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Maynardville, TN Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Maynardville, a city in Union County, Tennessee.

This Afternoon
93°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 97. Northeast wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Maynardville

WhenTempForecastWindPrecip
This Afternoon 93°F Chance Showers And Thunderstorms 0 mph 28%
Tonight 68°F Chance Showers And Thunderstorms then Partly Cloudy 0 mph 26%
Sunday 91°F Mostly Sunny 0 to 5 mph SW 12%
Sunday Night 68°F Partly Cloudy 0 mph 14%
Monday 91°F Mostly Sunny then Chance Showers And Thunderstorms 0 mph 46%
Monday Night 67°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 0 mph 55%
Tuesday 85°F Showers And Thunderstorms 0 mph 80%
Tuesday Night 64°F Showers And Thunderstorms 0 mph 80%
Wednesday 80°F Showers And Thunderstorms 0 mph 86%
Wednesday Night 61°F Showers And Thunderstorms 0 mph 86%
Thursday 77°F Chance Rain Showers 0 to 5 mph N 52%
Thursday Night 59°F Chance Showers And Thunderstorms then Partly Cloudy 0 to 5 mph N 39%
Friday 77°F Mostly Sunny 0 to 5 mph N 14%
Friday Night 55°F Partly Cloudy 5 mph N 14%

Forecast source: National Weather Service (api.weather.gov) for Maynardville (36.247, -83.806). Updated through the day.

Growing snapshot for Maynardville

Last spring frost
Apr 22
First fall frost
Oct 25
Growing season
184 days
Hardiness zone
7b

More local growing data for Maynardville: nearby ZIP 37807 weather · frost dates · planting calendar · Tennessee frost dates

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Climate data from the nearest NOAA station, Norris, Tn (13.4 mi from Maynardville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.