Lost River Idaho Climate Data

Monthly Average Climate Data for Lost River Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January5.8 °F28.6 °F1.25 in.
February8.8 °F33.1 °F0.99 in.
March17.7 °F42.2 °F1.1 in.
April26.2 °F52.0 °F1.07 in.
May34.1 °F61.6 °F1.43 in.
June39.8 °F70.6 °F1.42 in.
July46.2 °F82.0 °F0.68 in.
August45.1 °F80.8 °F0.75 in.
September38.3 °F70.7 °F0.8 in.
October28.3 °F56.6 °F0.98 in.
November16.8 °F40.4 °F0.82 in.
December7.4 °F28.8 °F1.48 in.
Annual26.2 °F54 °F12.77 in.

Climate Data for Lost River 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 4a : -30°F to -25°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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