Mercer, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mercer, a community in Madison County, Tennessee.
Today
88°F
Sunny
Sunny, with a high near 88. North northeast wind 0 to 5 mph.
7-day forecast for Mercer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 0 to 5 mph NNE | 0% |
| Tonight | 68°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Wednesday | 90°F | Sunny | 0 mph | 7% |
| Wednesday Night | 70°F | Mostly Clear | 0 mph | 4% |
| Thursday | 93°F | Sunny | 0 to 5 mph SW | 2% |
| Thursday Night | 73°F | Partly Cloudy | 0 mph | 10% |
| Friday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 20% |
| Friday Night | 72°F | Slight Chance Showers And Thunderstorms | 0 mph | 20% |
| Saturday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 34% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 34% |
| Sunday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 20% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 20% |
| Monday | 92°F | Mostly Sunny | 0 to 5 mph SSW | 10% |
| Monday Night | 73°F | Partly Cloudy | 0 to 5 mph S | 10% |
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 Aug 4, 2026.