Harman US

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

WhenTempForecastWindPrecip
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

All Wyoming locations ›

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.