Rock Springs, WY Weather & Climate Normals
Rock Springs's real weather, in one number
Rock Springs, WY scores 35/100 on this site's reading of NOAA's own 30-year normals: weather-driven. Heat, cold, snow, or rainfall here are heavy enough that they shape daily life for a large part of the year. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Rock Springs's hottest and coldest months
Rock Springs's hottest month is Jul, averaging 69°F; its coldest is Dec, averaging 22°F, a 47.9°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Rock Springs
Rock Springs averages 7.55in of precipitation a year across roughly 72 days with measurable rain or snow, and 54in of snow a year.
Where Rock Springs ranks
Rock Springs ranks 4802 of 4876 US cities in this dataset for comfort score, and 13 of 16 within WY. About 22,967 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from ROCK SPRINGS AP, WY US, 8.7 miles from Rock Springs, not a prediction for any specific day.
More on how this is worked out
How the comfort score is calculated · Why some cities show no snow or rain figure