Rupert Idaho Climate Data

Monthly Average Climate Data for Rupert Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.8 °F36.0 °F1.21 in.
February21.8 °F41.3 °F0.7 in.
March28.0 °F51.7 °F1.0 in.
April32.7 °F59.1 °F1.04 in.
May40.7 °F68.7 °F1.43 in.
June47.3 °F77.6 °F0.74 in.
July53.8 °F87.9 °F0.24 in.
August51.8 °F87.0 °F0.4 in.
September43.5 °F77.0 °F0.59 in.
October34.0 °F63.2 °F0.85 in.
November25.2 °F47.8 °F0.88 in.
December18.9 °F36.4 °F1.25 in.
Annual34.7 °F61.1 °F10.33 in.

Climate Data for Rupert Idaho

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate