S
M
T
W
T
F
S
26
88°
67°
27
91°
63°
28
75°
57°
29
70°
53°
30
70°
52°
1
85°
64°
2
79°
43°
3
83°
45°
4
88°
53°
5
75°
51°
6
69°
48°
7
77°
42°
8
86°
46°
9
86°
55°
10
67°
55°
11
78°
50°
12
84°
50°
13
90°
58°
14
91°
65°
15
93°
67°
16
88°
72°
17
87°
70°
18
92°
74°
19
79°
55°
20
77°
55°
21
75°
62°
22
83°
61°
23
83°
61°
24
87°
64°
25
88°
61°
26
87°
66°
27
82°
65°
28
87°
63°
29
90°
68°
30
87°
69°
31
85°
65°
1
80°
61°
2
83°
61°
3
84°
60°
4
83°
59°
5
87°
63°
6
90°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chattanooga
Chattanooga's May 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 59° and 69°. The average high for May is 85° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Chattanooga. See also: June | July | August.
