Lost Springs, WY Weather & Growing Conditions
Tonight
54°F
Chance Showers And Thunderstorms then Mostly Cloudy
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph S | 54% |
| Saturday | 72°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SSE | 36% |
| Saturday Night | 48°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph SE | 41% |
| Sunday | 64°F | Partly Sunny then Chance Showers And Thunderstorms | 10 mph WNW | 29% |
| Sunday Night | 43°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph NW | 39% |
| Monday | 68°F | Mostly Sunny | 5 mph ESE | 5% |
| Monday Night | 46°F | Mostly Clear | 10 to 15 mph SE | 0% |
| Tuesday | 76°F | Mostly Sunny | 5 to 15 mph SSE | 2% |
| Tuesday Night | 51°F | Partly Cloudy | 10 to 15 mph SE | 11% |
| Wednesday | 78°F | Mostly Sunny | 10 mph W | 12% |
| Wednesday Night | 49°F | Partly Cloudy | 5 mph S | 9% |
| Thursday | 79°F | Mostly Sunny | 5 mph SSE | 3% |
| Thursday Night | 51°F | Partly Cloudy | 5 to 15 mph SE | 11% |
| Friday | 80°F | Mostly Sunny | 10 to 15 mph S | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lost Springs, WY
Last spring frost
May 23
First fall frost
Sep 22
Growing season
122 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, Douglas Converse Co Ap, Wy (21 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.