Walnut Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Walnut Grove, a community in Sumner County, Tennessee.
This Afternoon
96°F
Sunny
Sunny, with a high near 96. Heat index values as high as 102. Northwest wind around 5 mph.
7-day forecast for Walnut Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Sunny | 5 mph NW | 9% |
| Tonight | 72°F | Mostly Clear | 0 to 5 mph ENE | 14% |
| Saturday | 97°F | Sunny | 0 to 5 mph WNW | 10% |
| Saturday Night | 72°F | Mostly Clear | 0 to 5 mph SSE | 6% |
| Sunday | 97°F | Mostly Sunny | 5 mph SW | 4% |
| Sunday Night | 72°F | Partly Cloudy | 5 mph S | 4% |
| Monday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph WSW | 21% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph NE | 47% |
| Tuesday | 86°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph N | 54% |
| Tuesday Night | 64°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 54% |
| Wednesday | 81°F | Slight Chance Rain Showers | 5 to 10 mph N | 24% |
| Wednesday Night | 61°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph N | 21% |
| Thursday | 79°F | Mostly Sunny | 5 to 10 mph N | 9% |
| Thursday Night | 60°F | Partly Cloudy | 5 to 10 mph NNE | 9% |
Forecast source: National Weather Service (api.weather.gov) for Walnut Grove (36.489, -86.606). Updated through the day.
Growing snapshot for Walnut Grove
Last spring frost
Apr 7
First fall frost
Oct 30
Growing season
206 days
Hardiness zone
7b
More local growing data for Walnut Grove: nearby ZIP 37048 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Bethpage
Bransford
Castalian Springs
Cottontown
Gallatin
Graball
Hendersonville
Mitchellville
New Deal
Oak Grove
Portland
Shackle Island
Westmoreland
Climate data from the nearest NOAA station, White House, Tn (4.1 mi from Walnut Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.