S
M
T
W
T
F
S
29
65°
36°
30
75°
54°
31
77°
61°
1
63°
39°
2
76°
39°
3
78°
64°
4
73°
44°
5
50°
40°
6
56°
37°
7
45°
31°
8
67°
52°
9
76°
54°
10
69°
44°
11
66°
49°
12
80°
61°
13
73°
61°
14
71°
56°
15
61°
44°
16
64°
46°
17
65°
47°
18
69°
50°
19
70°
51°
20
73°
56°
21
74°
41°
22
58°
37°
23
59°
47°
24
69°
49°
25
70°
45°
26
61°
40°
27
59°
40°
28
61°
44°
29
69°
49°
30
69°
51°
1
72°
49°
2
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Knox
Knox's April 2026 forecast shows daily high temperatures ranging from 58° to 80°, with overnight lows between 37° and 61°. The average high for April is 68° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Knox. See also: May | June | July.