Harman US

Loudon, TN Weather & Growing Conditions

This Afternoon
94°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 101. Northeast wind around 0 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 94°F Slight Chance Showers And Thunderstorms 0 mph 21%
Tonight 69°F Slight Chance Showers And Thunderstorms then Partly Cloudy 0 mph 23%
Sunday 92°F Mostly Sunny then Slight Chance Showers And Thunderstorms 0 to 5 mph SW 15%
Sunday Night 68°F Chance Showers And Thunderstorms then Mostly Cloudy 0 mph 26%
Monday 92°F Mostly Sunny then Chance Showers And Thunderstorms 0 mph 33%
Monday Night 66°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 0 mph 67%
Tuesday 86°F Showers And Thunderstorms 0 mph 84%
Tuesday Night 64°F Showers And Thunderstorms 0 mph 84%
Wednesday 81°F Showers And Thunderstorms 0 mph 78%
Wednesday Night 62°F Showers And Thunderstorms 0 mph 78%
Thursday 79°F Chance Rain Showers 0 to 5 mph NW 32%
Thursday Night 59°F Slight Chance Rain Showers then Partly Cloudy 0 to 5 mph N 24%
Friday 78°F Mostly Sunny then Slight Chance Rain Showers 0 to 5 mph N 17%
Friday Night 57°F Slight Chance Rain Showers then Partly Cloudy 0 to 5 mph NE 17%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Loudon, TN

Last spring frost
Apr 5
First fall frost
Nov 1
Growing season
210 days
Hardiness zone
7b

Explore more for Loudon, TN: full frost dates · planting calendar · Tennessee frost dates

Climate data from the nearest NOAA station, Lenoir City, Tn (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.