Jefferson City, TN Weather & Growing Conditions
This Afternoon
91°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 91. Heat index values as high as 96. North wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 17% |
| Tonight | 67°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph NE | 21% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 18% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 30% |
| Monday | 90°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 40% |
| Monday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph NE | 68% |
| Tuesday | 84°F | Showers And Thunderstorms | 0 to 5 mph W | 84% |
| Tuesday Night | 64°F | Showers And Thunderstorms | 0 mph | 84% |
| Wednesday | 79°F | Showers And Thunderstorms | 0 to 5 mph NE | 80% |
| Wednesday Night | 61°F | Showers And Thunderstorms | 0 to 5 mph N | 80% |
| Thursday | 77°F | Chance Rain Showers | 0 to 5 mph N | 40% |
| Thursday Night | 58°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 21% |
| Friday | 76°F | Slight Chance Rain Showers | 0 to 5 mph N | 17% |
| Friday Night | 56°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph NE | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jefferson City, TN
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
7b
Explore more for Jefferson City, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Jefferson City, Tn (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.