Superior, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Superior, a town in Sweetwater County, Wyoming.
Today
63°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 11am and 3pm, then showers and thunderstorms likely between 3pm and 5pm, then a chance of showers and thunderstorms. Mostly sunny. High near 63, with temperatures falling to around 58 in the afternoon. West southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Superior
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Chance Showers And Thunderstorms | 6 to 9 mph WSW | 68% |
| Tonight | 37°F | Chance Showers And Thunderstorms | 5 to 9 mph W | 45% |
| Sunday | 60°F | Mostly Sunny | 3 to 9 mph W | 1% |
| Sunday Night | 36°F | Partly Cloudy | 2 to 6 mph N | 0% |
| Monday | 65°F | Mostly Sunny | 5 mph S | 0% |
| Monday Night | 39°F | Partly Cloudy | 2 mph NNW | 0% |
| Tuesday | 70°F | Mostly Sunny | 2 to 8 mph SSE | 5% |
| Tuesday Night | 42°F | Chance Showers And Thunderstorms | 6 mph SW | 28% |
| Wednesday | 68°F | Mostly Sunny | 6 to 12 mph WSW | 11% |
| Wednesday Night | 41°F | Mostly Clear | 2 to 6 mph WSW | 2% |
| Thursday | 71°F | Sunny | 5 mph SW | 3% |
| Thursday Night | 43°F | Partly Cloudy | 5 mph SE | 3% |
| Friday | 71°F | Mostly Sunny | 3 to 7 mph S | 7% |
| Friday Night | 44°F | Partly Cloudy | 7 mph SSW | 10% |
Forecast source: National Weather Service (api.weather.gov) for Superior (41.760, -108.964). Updated through the day.
Growing snapshot for Superior
Last spring frost
May 22
First fall frost
Sep 28
Growing season
126 days
Hardiness zone
5a
More local growing data for Superior: nearby ZIP 82945 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
Reliance
Rock Springs
Table Rock
Wamsutter
Climate data from the nearest NOAA station, Rock Springs Ap, Wy (10.5 mi from Superior). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.