Lost Springs, WY Weather & Growing Conditions
Overnight
30°F
Clear
Clear. Low around 30, with temperatures rising to around 34 overnight. West northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 30°F | Clear | 5 mph WNW | 0% |
| Wednesday | 51°F | Mostly Sunny | 5 to 10 mph NNW | 0% |
| Wednesday Night | 31°F | Mostly Cloudy | 5 to 10 mph NW | 0% |
| Thursday | 56°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Thursday Night | 33°F | Mostly Cloudy | 5 to 10 mph SW | 0% |
| Friday | 54°F | Mostly Sunny | 5 to 10 mph WNW | 2% |
| Friday Night | 32°F | Mostly Clear | 5 to 15 mph WSW | 2% |
| Saturday | 57°F | Sunny | 5 to 15 mph WNW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Sunday | 65°F | Sunny | 10 mph SW | 0% |
| Sunday Night | 40°F | Mostly Clear | 10 mph W | 0% |
| Monday | 61°F | Sunny | 5 to 10 mph NW | 0% |
| Monday Night | 37°F | Partly Cloudy | 5 to 10 mph SE | 0% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
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 Nov 4, 2026.