Brentwood, TN Weather & Growing Conditions
Today
89°F
Sunny
Sunny, with a high near 89. Heat index values as high as 97. North northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 5 mph NNE | 10% |
| Tonight | 70°F | Mostly Clear then Patchy Fog | 0 to 5 mph N | 10% |
| Wednesday | 90°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 to 5 mph WSW | 22% |
| Wednesday Night | 71°F | Partly Cloudy | 0 to 5 mph S | 10% |
| Thursday | 92°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 16% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 21% |
| Friday | 92°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 mph SSW | 38% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 5 mph S | 38% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 5 mph SSW | 49% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 49% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 5 mph SSW | 32% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 32% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 23% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 23% |
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 Aug 4, 2026.