Jamestown, TN Weather & Growing Conditions
This Afternoon
94°F
Chance Showers And Thunderstorms
A slight chance of rain showers between 1pm and 2pm, then a chance of showers and thunderstorms. Mostly sunny. High near 94, with temperatures falling to around 89 in the afternoon. Heat index values as high as 101. West southwest wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 94°F | Chance Showers And Thunderstorms | 0 mph | 29% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 28% |
| Sunday | 93°F | Sunny then Slight Chance Rain Showers | 0 to 5 mph WSW | 18% |
| Sunday Night | 70°F | Slight Chance Rain Showers | 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 | Showers And Thunderstorms Likely | 0 to 5 mph W | 67% |
| Wednesday Night | 61°F | Showers And Thunderstorms Likely | 0 mph | 65% |
| Thursday | 77°F | Chance Rain Showers | 0 to 5 mph NNW | 26% |
| Thursday Night | 58°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 20% |
| Friday | 76°F | Mostly Sunny | 0 to 5 mph NNE | 7% |
| Friday Night | 56°F | Partly Cloudy | 0 to 5 mph NE | 7% |
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 19, 2026.