Granger, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granger, a town in Sweetwater County, Wyoming.
Tonight
46°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then a slight chance of showers and thunderstorms between 11pm and 3am. Some of the storms could be severe. Mostly cloudy, with a low around 46. Northwest wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Granger
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Chance Showers And Thunderstorms | 5 to 8 mph NW | 47% |
| Saturday | 65°F | Chance Showers And Thunderstorms | 5 to 13 mph W | 33% |
| Saturday Night | 37°F | Partly Cloudy | 6 to 12 mph W | 9% |
| Sunday | 66°F | Sunny | 5 to 8 mph W | 0% |
| Sunday Night | 37°F | Mostly Clear | 1 to 8 mph W | 0% |
| Monday | 70°F | Sunny | 2 mph WNW | 0% |
| Monday Night | 42°F | Partly Cloudy | 2 mph WSW | 2% |
| Tuesday | 72°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 mph ENE | 11% |
| Tuesday Night | 41°F | Chance Showers And Thunderstorms | 5 mph WSW | 28% |
| Wednesday | 72°F | Mostly Sunny | 3 mph WSW | 8% |
| Wednesday Night | 40°F | Mostly Clear | 3 mph WSW | 5% |
| Thursday | 75°F | Mostly Sunny | 2 mph SSE | 2% |
| Thursday Night | 43°F | Partly Cloudy | 3 mph ESE | 8% |
| Friday | 76°F | Mostly Sunny | 3 mph WSW | 10% |
Forecast source: National Weather Service (api.weather.gov) for Granger (41.598, -109.965). Updated through the day.
Growing snapshot for Granger
Last spring frost
May 25
First fall frost
Sep 27
Growing season
124 days
Hardiness zone
4b
More local growing data for Granger: nearby ZIP 82934 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Arrowhead Springs
Bairoil
Clearview Acres
Eden
Farson
Green River
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, Church Buttes Gas Plt, Wy (15.6 mi from Granger). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.