Osage, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osage, a community in Weston County, Wyoming.
Tonight
25°F
Mostly Clear
Mostly clear, with a low around 25. Wind chill values as low as 19. North wind around 6 mph.
7-day forecast for Osage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 25°F | Mostly Clear | 6 mph N | 0% |
| Wednesday | 53°F | Mostly Sunny | 6 to 10 mph N | 0% |
| Wednesday Night | 26°F | Mostly Cloudy | 2 to 9 mph N | 0% |
| Thursday | 56°F | Sunny | 2 to 7 mph SE | 0% |
| Thursday Night | 31°F | Partly Cloudy | 2 to 7 mph E | 1% |
| Friday | 53°F | Sunny | 2 to 6 mph N | 1% |
| Friday Night | 29°F | Mostly Clear | 3 mph E | 4% |
| Saturday | 55°F | Sunny | 2 to 7 mph NW | 3% |
| Saturday Night | 30°F | Mostly Clear | 5 mph E | 0% |
| Sunday | 62°F | Sunny | 7 mph SE | 0% |
| Sunday Night | 36°F | Mostly Clear | 6 mph NE | 0% |
| Monday | 58°F | Sunny | 7 mph N | 0% |
| Monday Night | 35°F | Partly Cloudy | 7 mph SE | 0% |
| Tuesday | 60°F | Mostly Sunny | 7 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Osage (43.985, -104.435). Updated through the day.
Growing snapshot for Osage
Last spring frost
May 20
First fall frost
Sep 23
Growing season
123 days
Hardiness zone
4b
More local growing data for Osage: nearby ZIP 82723 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Upton, Wy (11.4 mi from Osage). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.