S
M
T
W
T
F
S
29
73°
43°
30
86°
39°
31
66°
39°
1
48°
32°
2
43°
37°
3
39°
36°
4
43°
34°
5
63°
32°
6
45°
36°
7
44°
40°
8
71°
33°
9
51°
33°
10
60°
42°
11
65°
56°
12
70°
57°
13
77°
44°
14
53°
36°
15
55°
43°
16
60°
43°
17
63°
45°
18
63°
46°
19
65°
48°
20
60°
37°
21
63°
43°
22
63°
42°
23
54°
39°
24
55°
33°
25
59°
45°
26
66°
45°
27
66°
44°
28
67°
45°
29
66°
46°
30
63°
43°
1
66°
47°
2
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Denison
Denison's April 2026 forecast shows daily high temperatures ranging from 44° to 77°, with overnight lows between 33° and 57°. The average high for April is 62° with an average low of 43°. 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 Denison. See also: May | June | July.