Harman US

Jamestown, TN Weather & Growing Conditions

This Afternoon
94°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 94. Heat index values as high as 97. Southwest wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 94°F Chance Showers And Thunderstorms 0 mph 39%
Tonight 70°F Chance Showers And Thunderstorms then Mostly Clear 0 mph 28%
Sunday 93°F Sunny then Slight Chance Showers And Thunderstorms 0 to 5 mph WSW 18%
Sunday Night 70°F Slight Chance Showers And Thunderstorms 0 mph 17%
Monday 92°F Mostly Sunny then Chance Showers And Thunderstorms 0 to 5 mph WSW 32%
Monday Night 67°F Chance Showers And Thunderstorms 0 mph 46%
Tuesday 86°F Showers And Thunderstorms Likely 0 to 5 mph NNE 73%
Tuesday Night 64°F Showers And Thunderstorms Likely 0 mph 73%
Wednesday 79°F Rain Showers Likely 0 to 5 mph WSW 72%
Wednesday Night 61°F Showers And Thunderstorms Likely 0 mph 72%
Thursday 78°F Chance Rain Showers then Slight Chance Showers And Thunderstorms 0 to 5 mph NNW 34%
Thursday Night 59°F Slight Chance Showers And Thunderstorms then Partly Cloudy 0 mph 21%
Friday 77°F Mostly Sunny 0 to 5 mph N 12%
Friday Night 56°F Partly Cloudy 0 to 5 mph NNE 12%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Jamestown, TN

Last spring frost
Apr 25
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
7a

Explore more for Jamestown, TN: full frost dates · planting calendar · Tennessee frost dates

Climate data from the nearest NOAA station, Pickett Sp, Tn (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.