S
M
T
W
T
F
S
26
81°
60°
27
81°
59°
28
71°
61°
29
82°
63°
30
72°
57°
1
66°
54°
2
68°
45°
3
71°
39°
4
79°
43°
5
78°
48°
6
78°
66°
7
71°
53°
8
69°
51°
9
73°
54°
10
81°
58°
11
78°
57°
12
77°
58°
13
80°
57°
14
75°
48°
15
80°
47°
16
85°
52°
17
90°
62°
18
89°
68°
19
88°
69°
20
88°
67°
21
87°
69°
22
81°
68°
23
81°
67°
24
81°
67°
25
79°
69°
26
84°
68°
27
83°
67°
28
83°
68°
29
81°
67°
30
79°
64°
31
79°
62°
1
80°
60°
2
82°
65°
3
81°
62°
4
82°
64°
5
93°
70°
6
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Knoxville
Knoxville's May 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 60° and 70°. The average high for May is 82° with an average low of 66°. 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 Knoxville. See also: June | July | August.
