Coldest Mays in Idaho since 1895

Written by:
May 5, 2026
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Coldest Mays in Idaho since 1895

compiled a ranking of the coldest Mays 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. May 1977
- Average temperature: 45.7掳F
- Monthly high temperature: 56掳F
- Monthly low temperature: 35.3掳F
- Total precipitation: 3.28"

#9. May 1975
- Average temperature: 45.6掳F
- Monthly high temperature: 57.2掳F
- Monthly low temperature: 33.9掳F
- Total precipitation: 1.73"

#8. May 1908
- Average temperature: 45.4掳F
- Monthly high temperature: 55.7掳F
- Monthly low temperature: 35.1掳F
- Total precipitation: 3.27"

#7. May 1959
- Average temperature: 45.2掳F
- Monthly high temperature: 56.8掳F
- Monthly low temperature: 33.6掳F
- Total precipitation: 2.72"

#5. May 1953 (tie)
- Average temperature: 44.9掳F
- Monthly high temperature: 56.7掳F
- Monthly low temperature: 33.1掳F
- Total precipitation: 2.99"

#5. May 1899 (tie)
- Average temperature: 44.9掳F
- Monthly high temperature: 56.4掳F
- Monthly low temperature: 33.5掳F
- Total precipitation: 2.05"

#4. May 1933
- Average temperature: 44.8掳F
- Monthly high temperature: 56.2掳F
- Monthly low temperature: 33.4掳F
- Total precipitation: 2.2"

#2. May 2010 (tie)
- Average temperature: 44.1掳F
- Monthly high temperature: 55.3掳F
- Monthly low temperature: 32.9掳F
- Total precipitation: 2.77"

#2. May 1916 (tie)
- Average temperature: 44.1掳F
- Monthly high temperature: 56.3掳F
- Monthly low temperature: 31.8掳F
- Total precipitation: 1.73"

#1. May 1896
- Average temperature: 43.7掳F
- Monthly high temperature: 54.3掳F
- Monthly low temperature: 33.1掳F
- Total precipitation: 3.6"

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