Idaho Falls Idaho Climate Data

Monthly Average Climate Data for Idaho Falls Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.4 °F29.2 °F1.12 in.
February15.7 °F34.2 °F0.77 in.
March25.2 °F46.9 °F1.1 in.
April31.1 °F57.2 °F1.18 in.
May38.8 °F66.5 °F1.71 in.
June45.2 °F75.1 °F1.24 in.
July50.6 °F85.6 °F0.56 in.
August48.7 °F85.2 °F0.62 in.
September41.3 °F74.7 °F1.01 in.
October31.5 °F59.9 °F1.15 in.
November22.3 °F43.3 °F0.83 in.
December13.7 °F30.6 °F0.98 in.
Annual31.4 °F57.4 °F12.27 in.

Climate Data for Idaho Falls Idaho

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate