S
M
T
W
T
F
S
26
81°
57°
27
80°
58°
28
71°
58°
29
83°
61°
30
71°
56°
1
70°
52°
2
69°
48°
3
71°
44°
4
80°
45°
5
80°
51°
6
74°
64°
7
72°
54°
8
73°
47°
9
78°
52°
10
85°
54°
11
76°
61°
12
78°
57°
13
82°
54°
14
74°
56°
15
80°
48°
16
83°
56°
17
91°
60°
18
89°
66°
19
90°
67°
20
84°
70°
21
83°
71°
22
83°
68°
23
80°
69°
24
83°
68°
25
82°
67°
26
83°
69°
27
84°
67°
28
84°
67°
29
84°
66°
30
80°
66°
31
84°
65°
1
83°
63°
2
87°
67°
3
86°
66°
4
81°
65°
5
81°
62°
6
86°
68°
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 62° and 71°. The average high for May is 84° with an average low of 67°. 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.
