Summertown, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Summertown, a community in Lawrence County, Tennessee.
Overnight
71°F
Mostly Clear
Mostly clear, with a low around 71. Wind around 0 mph.
7-day forecast for Summertown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Clear | 0 mph | 1% |
| Saturday | 97°F | Sunny | 0 mph | 7% |
| Saturday Night | 71°F | Mostly Clear | 0 mph | 5% |
| Sunday | 96°F | Mostly Sunny | 0 to 5 mph SW | 5% |
| Sunday Night | 70°F | Partly Cloudy | 0 mph | 4% |
| Monday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph WSW | 16% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Rain Showers | 0 mph | 48% |
| Tuesday | 88°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph NNE | 37% |
| Tuesday Night | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 38% |
| Wednesday | 83°F | Slight Chance Rain Showers | 0 to 5 mph N | 20% |
| Wednesday Night | 60°F | Slight Chance Rain Showers then Mostly Clear | 0 to 5 mph N | 20% |
| Thursday | 81°F | Mostly Sunny | 0 to 5 mph NNE | 9% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 5 mph NNE | 9% |
| Friday | 81°F | Mostly Sunny | 0 to 10 mph NNE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Summertown (35.434, -87.308). Updated through the day.
Growing snapshot for Summertown
Last spring frost
Apr 5
First fall frost
Oct 28
Growing season
204 days
Hardiness zone
7b
More local growing data for Summertown: nearby ZIP 38483 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mt Pleasant 1N, Tn (10.9 mi from Summertown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.