Walnut Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Walnut Grove, a community in Sumner County, Tennessee.
Overnight
66°F
Mostly Clear
Mostly clear, with a low around 66. North northeast wind around 5 mph.
7-day forecast for Walnut Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Mostly Clear | 5 mph NNE | 0% |
| Tuesday | 87°F | Sunny | 5 mph NNE | 2% |
| Tuesday Night | 69°F | Mostly Clear then Patchy Fog | 0 to 5 mph NNE | 2% |
| Wednesday | 88°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNW | 22% |
| Wednesday Night | 70°F | Partly Cloudy | 0 to 5 mph SSE | 8% |
| Thursday | 91°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 16% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SSE | 26% |
| Friday | 90°F | Chance Showers And Thunderstorms | 5 mph SSW | 34% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 5 mph S | 34% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 5 mph SSW | 47% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 47% |
| Sunday | 89°F | Chance Showers And Thunderstorms | 5 mph SSW | 33% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 33% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 19% |
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 Aug 4, 2026.