Cowan, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cowan, a city in Franklin County, Tennessee.
Overnight
71°F
Mostly Clear
Mostly clear, with a low around 71. Wind around 0 mph.
7-day forecast for Cowan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Clear | 0 mph | 4% |
| Saturday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 mph | 46% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SE | 31% |
| Sunday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 18% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 18% |
| Monday | 94°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 48% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 0 mph | 50% |
| Tuesday | 90°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 66% |
| Tuesday Night | 66°F | Showers And Thunderstorms Likely | 0 mph | 66% |
| Wednesday | 84°F | Chance Rain Showers | 0 to 5 mph N | 43% |
| Wednesday Night | 62°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph NNE | 43% |
| Thursday | 82°F | Mostly Sunny | 0 to 5 mph N | 14% |
| Thursday Night | 61°F | Partly Cloudy | 0 to 5 mph NNE | 14% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph N | 10% |
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 Sep 19, 2026.