Lost Springs, WY Weather & Growing Conditions
Tonight
30°F
Mostly Clear
Mostly clear, with a low around 30. Northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Mostly Clear | 5 mph NW | 0% |
| Wednesday | 48°F | Mostly Sunny | 5 to 10 mph NW | 0% |
| Wednesday Night | 28°F | Mostly Cloudy | 5 mph NW | 0% |
| Thursday | 54°F | Sunny | 5 mph SW | 0% |
| Thursday Night | 30°F | Partly Cloudy | 5 mph SW | 0% |
| Friday | 52°F | Sunny | 5 to 10 mph WNW | 0% |
| Friday Night | 29°F | Mostly Clear | 5 to 10 mph WSW | 4% |
| Saturday | 55°F | Sunny | 5 to 10 mph WNW | 4% |
| Saturday Night | 30°F | Mostly Clear | 5 mph WSW | 0% |
| Sunday | 64°F | Sunny | 5 to 10 mph WSW | 0% |
| Sunday Night | 38°F | Mostly Clear | 10 to 15 mph W | 0% |
| Monday | 59°F | Sunny | 5 to 10 mph NNW | 0% |
| Monday Night | 35°F | Partly Cloudy | 5 to 10 mph S | 0% |
| Tuesday | 61°F | Mostly Sunny | 5 to 15 mph WNW | 1% |
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 Nov 4, 2026.