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
79°
56°
10
84°
60°
11
73°
50°
12
75°
49°
13
81°
52°
14
76°
50°
15
79°
57°
16
84°
64°
17
88°
66°
18
90°
67°
19
87°
66°
20
88°
68°
21
86°
67°
22
87°
60°
23
84°
64°
24
83°
63°
25
85°
65°
26
85°
65°
27
84°
64°
28
86°
66°
29
86°
66°
30
85°
65°
31
85°
66°
1
86°
66°
2
87°
67°
3
88°
68°
4
86°
67°
5
81°
66°
6
87°
67°
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 73° to 90°, with overnight lows between 49° and 68°. The average high for May is 84° with an average low of 63°. 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.
