Twin Falls Idaho Climate Data

Monthly Average Climate Data for Twin Falls Idaho

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.6 °C3.3 °C29.46 mm
February-4.1 °C6.3 °C18.29 mm
March-0.8 °C11.9 °C25.91 mm
April1.9 °C15.6 °C27.18 mm
May6.3 °C20.9 °C32.51 mm
June10.1 °C26.1 °C17.02 mm
July13.9 °C31.8 °C4.32 mm
August12.7 °C31 °C8.13 mm
September8.1 °C25.5 °C11.43 mm
October2.5 °C17.8 °C22.61 mm
November-2.3 °C9.6 °C23.11 mm
December-5.7 °C3.3 °C34.8 mm
Annual3.1 °C16.9 °C254.77 mm

Climate Data for Twin Falls Idaho

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate