Mercer, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mercer, a community in Madison County, Tennessee.
This Afternoon
77°F
Partly Sunny
Partly sunny, with a high near 77. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.
7-day forecast for Mercer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Partly Sunny | 15 to 20 mph SSE | 3% |
| Tonight | 58°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 15 mph SSW | 98% |
| Wednesday | 71°F | Mostly Sunny | 5 to 10 mph WSW | 7% |
| Wednesday Night | 43°F | Partly Cloudy | 0 mph | 0% |
| Thursday | 71°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Thursday Night | 45°F | Partly Cloudy | 0 mph | 0% |
| Friday | 66°F | Mostly Sunny | 0 to 10 mph NNW | 2% |
| Friday Night | 39°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 60°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 34°F | Mostly Cloudy | 0 to 5 mph N | 1% |
| Sunday | 62°F | Mostly Sunny | 0 to 10 mph NNW | 5% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph NW | 3% |
| Monday | 65°F | Sunny | 0 to 5 mph NW | 0% |
| Monday Night | 34°F | Mostly Clear | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mercer (35.475, -89.039). Updated through the day.
Growing snapshot for Mercer
Last spring frost
Apr 5
First fall frost
Oct 29
Growing season
207 days
Hardiness zone
7b
More local growing data for Mercer: nearby ZIP 38392 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jackson Mckellar Ap, Tn (11.2 mi from Mercer). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.