Rock Springs Wyoming Climate Data

Monthly Average Climate Data for Rock Springs Wyoming

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.2 °C0.4 °C15.24 mm
February-10.2 °C2.2 °C12.95 mm
March-5.3 °C7.9 °C18.29 mm
April-1.7 °C12.9 °C28.19 mm
May2.8 °C18.2 °C49.28 mm
June7.3 °C24.7 °C21.59 mm
July11.1 °C29.6 °C16.26 mm
August10.2 °C28.4 °C14.99 mm
September5.3 °C23.2 °C26.42 mm
October-0.3 °C15.1 °C26.16 mm
November-6.2 °C6.6 °C16 mm
December-11.3 °C0.3 °C12.45 mm
Annual-0.8 °C14.1 °C257.82 mm

Climate Data for Rock Springs Wyoming

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 11 - Jun. 20
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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