Brentwood, TN Weather & Growing Conditions
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. East southeast wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 0 mph | 4% |
| Saturday | 99°F | Sunny | 0 to 5 mph W | 10% |
| Saturday Night | 73°F | Mostly Clear | 0 to 5 mph SSE | 9% |
| Sunday | 98°F | Mostly Sunny | 5 mph SW | 3% |
| Sunday Night | 73°F | Partly Cloudy | 5 mph SSW | 3% |
| Monday | 97°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph WSW | 25% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 mph ESE | 46% |
| Tuesday | 89°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph NNE | 56% |
| Tuesday Night | 66°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 56% |
| Wednesday | 83°F | Chance Rain Showers | 5 mph N | 29% |
| Wednesday Night | 62°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph N | 23% |
| Thursday | 81°F | Mostly Sunny | 5 to 10 mph N | 11% |
| Thursday Night | 62°F | Partly Cloudy | 5 mph NNE | 8% |
| Friday | 81°F | Mostly Sunny | 5 to 10 mph NNE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Brentwood, TN
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
193 days
Hardiness zone
7b
Explore more for Brentwood, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Brentwood, Tn (0.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.