Declo Idaho Climate Data

Monthly Average Climate Data for Declo Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.1 °F36.4 °F1.17 in.
February22.2 °F41.6 °F0.71 in.
March28.1 °F51.9 °F1.0 in.
April32.8 °F59.1 °F1.09 in.
May40.6 °F68.5 °F1.48 in.
June47.3 °F77.7 °F0.78 in.
July53.8 °F88.1 °F0.26 in.
August51.8 °F87.2 °F0.45 in.
September43.6 °F77.2 °F0.63 in.
October34.1 °F63.2 °F0.86 in.
November25.3 °F48.0 °F0.87 in.
December19.2 °F36.8 °F1.23 in.
Annual34.8 °F61.3 °F10.53 in.

Climate Data for Declo Idaho

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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