Ranchester, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ranchester, a town in Sheridan County, Wyoming.
Overnight
52°F
Cloudy
Cloudy. Low around 52, with temperatures rising to around 54 overnight. Northwest wind around 7 mph.
7-day forecast for Ranchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Cloudy | 7 mph NW | 10% |
| Saturday | 64°F | Isolated Showers And Thunderstorms then Showers And Thunderstorms | 7 to 10 mph NW | 96% |
| Saturday Night | 45°F | Patchy Fog | 6 to 10 mph NW | 90% |
| Sunday | 63°F | Showers And Thunderstorms | 8 mph NW | 75% |
| Sunday Night | 42°F | Chance Rain Showers then Areas Of Fog | 0 to 6 mph NW | 34% |
| Monday | 71°F | Patchy Fog then Mostly Sunny | 0 to 5 mph E | 7% |
| Monday Night | 43°F | Mostly Clear | 1 to 5 mph SSE | 1% |
| Tuesday | 77°F | Sunny | 0 to 3 mph SE | 1% |
| Tuesday Night | 48°F | Mostly Clear then Slight Chance Rain Showers | 2 mph S | 15% |
| Wednesday | 79°F | Mostly Sunny | 0 to 3 mph ESE | 11% |
| Wednesday Night | 47°F | Mostly Clear | 3 mph SSW | 5% |
| Thursday | 83°F | Sunny | 1 to 5 mph SE | 2% |
| Thursday Night | 48°F | Mostly Clear | 5 mph SSE | 1% |
| Friday | 83°F | Mostly Sunny | 3 mph SE | 2% |
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 Sep 19, 2026.