Ralston Wyoming Climate Data

Monthly Average Climate Data for Ralston Wyoming

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.5 °C1.3 °C5.08 mm
February-9.7 °C3.3 °C5.59 mm
March-4.7 °C9.7 °C7.87 mm
April-0.3 °C14.3 °C18.29 mm
May4.9 °C19.3 °C38.1 mm
June9.4 °C25.1 °C33.78 mm
July12.8 °C29.9 °C24.64 mm
August11.7 °C29.2 °C13.72 mm
September6.8 °C23.4 °C20.07 mm
October0.4 °C15.1 °C17.02 mm
November-5.8 °C7.1 °C6.35 mm
December-10.6 °C1.5 °C4.57 mm
Annual0.3 °C14.9 °C195.08 mm

Climate Data for Ralston Wyoming

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBWk - Cold Desert Climate
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