Walnut Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Walnut Grove, a community in Sumner County, Tennessee.
Today
70°F
Showers And Thunderstorms
Showers and thunderstorms before 2pm. Mostly cloudy. High near 70, with temperatures falling to around 65 in the afternoon. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for Walnut Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Showers And Thunderstorms | 5 to 15 mph SSW | 100% |
| Tonight | 47°F | Partly Cloudy | 5 mph WSW | 0% |
| Thursday | 70°F | Mostly Sunny | 5 mph SW | 0% |
| Thursday Night | 45°F | Mostly Clear | 0 mph | 0% |
| Friday | 65°F | Mostly Sunny | 0 to 10 mph NW | 0% |
| Friday Night | 40°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Saturday | 57°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Sunday | 57°F | Mostly Sunny | 0 to 10 mph N | 1% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph N | 0% |
| Monday | 61°F | Sunny | 0 to 5 mph SSW | 0% |
| Monday Night | 36°F | Clear | 0 mph | 1% |
| Tuesday | 66°F | Sunny | 0 to 5 mph WSW | 1% |
| Tuesday Night | 39°F | Mostly Clear | 0 mph | 1% |
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 Nov 4, 2026.