Sweetwater Idaho Climate Data

Monthly Average Climate Data for Sweetwater Idaho

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-1.6 °C5 °C50.29 mm
February-1.1 °C8.1 °C44.2 mm
March1.1 °C12.8 °C50.8 mm
April3.9 °C17.1 °C52.83 mm
May7.6 °C22.2 °C51.05 mm
June10.8 °C25.8 °C39.62 mm
July13.4 °C32.4 °C19.56 mm
August13.2 °C32.5 °C17.27 mm
September9.4 °C26.7 °C20.57 mm
October4.6 °C17.4 °C44.2 mm
November1 °C9.2 °C55.37 mm
December-1.9 °C4.2 °C53.09 mm
Annual5 °C17.8 °C498.85 mm

Climate Data for Sweetwater Idaho

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
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