monthly high temperature: 62掳F
- Monthly low temperature: 35.3掳F
- Total precipitation: 1.11"
