Jamestown, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jamestown, a city in Fentress County, Tennessee.
Today
86°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 86, with temperatures falling to around 81 in the afternoon. Northeast wind 0 to 5 mph. Chance of precipitation is 30%.
7-day forecast for Jamestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph NE | 26% |
| Tonight | 67°F | Chance Showers And Thunderstorms then Patchy Fog | 0 mph | 25% |
| Wednesday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph WSW | 56% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 32% |
| Thursday | 85°F | Chance Showers And Thunderstorms | 5 mph SSW | 54% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 54% |
| Friday | 86°F | Showers And Thunderstorms Likely | 5 mph SSW | 61% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph S | 61% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 5 mph SW | 66% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 66% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 42% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSW | 42% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 mph SW | 31% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSW | 31% |
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 Aug 4, 2026.