Jamestown, TN Weather & Growing Conditions
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 around 0 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 26% |
| Tonight | 67°F | Chance Showers And Thunderstorms then Patchy Fog | 0 mph | 26% |
| Wednesday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph WSW | 57% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSW | 31% |
| Thursday | 85°F | Chance Showers And Thunderstorms | 5 mph SSW | 55% |
| Thursday Night | 68°F | Showers And Thunderstorms Likely then Partly Cloudy | 5 mph S | 55% |
| Friday | 86°F | Showers And Thunderstorms Likely | 5 mph SSW | 61% |
| Friday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph S | 61% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 5 mph SSW | 67% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 67% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 43% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 43% |
| Monday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 31% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jamestown, TN
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
183 days
Hardiness zone
7a
Explore more for Jamestown, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Jamestown, Tn (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.