S
M
T
W
T
F
S
26
92°
72°
27
94°
74°
28
94°
74°
29
91°
69°
30
88°
70°
31
88°
70°
1
87°
69°
2
90°
69°
3
90°
71°
4
89°
69°
5
86°
68°
6
87°
68°
7
86°
73°
8
87°
72°
9
87°
73°
10
88°
72°
11
87°
71°
12
88°
73°
13
88°
73°
14
86°
72°
15
87°
73°
16
85°
72°
17
86°
70°
18
85°
67°
19
86°
68°
20
85°
67°
21
85°
68°
22
86°
69°
23
85°
70°
24
85°
72°
25
86°
71°
26
89°
72°
27
90°
72°
28
90°
71°
29
85°
71°
30
83°
70°
31
84°
69°
1
86°
68°
2
86°
68°
3
89°
69°
4
89°
69°
5
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
Lawn-Garden-December Weather in Chattanooga
Chattanooga's Lawn-Garden-December 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 67° and 74°. The average high for Lawn-Garden-December is 87° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how Lawn-Garden-December weather will actually feel in Chattanooga. See also: September | October | November.
