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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

WhenTempForecastWindPrecip
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

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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.