Smyrna, TN Weather & Growing Conditions
Today
99°F
Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 4pm. Sunny, with a high near 99. Heat index values as high as 105. West northwest wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny then Slight Chance Rain Showers | 0 to 5 mph WNW | 18% |
| Tonight | 72°F | Mostly Clear | 5 mph SSE | 9% |
| Sunday | 98°F | Sunny then Slight Chance Rain Showers | 5 mph SW | 15% |
| Sunday Night | 72°F | Partly Cloudy | 5 mph SSW | 10% |
| Monday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph WSW | 23% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph ENE | 38% |
| Tuesday | 91°F | Chance Showers And Thunderstorms | 5 to 10 mph NNE | 50% |
| Tuesday Night | 65°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 50% |
| Wednesday | 83°F | Chance Rain Showers | 5 to 10 mph NNW | 50% |
| Wednesday Night | 62°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 31% |
| Thursday | 82°F | Mostly Sunny | 0 to 10 mph N | 13% |
| Thursday Night | 60°F | Partly Cloudy | 5 to 10 mph NNE | 8% |
| Friday | 82°F | Mostly Sunny | 5 to 10 mph NNE | 5% |
| Friday Night | 58°F | Partly Cloudy | 5 to 10 mph NNE | 4% |
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 Sep 19, 2026.