Cottage Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cottage Grove, a town in Henry County, Tennessee.
Tonight
72°F
Mostly Clear
Mostly clear, with a low around 72. South wind around 0 mph.
7-day forecast for Cottage Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Mostly Clear | 0 mph | 1% |
| Sunday | 98°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
| Sunday Night | 72°F | Partly Cloudy | 0 to 5 mph SSW | 2% |
| Monday | 95°F | Mostly Sunny | 0 to 5 mph NNW | 11% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph NNE | 24% |
| Tuesday | 86°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph NNE | 23% |
| Tuesday Night | 61°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 15 mph N | 23% |
| Wednesday | 81°F | Mostly Sunny | 5 to 10 mph N | 4% |
| Wednesday Night | 59°F | Partly Cloudy | 5 to 10 mph N | 4% |
| Thursday | 81°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 10 mph NNE | 0% |
| Friday | 82°F | Mostly Sunny | 5 to 10 mph NNE | 1% |
| Friday Night | 59°F | Partly Cloudy | 5 to 10 mph NNE | 2% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Cottage Grove (36.378, -88.479). Updated through the day.
Growing snapshot for Cottage Grove
Last spring frost
Apr 7
First fall frost
Oct 31
Growing season
206 days
Hardiness zone
7b
More local growing data for Cottage Grove: nearby ZIP 38224 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Paris 2 Se, Tn (12.9 mi from Cottage Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.