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James Town, WY Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for James Town, a community in Sweetwater County, Wyoming.

Tonight
47°F
Isolated Showers And Thunderstorms
Isolated showers and thunderstorms before 3am, then patchy fog. Mostly cloudy, with a low around 47. South southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for James Town

WhenTempForecastWindPrecip
Tonight 47°F Isolated Showers And Thunderstorms 5 mph SSE 21%
Saturday 66°F Patchy Fog then Scattered Showers And Thunderstorms 2 to 9 mph SW 51%
Saturday Night 39°F Slight Chance Showers And Thunderstorms then Partly Cloudy 2 to 9 mph SW 10%
Sunday 67°F Sunny 2 to 7 mph WSW 0%
Sunday Night 39°F Mostly Clear 1 to 7 mph SSE 0%
Monday 72°F Sunny 2 mph SSW 0%
Monday Night 44°F Partly Cloudy 2 mph SSW 2%
Tuesday 74°F Mostly Sunny then Slight Chance Showers And Thunderstorms 3 mph S 11%
Tuesday Night 43°F Slight Chance Showers And Thunderstorms then Partly Cloudy 5 mph SW 23%
Wednesday 74°F Mostly Sunny 5 mph SW 6%
Wednesday Night 43°F Mostly Clear 3 mph SSW 5%
Thursday 76°F Mostly Sunny 3 mph SSE 2%
Thursday Night 46°F Partly Cloudy 3 mph SE 7%
Friday 77°F Mostly Sunny 5 mph SSW 8%

Forecast source: National Weather Service (api.weather.gov) for James Town (41.564, -109.536). Updated through the day.

Growing snapshot for James Town

Last spring frost
May 24
First fall frost
Sep 22
Growing season
120 days
Hardiness zone
5a

More local growing data for James Town: nearby ZIP 82935 weather · frost dates · planting calendar · Wyoming frost dates

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Climate data from the nearest NOAA station, Green Rvr, Wy (14.8 mi from James Town). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.