Jamestown, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jamestown, a city in Fentress County, Tennessee.
Tonight
68°F
Mostly Clear
Mostly clear, with a low around 68. South southeast wind around 5 mph.
7-day forecast for Jamestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 68°F | Mostly Clear | 5 mph SSE | 7% |
| Sunday | 89°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph WSW | 18% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 18% |
| Monday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph W | 38% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 46% |
| Tuesday | 82°F | Showers And Thunderstorms | 5 mph NNE | 76% |
| Tuesday Night | 62°F | Showers And Thunderstorms | 0 to 5 mph E | 76% |
| Wednesday | 76°F | Rain Showers | 0 to 5 mph SW | 75% |
| Wednesday Night | 59°F | Showers And Thunderstorms | 0 mph | 75% |
| Thursday | 75°F | Chance Rain Showers | 0 to 5 mph NW | 40% |
| Thursday Night | 56°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph NNE | 25% |
| Friday | 74°F | Mostly Sunny | 0 to 5 mph N | 12% |
| Friday Night | 54°F | Partly Cloudy | 0 to 5 mph NNE | 12% |
| Saturday | 74°F | Mostly Sunny | 0 to 5 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Jamestown (36.431, -84.933). Updated through the day.
Growing snapshot for Jamestown
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
183 days
Hardiness zone
7a
More local growing data for Jamestown: nearby ZIP 38556 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jamestown, Tn (1.5 mi from Jamestown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.