Ranchester, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ranchester, a town in Sheridan County, Wyoming.
Tonight
26°F
Clear
Clear. Low around 26, with temperatures rising to around 28 overnight. Southeast wind around 1 mph.
7-day forecast for Ranchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 26°F | Clear | 1 mph SE | 0% |
| Wednesday | 56°F | Sunny | 0 to 3 mph NNW | 0% |
| Wednesday Night | 26°F | Partly Cloudy then Patchy Fog | 0 to 3 mph SSW | 0% |
| Thursday | 59°F | Patchy Fog then Mostly Sunny | 2 mph NW | 0% |
| Thursday Night | 30°F | Mostly Cloudy | 2 to 6 mph WNW | 6% |
| Friday | 55°F | Sunny | 1 to 6 mph W | 6% |
| Friday Night | 29°F | Mostly Clear | 1 to 6 mph SW | 0% |
| Saturday | 61°F | Sunny | 1 to 6 mph W | 0% |
| Saturday Night | 31°F | Mostly Clear | 3 mph SSW | 0% |
| Sunday | 69°F | Sunny | 2 mph SW | 1% |
| Sunday Night | 34°F | Partly Cloudy | 2 mph NNW | 1% |
| Monday | 59°F | Mostly Sunny | 2 mph NNW | 0% |
| Monday Night | 32°F | Partly Cloudy | 1 mph S | 1% |
| Tuesday | 64°F | Mostly Sunny | 1 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Ranchester (44.908, -107.167). Updated through the day.
Growing snapshot for Ranchester
Last spring frost
May 24
First fall frost
Sep 18
Growing season
114 days
Hardiness zone
5a
More local growing data for Ranchester: nearby ZIP 82839 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dayton, Wy (7.3 mi from Ranchester). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.