Dayton, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Rhea County, Tennessee.
Tonight
63°F
Chance Rain Showers
A chance of rain showers between 11pm and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Chance Rain Showers | 5 to 10 mph S | 37% |
| Wednesday | 70°F | Showers And Thunderstorms | 10 to 15 mph S | 99% |
| Wednesday Night | 58°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph SW | 72% |
| Thursday | 74°F | Mostly Sunny | 0 to 5 mph W | 8% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 7% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NW | 3% |
| Friday Night | 43°F | Mostly Clear | 0 to 5 mph NW | 2% |
| Saturday | 65°F | Mostly Sunny | 0 to 5 mph N | 1% |
| Saturday Night | 38°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Sunday | 64°F | Mostly Sunny | 0 to 5 mph N | 7% |
| Sunday Night | 36°F | Mostly Clear | 0 to 5 mph NW | 7% |
| Monday | 65°F | Sunny | 0 to 5 mph NW | 7% |
| Monday Night | 36°F | Mostly Clear | 0 mph | 3% |
| Tuesday | 68°F | Sunny | 0 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (35.495, -85.009). Updated through the day.
Growing snapshot for Dayton
Last spring frost
Apr 4
First fall frost
Oct 31
Growing season
208 days
Hardiness zone
7b
More local growing data for Dayton: nearby ZIP 37321 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dayton 2Se, Tn (2.2 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.