Reliance, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Reliance, a community in Sweetwater County, Wyoming.
Tonight
29°F
Mostly Cloudy
Mostly cloudy. Low around 29, with temperatures rising to around 33 overnight. East wind around 7 mph.
7-day forecast for Reliance
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Mostly Cloudy | 7 mph E | 4% |
| Wednesday | 45°F | Cloudy | 3 to 7 mph ENE | 4% |
| Wednesday Night | 26°F | Partly Cloudy | 3 mph WNW | 2% |
| Thursday | 47°F | Mostly Sunny | 3 mph WSW | 0% |
| Thursday Night | 26°F | Mostly Cloudy | 5 mph WSW | 0% |
| Friday | 47°F | Mostly Sunny | 5 to 12 mph W | 0% |
| Friday Night | 26°F | Partly Cloudy | 5 to 8 mph WSW | 0% |
| Saturday | 51°F | Sunny | 2 to 6 mph WSW | 0% |
| Saturday Night | 28°F | Mostly Clear | 2 mph SW | 0% |
| Sunday | 56°F | Sunny | 1 to 5 mph WSW | 0% |
| Sunday Night | 31°F | Partly Cloudy | 5 mph SW | 0% |
| Monday | 56°F | Mostly Sunny | 3 mph WSW | 0% |
| Monday Night | 32°F | Mostly Cloudy | 3 mph WSW | 0% |
| Tuesday | 56°F | Mostly Sunny | 6 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Reliance (41.668, -109.198). Updated through the day.
Growing snapshot for Reliance
Last spring frost
May 24
First fall frost
Sep 24
Growing season
121 days
Hardiness zone
5a
More local growing data for Reliance: nearby ZIP 82943 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Arrowhead Springs
Bairoil
Clearview Acres
Eden
Farson
Granger
Green River
James Town
Little America
McKinnon
North Rock Springs
Point of Rocks
Purple Sage
Rock Springs
Superior
Table Rock
Wamsutter
Climate data from the nearest NOAA station, Rock Springs Fire Dept, Wy (9 mi from Reliance). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.