Ashton Idaho Climate Data

Monthly Average Climate Data for Ashton Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.8 °F28.6 °F1.99 in.
February13.9 °F32.8 °F1.31 in.
March21.9 °F43.1 °F1.37 in.
April29.0 °F53.4 °F1.83 in.
May37.0 °F64.0 °F2.2 in.
June43.2 °F72.3 °F1.71 in.
July48.2 °F82.2 °F0.65 in.
August46.5 °F81.9 °F0.82 in.
September39.5 °F71.8 °F1.23 in.
October30.2 °F56.7 °F1.69 in.
November20.8 °F40.8 °F1.51 in.
December12.4 °F29.4 °F2.14 in.
Annual29.5 °F54.8 °F18.45 in.

Climate Data for Ashton Idaho

Average First Frost DateSep.1 - Sep. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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