S
M
T
W
T
F
S
26
62°
41°
27
72°
37°
28
62°
51°
29
57°
44°
30
49°
36°
1
42°
32°
2
43°
28°
3
54°
43°
4
64°
54°
5
65°
49°
6
53°
46°
7
48°
33°
8
49°
36°
9
55°
40°
10
57°
39°
11
57°
38°
12
56°
40°
13
60°
42°
14
62°
45°
15
63°
42°
16
69°
48°
17
71°
49°
18
70°
47°
19
67°
45°
20
72°
48°
21
69°
47°
22
66°
41°
23
61°
40°
24
62°
41°
25
63°
42°
26
63°
43°
27
64°
42°
28
64°
42°
29
65°
43°
30
65°
43°
31
70°
52°
1
67°
48°
2
68°
45°
3
68°
51°
4
70°
52°
5
70°
50°
6
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Knox
Knox's May 2026 forecast shows daily high temperatures ranging from 43° to 76°, with overnight lows between 28° and 54°. The average high for May is 63° with an average low of 44°. 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 Knox. See also: June | July | August.
