Calhoun, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calhoun, a town in Mcminn County, Tennessee.
Tonight
64°F
Cloudy then Chance Showers And Thunderstorms
A chance of rain showers between 1am and 4am, then a chance of showers and thunderstorms. Cloudy, with a low around 64. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Calhoun
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph S | 31% |
| Wednesday | 72°F | Showers And Thunderstorms | 10 to 15 mph S | 93% |
| Wednesday Night | 60°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph SW | 79% |
| Thursday | 75°F | Partly Sunny | 0 to 5 mph W | 14% |
| Thursday Night | 49°F | Mostly Cloudy | 0 mph | 9% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NW | 4% |
| Friday Night | 43°F | Mostly Clear | 0 to 5 mph N | 1% |
| Saturday | 65°F | Mostly Sunny | 0 to 10 mph N | 1% |
| Saturday Night | 36°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Sunday | 64°F | Mostly Sunny | 0 to 5 mph N | 5% |
| Sunday Night | 34°F | Partly Cloudy | 0 mph | 6% |
| Monday | 64°F | Mostly Sunny | 0 to 5 mph N | 6% |
| Monday Night | 33°F | Mostly Clear | 0 mph | 3% |
| Tuesday | 67°F | Sunny | 0 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Calhoun (35.302, -84.741). Updated through the day.
Growing snapshot for Calhoun
Last spring frost
Apr 6
First fall frost
Oct 30
Growing season
206 days
Hardiness zone
7b
More local growing data for Calhoun: nearby ZIP 37309 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cleveland Fltr Plt, Tn (6.4 mi from Calhoun). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.