Castle Valley Utah Climate Data

Monthly Average Climate Data for Castle Valley Utah

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.9 °C5 °C19.56 mm
February-3.7 °C9.2 °C19.81 mm
March0.7 °C15.5 °C23.62 mm
April3.9 °C19.8 °C28.7 mm
May9.1 °C25.6 °C24.64 mm
June14.6 °C32.5 °C10.92 mm
July18 °C35.7 °C20.57 mm
August16.7 °C34.2 °C29.72 mm
September12.3 °C29.1 °C33.02 mm
October4.6 °C21 °C35.31 mm
November-1.3 °C12.6 °C21.59 mm
December-6.9 °C5.3 °C22.35 mm
Annual5.1 °C20.5 °C289.81 mm

Climate Data for Castle Valley Utah

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate