Wynnburg, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wynnburg, a community in Lake County, Tennessee.
Today
87°F
Sunny
Sunny, with a high near 87. North northeast wind 0 to 5 mph.
7-day forecast for Wynnburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 0 to 5 mph NNE | 0% |
| Tonight | 68°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Wednesday | 89°F | Sunny | 0 mph | 0% |
| Wednesday Night | 70°F | Mostly Clear | 0 mph | 0% |
| Thursday | 91°F | Mostly Sunny | 5 mph SSW | 7% |
| Thursday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 15% |
| Friday | 89°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 31% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 31% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 32% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 32% |
| Sunday | 90°F | Mostly Sunny | 0 to 5 mph SSW | 12% |
| Sunday Night | 73°F | Mostly Clear | 0 to 5 mph S | 12% |
| Monday | 91°F | Sunny | 5 to 10 mph SSW | 6% |
| Monday Night | 74°F | Partly Cloudy | 5 mph SSW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Wynnburg (36.330, -89.469). Updated through the day.
Growing snapshot for Wynnburg
Last spring frost
Apr 3
First fall frost
Nov 1
Growing season
211 days
Hardiness zone
7b
More local growing data for Wynnburg: nearby ZIP 38077 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Samburg Wr, Tn (12.8 mi from Wynnburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.