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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
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 1pm and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms. Mostly sunny. High near 63, with temperatures falling to around 59 in the afternoon. West southwest wind 3 to 12 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Superior

WhenTempForecastWindPrecip
Today 63°F Mostly Sunny then Chance Showers And Thunderstorms 3 to 12 mph WSW 56%
Tonight 35°F Slight Chance Showers And Thunderstorms then Partly Cloudy 3 to 9 mph WNW 23%
Sunday 62°F Mostly Sunny 3 to 10 mph W 0%
Sunday Night 36°F Mostly Clear 2 to 7 mph NNE 0%
Monday 68°F Sunny 5 mph W 0%
Monday Night 40°F Partly Cloudy 3 mph S 0%
Tuesday 70°F Mostly Sunny 2 to 7 mph SSE 8%
Tuesday Night 41°F Chance Showers And Thunderstorms 6 mph SW 30%
Wednesday 70°F Mostly Sunny 5 to 10 mph SW 6%
Wednesday Night 41°F Mostly Clear 6 mph SW 2%
Thursday 72°F Sunny 2 to 6 mph SW 1%
Thursday Night 43°F Partly Cloudy 3 mph S 3%
Friday 73°F Mostly Sunny 3 to 8 mph SW 6%
Friday Night 44°F Partly Cloudy 7 mph SSW 11%

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.