Dayton, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a town in Sheridan County, Wyoming.
Overnight
52°F
Cloudy
Cloudy. Low around 52, with temperatures rising to around 54 overnight. West southwest wind around 6 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Cloudy | 6 mph WSW | 12% |
| Saturday | 63°F | Showers And Thunderstorms | 3 to 10 mph WNW | 90% |
| Saturday Night | 45°F | Patchy Fog | 1 to 10 mph NW | 90% |
| Sunday | 62°F | Showers And Thunderstorms | 1 to 7 mph NW | 76% |
| Sunday Night | 43°F | Chance Rain Showers then Areas Of Fog | 0 to 5 mph NW | 29% |
| Monday | 70°F | Patchy Fog then Mostly Sunny | 0 to 5 mph E | 10% |
| Monday Night | 44°F | Mostly Clear | 5 mph S | 1% |
| Tuesday | 77°F | Sunny | 0 to 3 mph ENE | 2% |
| Tuesday Night | 49°F | Mostly Clear then Slight Chance Rain Showers | 3 mph S | 15% |
| Wednesday | 79°F | Mostly Sunny then Slight Chance Rain Showers | 3 mph NW | 15% |
| Wednesday Night | 49°F | Mostly Clear | 1 to 5 mph SE | 5% |
| Thursday | 82°F | Sunny | 5 mph S | 2% |
| Thursday Night | 51°F | Mostly Clear | 6 mph S | 1% |
| Friday | 82°F | Mostly Sunny | 3 mph S | 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 Sep 19, 2026.