Oak Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oak Grove, a community in Washington County, Tennessee.
Overnight
66°F
Areas Of Fog
Areas of fog. Mostly cloudy, with a low around 66. Wind around 0 mph.
7-day forecast for Oak Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Areas Of Fog | 0 mph | 2% |
| Saturday | 89°F | Areas Of Fog then Slight Chance Showers And Thunderstorms | 0 mph | 17% |
| Saturday Night | 66°F | Slight Chance Showers And Thunderstorms | 0 mph | 23% |
| Sunday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 27% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 38% |
| Monday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 51% |
| Monday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 65% |
| Tuesday | 82°F | Showers And Thunderstorms | 0 to 5 mph S | 87% |
| Tuesday Night | 61°F | Showers And Thunderstorms | 5 mph SE | 87% |
| Wednesday | 76°F | Rain Showers Likely | 5 mph SE | 69% |
| Wednesday Night | 58°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 69% |
| Thursday | 76°F | Chance Rain Showers | 0 to 5 mph NW | 47% |
| Thursday Night | 56°F | Chance Rain Showers | 0 to 5 mph NE | 32% |
| Friday | 75°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 18% |
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 Sep 19, 2026.