Reliance, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Reliance, a community in Sweetwater County, Wyoming.
Overnight
47°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 3am, then patchy fog. Mostly cloudy, with a low around 47. South wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Reliance
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Slight Chance Showers And Thunderstorms | 5 mph S | 18% |
| Saturday | 65°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 3 to 12 mph SW | 55% |
| Saturday Night | 36°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 to 10 mph WSW | 22% |
| Sunday | 65°F | Sunny | 3 to 9 mph WSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 2 to 7 mph N | 0% |
| Monday | 70°F | Sunny | 1 to 5 mph WNW | 0% |
| Monday Night | 41°F | Partly Cloudy | 0 to 5 mph ENE | 1% |
| Tuesday | 73°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph S | 11% |
| Tuesday Night | 42°F | Chance Showers And Thunderstorms | 6 mph SW | 29% |
| Wednesday | 73°F | Mostly Sunny | 3 to 8 mph SW | 7% |
| Wednesday Night | 42°F | Mostly Clear | 5 mph SW | 3% |
| Thursday | 75°F | Sunny | 1 to 5 mph SW | 1% |
| Thursday Night | 43°F | Partly Cloudy | 3 mph S | 3% |
| Friday | 76°F | Mostly Sunny | 2 to 6 mph SSW | 7% |
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 Sep 19, 2026.