Mercer, TN Weather & Growing Conditions
Overnight
61°F
Mostly Cloudy
Mostly cloudy, with a low around 61. Southwest wind around 5 mph. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Mostly Cloudy | 5 mph SW | 13% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph W | 5% |
| Wednesday Night | 44°F | Mostly Clear | 0 to 5 mph W | 0% |
| Thursday | 70°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Thursday Night | 44°F | Mostly Clear | 0 mph | 0% |
| Friday | 65°F | Mostly Sunny | 0 to 10 mph NNW | 0% |
| Friday Night | 39°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Saturday | 58°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Sunday | 58°F | Mostly Sunny | 0 to 10 mph N | 0% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Monday | 64°F | Sunny | 0 to 5 mph W | 0% |
| Monday Night | 36°F | Clear | 0 mph | 1% |
| Tuesday | 67°F | Sunny | 0 to 5 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mercer, TN
Last spring frost
Apr 5
First fall frost
Oct 29
Growing season
207 days
Hardiness zone
7b
Explore more for Mercer, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Jackson Mckellar Ap, Tn (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.