Dayton, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a town in Sheridan County, Wyoming.
Tonight
30°F
Clear
Clear, with a low around 30. Southwest wind 0 to 3 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Clear | 0 to 3 mph SW | 0% |
| Wednesday | 55°F | Sunny | 0 to 5 mph NNW | 0% |
| Wednesday Night | 29°F | Partly Cloudy | 3 mph WSW | 0% |
| Thursday | 59°F | Sunny | 0 to 3 mph NW | 0% |
| Thursday Night | 31°F | Partly Cloudy | 0 to 3 mph WNW | 2% |
| Friday | 55°F | Sunny | 3 mph WSW | 3% |
| Friday Night | 32°F | Partly Cloudy | 2 to 8 mph SW | 9% |
| Saturday | 60°F | Sunny | 2 to 7 mph WNW | 2% |
| Saturday Night | 34°F | Mostly Clear | 2 to 7 mph SSW | 0% |
| Sunday | 70°F | Sunny | 2 to 9 mph WSW | 0% |
| Sunday Night | 38°F | Partly Cloudy | 0 to 8 mph SW | 0% |
| Monday | 61°F | Mostly Sunny | 2 mph SE | 0% |
| Monday Night | 36°F | Partly Cloudy | 2 mph SSW | 0% |
| Tuesday | 64°F | Mostly Sunny | 2 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (44.873, -107.262). Updated through the day.
Growing snapshot for Dayton
Last spring frost
May 24
First fall frost
Sep 18
Growing season
114 days
Hardiness zone
5a
More local growing data for Dayton: nearby ZIP 82844 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dayton, Wy (5.9 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.