Oak Grove, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oak Grove, a community in Washington County, Tennessee.
Today
86°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 86, with temperatures falling to around 81 in the afternoon. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Oak Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 52% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 58% |
| Wednesday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 52% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 52% |
| Thursday | 85°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 52% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph S | 52% |
| Friday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 45% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 45% |
| Saturday | 86°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 61% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 61% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 34% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 34% |
| Monday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 33% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 33% |
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 Aug 4, 2026.