Dayton, TN Weather & Growing Conditions
Today
88°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. Heat index values as high as 99. East wind 0 to 5 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 35% |
| Tonight | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 33% |
| Wednesday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 59% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 0 mph | 53% |
| Thursday | 88°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 62% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 mph | 62% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 50% |
| Saturday | 88°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 65% |
| Saturday Night | 70°F | Showers And Thunderstorms Likely | 0 mph | 65% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 0 mph | 44% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 44% |
| Monday | 89°F | Chance Showers And Thunderstorms | 0 mph | 47% |
| Monday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 47% |
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 Aug 4, 2026.