Fairfield Idaho Climate Data

Monthly Average Climate Data for Fairfield Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.8 °F30.3 °F1.9 in.
February10.4 °F34.3 °F1.18 in.
March20.0 °F43.2 °F1.28 in.
April28.5 °F54.5 °F1.07 in.
May35.6 °F64.6 °F1.67 in.
June40.6 °F73.3 °F0.79 in.
July47.2 °F84.9 °F0.19 in.
August45.3 °F84.1 °F0.2 in.
September37.5 °F74.7 °F0.44 in.
October28.2 °F60.5 °F0.96 in.
November19.1 °F43.6 °F1.33 in.
December9.4 °F30.7 °F2.19 in.
Annual27.5 °F56.6 °F13.2 in.

Climate Data for Fairfield Idaho

Average First Frost DateAug. 21 - Aug. 31
Average Last Frost DateJun. 11 - Jun. 20
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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