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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
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.