Flat Top Mountain, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flat Top Mountain, a community in Hamilton County, Tennessee.
Today
85°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. East wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Flat Top Mountain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 42% |
| Tonight | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 45% |
| Wednesday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 60% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 0 mph | 50% |
| Thursday | 85°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 55% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 mph | 55% |
| Friday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 42% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 42% |
| Saturday | 85°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 65% |
| Saturday Night | 69°F | Showers And Thunderstorms Likely | 0 mph | 65% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 0 mph | 44% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 44% |
| Monday | 86°F | Chance Showers And Thunderstorms | 0 mph | 46% |
| Monday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 46% |
Forecast source: National Weather Service (api.weather.gov) for Flat Top Mountain (35.332, -85.200). Updated through the day.
Growing snapshot for Flat Top Mountain
Last spring frost
Apr 7
First fall frost
Oct 29
Growing season
203 days
Hardiness zone
7b
More local growing data for Flat Top Mountain: nearby ZIP 37379 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Apison
Chattanooga
Collegedale
East Ridge
Fairmount
Falling Water
Graysville
Harrison
Lakesite
Lone Oak
Lookout Mountain
Middle Valley
Mowbray Mountain
Ooltewah
Red Bank
Ridgeside
Sale Creek
Soddy-Daisy
Walden
Climate data from the nearest NOAA station, Soddy Daisy-Mowbray Mtn, Tn (2.6 mi from Flat Top Mountain). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.