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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.

Today
66°F
Patchy Fog then Chance Showers And Thunderstorms
Patchy fog before 9am, then a chance of showers and thunderstorms between noon and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of showers and thunderstorms. Mostly sunny. High near 66, with temperatures falling to around 63 in the afternoon. West southwest wind 2 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for James Town

WhenTempForecastWindPrecip
Today 66°F Patchy Fog then Chance Showers And Thunderstorms 2 to 9 mph WSW 53%
Tonight 34°F Slight Chance Showers And Thunderstorms then Partly Cloudy 2 to 9 mph WSW 19%
Sunday 67°F Sunny 2 to 8 mph WSW 0%
Sunday Night 35°F Mostly Clear 1 to 7 mph SSE 0%
Monday 72°F Sunny 3 mph SW 0%
Monday Night 40°F Partly Cloudy 3 mph SSE 2%
Tuesday 74°F Mostly Sunny then Slight Chance Showers And Thunderstorms 1 to 5 mph SSW 12%
Tuesday Night 40°F Chance Showers And Thunderstorms 5 mph SW 34%
Wednesday 75°F Mostly Sunny 2 to 6 mph SW 9%
Wednesday Night 40°F Mostly Clear 3 mph SSW 3%
Thursday 77°F Sunny 2 mph SW 1%
Thursday Night 42°F Partly Cloudy 2 mph S 4%
Friday 77°F Mostly Sunny 1 to 5 mph S 5%
Friday Night 43°F Partly Cloudy 6 mph SSW 12%

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.