Mercer, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mercer, a community in Madison County, Tennessee.
Overnight
72°F
Mostly Clear
Mostly clear, with a low around 72. Wind around 0 mph.
7-day forecast for Mercer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Mostly Clear | 0 mph | 1% |
| Saturday | 99°F | Sunny | 0 to 5 mph WNW | 2% |
| Saturday Night | 72°F | Mostly Clear | 0 mph | 0% |
| Sunday | 99°F | Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 73°F | Partly Cloudy | 0 to 5 mph SSW | 1% |
| Monday | 97°F | Mostly Sunny | 0 to 5 mph W | 8% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 22% |
| Tuesday | 90°F | Mostly Sunny | 5 to 10 mph N | 13% |
| Tuesday Night | 63°F | Partly Cloudy | 5 to 15 mph N | 13% |
| Wednesday | 84°F | Mostly Sunny | 5 to 10 mph N | 9% |
| Wednesday Night | 61°F | Mostly Clear | 5 to 10 mph NNE | 7% |
| Thursday | 84°F | Sunny | 5 to 10 mph NNE | 6% |
| Thursday Night | 61°F | Mostly Clear | 0 to 10 mph NNE | 6% |
| Friday | 83°F | Mostly Sunny | 5 to 10 mph NNE | 6% |
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 Sep 19, 2026.