Walnut Grove, TN Weather & Growing Conditions
This Afternoon
98°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 98. Heat index values as high as 100. Northwest wind around 0 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Slight Chance Showers And Thunderstorms | 0 mph | 18% |
| Tonight | 73°F | Mostly Clear | 0 mph | 9% |
| Sunday | 97°F | Sunny then Slight Chance Rain Showers | 0 mph | 18% |
| Sunday Night | 73°F | Mostly Clear | 0 mph | 10% |
| Monday | 97°F | Mostly Sunny | 0 to 5 mph WSW | 11% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 0 mph | 25% |
| Tuesday | 92°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph NE | 32% |
| Tuesday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph NNE | 32% |
| Wednesday | 86°F | Mostly Sunny | 5 mph N | 13% |
| Wednesday Night | 62°F | Mostly Clear | 0 to 5 mph N | 13% |
| Thursday | 84°F | Mostly Sunny | 0 to 5 mph N | 5% |
| Thursday Night | 61°F | Mostly Clear | 0 to 5 mph NNE | 4% |
| Friday | 85°F | Mostly Sunny | 0 to 5 mph NNE | 2% |
| Friday Night | 60°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Walnut Grove, TN
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
7b
Explore more for Walnut Grove, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Waynesboro, Tn (18.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.