Smyrna, TN Weather & Growing Conditions
Today
90°F
Sunny
Sunny, with a high near 90. Heat index values as high as 97. North northeast wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Sunny | 5 to 10 mph NNE | 11% |
| Tonight | 70°F | Partly Cloudy then Patchy Fog | 0 to 5 mph N | 13% |
| Wednesday | 90°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph WNW | 27% |
| Wednesday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 21% |
| Thursday | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms | 5 mph S | 21% |
| Friday | 92°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph SSW | 35% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 5 mph S | 35% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 5 mph SSW | 48% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 48% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 32% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 32% |
| Monday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SSW | 25% |
| Monday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SSW | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Smyrna, TN
Last spring frost
Apr 13
First fall frost
Oct 21
Growing season
189 days
Hardiness zone
7b
Explore more for Smyrna, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Smyrna 6S, Tn (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.