Ranchester, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ranchester, a town in Sheridan County, Wyoming.
Overnight
42°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 42. Wind around 0 mph.
7-day forecast for Ranchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Patchy Smoke | 0 mph | 0% |
| Tuesday | 77°F | Patchy Smoke | 0 to 6 mph E | 1% |
| Tuesday Night | 48°F | Patchy Smoke | 1 to 6 mph ENE | 15% |
| Wednesday | 86°F | Sunny | 0 to 5 mph NNE | 0% |
| Wednesday Night | 53°F | Mostly Clear | 1 to 7 mph W | 0% |
| Thursday | 93°F | Sunny | 1 to 5 mph NNW | 0% |
| Thursday Night | 58°F | Mostly Clear | 1 to 8 mph W | 0% |
| Friday | 99°F | Sunny | 1 to 5 mph NE | 0% |
| Friday Night | 60°F | Mostly Clear | 5 to 8 mph W | 0% |
| Saturday | 96°F | Sunny | 5 to 14 mph NW | 0% |
| Saturday Night | 61°F | Mostly Clear | 2 to 8 mph WNW | 0% |
| Sunday | 95°F | Sunny | 1 to 10 mph NNW | 2% |
| Sunday Night | 61°F | Partly Cloudy | 2 to 7 mph NW | 5% |
| Monday | 93°F | Sunny | 2 to 9 mph N | 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 Aug 4, 2026.