Chattanooga, TN Weather & Growing Conditions
This Afternoon
98°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 98, with temperatures falling to around 92 in the afternoon. Heat index values as high as 98. North wind around 5 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 |
|---|---|---|---|---|
| This Afternoon | 98°F | Chance Showers And Thunderstorms | 5 mph N | 45% |
| Tonight | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph NE | 35% |
| Sunday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 23% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 25% |
| Monday | 96°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 40% |
| Monday Night | 71°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 56% |
| Tuesday | 91°F | Showers And Thunderstorms Likely | 0 mph | 73% |
| Tuesday Night | 69°F | Showers And Thunderstorms Likely | 0 mph | 73% |
| Wednesday | 85°F | Rain Showers Likely | 0 to 5 mph S | 73% |
| Wednesday Night | 65°F | Showers And Thunderstorms Likely | 5 mph E | 73% |
| Thursday | 83°F | Slight Chance Rain Showers | 0 to 5 mph E | 24% |
| Thursday Night | 63°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 24% |
| Friday | 83°F | Mostly Sunny | 0 to 5 mph N | 11% |
| Friday Night | 60°F | Mostly Clear | 5 mph N | 11% |
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 (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.