Cowan, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cowan, a city in Franklin County, Tennessee.
Overnight
68°F
Partly Cloudy
Partly cloudy, with a low around 68. Wind around 0 mph.
7-day forecast for Cowan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Partly Cloudy | 0 mph | 1% |
| Tuesday | 86°F | Chance Showers And Thunderstorms | 0 mph | 53% |
| Tuesday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 30% |
| Wednesday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 66% |
| Wednesday Night | 70°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 mph | 56% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 36% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 36% |
| Friday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 47% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 0 mph | 47% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 0 mph | 66% |
| Saturday Night | 71°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 66% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 0 mph | 51% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 51% |
| Monday | 88°F | Chance Showers And Thunderstorms | 0 mph | 48% |
Forecast source: National Weather Service (api.weather.gov) for Cowan (35.163, -86.014). Updated through the day.
Growing snapshot for Cowan
Last spring frost
Apr 6
First fall frost
Oct 29
Growing season
204 days
Hardiness zone
7b
More local growing data for Cowan: nearby ZIP 37318 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Winchester 5Se, Tn (3.1 mi from Cowan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.