Lost Springs, WY Weather & Growing Conditions
Today
75°F
Smoke then Mostly Sunny
Smoke before noon. Mostly sunny, with a high near 75. Southeast wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Smoke then Mostly Sunny | 5 to 10 mph SE | 1% |
| Tonight | 51°F | Mostly Clear then Slight Chance Rain Showers | 10 to 15 mph SE | 18% |
| Wednesday | 84°F | Sunny | 5 to 10 mph S | 2% |
| Wednesday Night | 55°F | Clear | 5 to 10 mph SSE | 2% |
| Thursday | 92°F | Sunny | 5 mph WNW | 0% |
| Thursday Night | 59°F | Clear | 5 to 10 mph SE | 0% |
| Friday | 97°F | Sunny | 5 mph WNW | 0% |
| Friday Night | 63°F | Mostly Clear | 5 to 10 mph S | 0% |
| Saturday | 98°F | Sunny | 10 to 15 mph WNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 5 to 15 mph ESE | 0% |
| Sunday | 98°F | Sunny | 10 to 15 mph WSW | 2% |
| Sunday Night | 63°F | Partly Cloudy | 5 to 15 mph ESE | 8% |
| Monday | 96°F | Mostly Sunny | 10 to 15 mph ESE | 6% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 10 to 15 mph ESE | 29% |
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 Aug 4, 2026.