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Lost Springs, WY Weather & Growing Conditions

Today
70°F
Mostly Sunny then Showers And Thunderstorms Likely
Showers and thunderstorms likely after noon. Mostly sunny. High near 70, with temperatures falling to around 68 in the afternoon. Northwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 70°F Mostly Sunny then Showers And Thunderstorms Likely 5 mph NW 57%
Tonight 44°F Showers And Thunderstorms Likely 10 mph ESE 66%
Sunday 60°F Showers And Thunderstorms Likely 10 to 15 mph W 65%
Sunday Night 41°F Chance Showers And Thunderstorms 5 to 10 mph NW 50%
Monday 66°F Mostly Sunny 5 to 10 mph SSE 5%
Monday Night 42°F Mostly Clear 10 to 15 mph SE 1%
Tuesday 73°F Sunny 5 to 15 mph SSE 2%
Tuesday Night 46°F Partly Cloudy 10 to 20 mph SE 10%
Wednesday 75°F Mostly Sunny then Slight Chance Showers And Thunderstorms 5 to 10 mph SSW 19%
Wednesday Night 45°F Slight Chance Rain Showers then Partly Cloudy 5 mph S 23%
Thursday 77°F Sunny 5 mph WNW 2%
Thursday Night 48°F Partly Cloudy 5 to 10 mph SE 3%
Friday 79°F Mostly Sunny 10 to 15 mph S 6%
Friday Night 48°F Partly Cloudy 10 to 15 mph S 10%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Lost Springs, WY

Last spring frost
May 25
First fall frost
Sep 15
Growing season
112 days
Hardiness zone
5a

Explore more for Lost Springs, WY: full frost dates · planting calendar · Wyoming frost dates

Climate data from the nearest NOAA station, Glendo 6Ne, Wy (19.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.