Chattanooga, TN Weather & Growing Conditions
Today
93°F
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Sunny. High near 93, with temperatures falling to around 87 in the afternoon. Heat index values as high as 98. Northeast wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Sunny then Chance Showers And Thunderstorms | 0 mph | 37% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 29% |
| Sunday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 28% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 23% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 43% |
| Monday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph E | 62% |
| Tuesday | 85°F | Showers And Thunderstorms | 0 mph | 81% |
| Tuesday Night | 66°F | Showers And Thunderstorms | 0 to 5 mph E | 81% |
| Wednesday | 79°F | Rain Showers Likely | 5 mph S | 64% |
| Wednesday Night | 62°F | Showers And Thunderstorms Likely | 5 mph E | 64% |
| Thursday | 78°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph NE | 16% |
| Thursday Night | 61°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph N | 16% |
| Friday | 78°F | Mostly Sunny | 0 to 5 mph N | 13% |
| Friday Night | 59°F | Partly Cloudy | 5 mph N | 13% |
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
7b
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 (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.