Dayton, TN Weather & Growing Conditions
Today
95°F
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Sunny. High near 95, with temperatures falling to around 91 in the afternoon. Heat index values as high as 107. East wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Sunny then Chance Showers And Thunderstorms | 0 mph | 38% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 32% |
| Sunday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 29% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 0 mph | 28% |
| Monday | 92°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 mph | 44% |
| Monday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 63% |
| Tuesday | 86°F | Showers And Thunderstorms | 0 mph | 84% |
| Tuesday Night | 65°F | Showers And Thunderstorms | 0 mph | 84% |
| Wednesday | 80°F | Showers And Thunderstorms | 0 to 5 mph W | 75% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 0 mph | 75% |
| Thursday | 80°F | Chance Rain Showers | 0 to 5 mph NW | 25% |
| Thursday Night | 59°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 25% |
| Friday | 79°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 19% |
| Friday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph N | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dayton, TN
Last spring frost
Apr 11
First fall frost
Oct 29
Growing season
200 days
Hardiness zone
7b
Explore more for Dayton, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Spring City, Tn (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.