Estimates from NASA POWER (GEOS-IT weather analysis, FLASHFlux satellite sunlight), not forecasts or station readings. Warmest and coolest are the average daily high. "Sunniest" is the sunlight that reached the ground as a share of what a clear sky would give at that latitude and date (FAO-56 clear-sky formula, approximate). Each value covers an area of about 50 km around the town, so one town per area. Rain is left out because weekly rain estimates differ too much between data sources to rank them honestly. The week ends a few days back because the sunlight data arrives with a delay.

Wyoming climate, city by city

Across the 10 Wyoming places we hold long-run averages for, typical July highs run from 80°F in Jackson to 89°F in Torrington, and January highs from 22°F in Rock Springs to 34°F in Torrington. Jackson is the wettest at about 26 in of precipitation a year, Rock Springs the driest at about 10 in.

City	Jan high	Jul high	Wettest month	Rain per year
Cheyenne	32°F	83°F	May	18 in
Casper	29°F	88°F	May	14 in
Gillette	32°F	85°F	May	15 in
Rock Springs	22°F	86°F	March	10 in
Green River	24°F	87°F	March	11 in
Evanston	26°F	84°F	March	16 in
Riverton	23°F	88°F	June	11 in
Jackson	29°F	80°F	March	26 in
Rawlins	23°F	83°F	April	13 in
Torrington	34°F	89°F	May	14 in

Averages from ERA5 reanalysis, the same source as the climate tables on each city page.

All 18 places in Wyoming

every town and city we cover, A to Z

Common questions

What is the climate like in Wyoming?

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