Lost Springs, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lost Springs, a town in Converse County, Wyoming.
Today
72°F
Mostly Sunny then Showers And Thunderstorms Likely
Showers and thunderstorms likely after noon. Mostly sunny. High near 72, with temperatures falling to around 70 in the afternoon. North northwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lost Springs
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Mostly Sunny then Showers And Thunderstorms Likely | 5 mph NNW | 57% |
| Tonight | 45°F | Showers And Thunderstorms Likely | 5 to 10 mph SSE | 65% |
| Sunday | 62°F | Showers And Thunderstorms Likely | 5 to 15 mph W | 62% |
| Sunday Night | 41°F | Chance Showers And Thunderstorms | 5 to 10 mph NW | 46% |
| Monday | 68°F | Mostly Sunny | 5 to 10 mph S | 5% |
| Monday Night | 43°F | Mostly Clear | 10 to 15 mph SE | 1% |
| Tuesday | 74°F | Sunny | 5 to 15 mph SSE | 2% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 20 mph SE | 10% |
| Wednesday | 76°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 19% |
| Wednesday Night | 45°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph S | 23% |
| Thursday | 79°F | Sunny | 0 to 5 mph WNW | 2% |
| Thursday Night | 48°F | Partly Cloudy | 5 mph SE | 3% |
| Friday | 80°F | Mostly Sunny | 5 to 15 mph S | 6% |
| Friday Night | 48°F | Partly Cloudy | 5 to 15 mph S | 11% |
Forecast source: National Weather Service (api.weather.gov) for Lost Springs (42.765, -104.925). Updated through the day.
Growing snapshot for Lost Springs
Last spring frost
May 25
First fall frost
Sep 15
Growing season
112 days
Hardiness zone
5a
More local growing data for Lost Springs: nearby ZIP 82224 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Glendo 6Ne, Wy (19.9 mi from Lost Springs). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.