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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
91°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. North wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Oak Grove

WhenTempForecastWindPrecip
This Afternoon 91°F Chance Showers And Thunderstorms 0 mph 31%
Tonight 66°F Chance Showers And Thunderstorms 0 mph 33%
Sunday 89°F Mostly Sunny then Chance Showers And Thunderstorms 0 to 5 mph SW 39%
Sunday Night 65°F Chance Showers And Thunderstorms then Partly Cloudy 0 to 5 mph S 35%
Monday 88°F Mostly Sunny then Chance Showers And Thunderstorms 0 to 5 mph SW 46%
Monday Night 65°F Chance Showers And Thunderstorms 0 to 5 mph E 50%
Tuesday 83°F Showers And Thunderstorms 0 mph 84%
Tuesday Night 62°F Showers And Thunderstorms 0 to 5 mph E 84%
Wednesday 78°F Rain Showers Likely 5 mph SE 73%
Wednesday Night 59°F Showers And Thunderstorms Likely 5 to 10 mph E 73%
Thursday 75°F Rain Showers Likely 0 to 5 mph NE 55%
Thursday Night 56°F Chance Rain Showers 0 to 5 mph NE 40%
Friday 75°F Mostly Sunny then Chance Rain Showers 0 to 5 mph N 28%
Friday Night 52°F Chance Rain Showers then Partly Cloudy 0 to 5 mph N 28%

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

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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.