Osage, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osage, a community in Weston County, Wyoming.
Overnight
54°F
Patchy Fog
Patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 54. East wind around 2 mph. Chance of precipitation is 20%.
7-day forecast for Osage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Patchy Fog | 2 mph E | 15% |
| Saturday | 69°F | Patchy Fog then Chance Showers And Thunderstorms | 2 to 8 mph SE | 41% |
| Saturday Night | 48°F | Showers And Thunderstorms | 1 to 7 mph SE | 87% |
| Sunday | 61°F | Showers And Thunderstorms | 6 to 12 mph SE | 79% |
| Sunday Night | 44°F | Showers And Thunderstorms Likely | 2 to 6 mph S | 72% |
| Monday | 64°F | Partly Sunny | 3 to 9 mph S | 14% |
| Monday Night | 44°F | Partly Cloudy | 10 to 15 mph SE | 1% |
| Tuesday | 70°F | Sunny | 13 to 16 mph SE | 1% |
| Tuesday Night | 50°F | Mostly Clear | 12 to 16 mph SE | 8% |
| Wednesday | 75°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph SE | 15% |
| Wednesday Night | 49°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SE | 15% |
| Thursday | 79°F | Sunny | 2 to 6 mph SE | 4% |
| Thursday Night | 51°F | Mostly Clear | 8 mph SE | 1% |
| Friday | 78°F | Mostly Sunny | 8 to 14 mph SE | 6% |
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.