Lost Springs, WY Weather & Growing Conditions
Today
70°F
Mostly Sunny then Showers And Thunderstorms Likely
Showers and thunderstorms likely after noon. Mostly sunny. High near 70, with temperatures falling to around 68 in the afternoon. Northwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Mostly Sunny then Showers And Thunderstorms Likely | 5 mph NW | 57% |
| Tonight | 44°F | Showers And Thunderstorms Likely | 10 mph ESE | 66% |
| Sunday | 60°F | Showers And Thunderstorms Likely | 10 to 15 mph W | 65% |
| Sunday Night | 41°F | Chance Showers And Thunderstorms | 5 to 10 mph NW | 50% |
| Monday | 66°F | Mostly Sunny | 5 to 10 mph SSE | 5% |
| Monday Night | 42°F | Mostly Clear | 10 to 15 mph SE | 1% |
| Tuesday | 73°F | Sunny | 5 to 15 mph SSE | 2% |
| Tuesday Night | 46°F | Partly Cloudy | 10 to 20 mph SE | 10% |
| Wednesday | 75°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 19% |
| Wednesday Night | 45°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph S | 23% |
| Thursday | 77°F | Sunny | 5 mph WNW | 2% |
| Thursday Night | 48°F | Partly Cloudy | 5 to 10 mph SE | 3% |
| Friday | 79°F | Mostly Sunny | 10 to 15 mph S | 6% |
| Friday Night | 48°F | Partly Cloudy | 10 to 15 mph S | 10% |
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 Sep 19, 2026.