Oak Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oak Grove, a community in Washington County, Tennessee.
This Afternoon
71°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 71, with temperatures falling to around 68 in the afternoon. Southeast wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Oak Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 70% |
| Tonight | 59°F | Showers And Thunderstorms | 0 to 5 mph S | 91% |
| Thursday | 73°F | Chance Rain Showers | 0 to 5 mph SW | 30% |
| Thursday Night | 52°F | Mostly Cloudy | 0 mph | 13% |
| Friday | 68°F | Mostly Sunny | 0 to 5 mph NW | 13% |
| Friday Night | 43°F | Partly Cloudy | 0 to 5 mph NW | 3% |
| Saturday | 59°F | Mostly Sunny | 0 to 5 mph NW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Sunday | 59°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Sunday Night | 32°F | Mostly Clear | 0 to 5 mph NW | 2% |
| Monday | 61°F | Sunny | 0 to 5 mph W | 3% |
| Monday Night | 32°F | Mostly Clear | 0 mph | 3% |
| Tuesday | 64°F | Sunny | 0 to 5 mph W | 2% |
| Tuesday Night | 35°F | Mostly Clear | 0 to 5 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Oak Grove (36.425, -82.434). Updated through the day.
Growing snapshot for Oak Grove
Last spring frost
Apr 16
First fall frost
Oct 24
Growing season
190 days
Hardiness zone
7b
More local growing data for Oak Grove: nearby ZIP 37615 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bristol Tri City Ap, Tn (5.8 mi from Oak Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.