S
M
T
W
T
F
S
29
82°
51°
30
82°
64°
31
83°
64°
1
83°
69°
2
82°
64°
3
82°
70°
4
71°
50°
5
68°
46°
6
71°
47°
7
71°
47°
8
77°
55°
9
79°
57°
10
81°
63°
11
79°
66°
12
72°
68°
13
86°
68°
14
81°
66°
15
74°
65°
16
81°
66°
17
81°
64°
18
65°
47°
19
67°
50°
20
69°
58°
21
79°
63°
22
82°
65°
23
80°
63°
24
74°
55°
25
76°
52°
26
68°
51°
27
71°
59°
28
70°
60°
29
70°
61°
30
73°
62°
1
79°
63°
2
79°
62°
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 65° to 86°, with overnight lows between 47° and 68°. The average high for April is 75° with an average low of 61°. 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.