Chattanooga, TN Weather & Growing Conditions
Today
90°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 90. Heat index values as high as 98. North wind around 0 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Chance Showers And Thunderstorms | 0 mph | 47% |
| Tonight | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 49% |
| Wednesday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 54% |
| Wednesday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 50% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 44% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 44% |
| Friday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 36% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 36% |
| Saturday | 90°F | Slight Chance Showers And Thunderstorms | 0 mph | 63% |
| Saturday Night | 73°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 63% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 mph | 47% |
| Sunday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 47% |
| Monday | 91°F | Chance Showers And Thunderstorms | 0 mph | 43% |
| Monday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 43% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chattanooga, TN
Last spring frost
Mar 31
First fall frost
Nov 6
Growing season
219 days
Hardiness zone
8a
Explore more for Chattanooga, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Lookout Mtn-Point Park, Tn (1.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.