Cottage Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cottage Grove, a town in Henry County, Tennessee.
Today
68°F
Partly Sunny
Partly sunny. High near 68, with temperatures falling to around 60 in the afternoon. West southwest wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Cottage Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Partly Sunny | 5 to 10 mph WSW | 1% |
| Tonight | 45°F | Partly Cloudy | 0 to 5 mph WSW | 0% |
| Thursday | 68°F | Sunny | 0 to 5 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 0 mph | 0% |
| Friday | 63°F | Mostly Sunny | 0 to 10 mph NNW | 0% |
| Friday Night | 39°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 57°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 34°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 58°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 34°F | Mostly Clear | 0 mph | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph WSW | 0% |
| Monday Night | 36°F | Clear | 0 mph | 1% |
| Tuesday | 66°F | Sunny | 0 to 5 mph WSW | 1% |
| Tuesday Night | 40°F | Mostly Clear | 0 mph | 0% |
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 Nov 4, 2026.