Osage, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osage, a community in Weston County, Wyoming.
Tonight
55°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 55, with temperatures rising to around 57 overnight. Southeast wind around 5 mph. Chance of precipitation is 80%.
7-day forecast for Osage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Showers And Thunderstorms | 5 mph SE | 79% |
| Saturday | 69°F | Showers And Thunderstorms Likely | 2 to 6 mph SE | 67% |
| Saturday Night | 51°F | Showers And Thunderstorms Likely | 5 mph SE | 74% |
| Sunday | 61°F | Showers And Thunderstorms | 5 mph SE | 96% |
| Sunday Night | 48°F | Showers And Thunderstorms | 3 mph SE | 77% |
| Monday | 64°F | Chance Rain Showers | 2 to 9 mph SE | 27% |
| Monday Night | 48°F | Mostly Clear | 10 to 14 mph SE | 1% |
| Tuesday | 71°F | Mostly Sunny | 10 to 15 mph SE | 4% |
| Tuesday Night | 52°F | Mostly Clear | 10 to 14 mph SE | 13% |
| Wednesday | 76°F | Mostly Sunny | 5 to 9 mph SE | 14% |
| Wednesday Night | 52°F | Mostly Clear | 5 mph E | 11% |
| Thursday | 77°F | Sunny | 2 to 7 mph SE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 8 mph SE | 3% |
| Friday | 78°F | Mostly Sunny | 8 to 13 mph SE | 8% |
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 Sep 19, 2026.