37401 Weather (Chattanooga, TN)

Weather forecast for: Chattanooga TN

Last Update: 7:06 am EDT Sep 12, 2026

Today: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 88. Heat index values as high as 96. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly clear, with a low around 71. Calm wind.

Sunday: Sunny and hot, with a high near 93. Heat index values as high as 99. Calm wind.

Sunday Night: Mostly clear, with a low around 70. Calm wind.

Monday: Sunny and hot, with a high near 95. Calm wind becoming northeast around 5 mph in the afternoon.

Monday Night: Mostly clear, with a low around 70. Northeast wind around 5 mph becoming calm.

Tuesday: Sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.

Tuesday Night: Mostly clear, with a low around 71.

Wednesday: Sunny and hot, with a high near 95.

Wednesday Night: Mostly clear, with a low around 70.

Thursday: A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 95.

Thursday Night: A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.

Friday: A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 94.