Green River, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Green River, a city in Sweetwater County, Wyoming.
Tonight
30°F
Mostly Cloudy
Mostly cloudy. Low around 30, with temperatures rising to around 33 overnight. East wind around 6 mph.
7-day forecast for Green River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Mostly Cloudy | 6 mph E | 3% |
| Wednesday | 46°F | Cloudy | 2 to 6 mph NE | 7% |
| Wednesday Night | 27°F | Partly Cloudy | 3 mph WSW | 3% |
| Thursday | 49°F | Mostly Sunny | 3 mph SW | 0% |
| Thursday Night | 27°F | Mostly Cloudy | 3 mph WSW | 1% |
| Friday | 50°F | Mostly Sunny | 2 to 9 mph W | 1% |
| Friday Night | 26°F | Mostly Clear | 3 to 7 mph WSW | 0% |
| Saturday | 54°F | Sunny | 5 mph WSW | 0% |
| Saturday Night | 28°F | Mostly Clear | 2 mph SSW | 0% |
| Sunday | 58°F | Sunny | 3 mph SSW | 0% |
| Sunday Night | 31°F | Partly Cloudy | 2 mph SSW | 0% |
| Monday | 58°F | Mostly Sunny | 2 mph SW | 0% |
| Monday Night | 33°F | Mostly Cloudy | 2 mph SW | 1% |
| Tuesday | 59°F | Mostly Sunny | 5 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Green River (41.513, -109.471). Updated through the day.
Growing snapshot for Green River
Last spring frost
May 24
First fall frost
Sep 22
Growing season
120 days
Hardiness zone
5a
More local growing data for Green River: nearby ZIP 82935 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
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James Town
Little America
McKinnon
North Rock Springs
Point of Rocks
Purple Sage
Reliance
Rock Springs
Superior
Table Rock
Wamsutter
Climate data from the nearest NOAA station, Green Rvr, Wy (14.8 mi from Green River). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.