S
M
T
W
T
F
S
26
62°
45°
27
74°
41°
28
76°
54°
29
58°
49°
30
53°
38°
1
49°
36°
2
47°
35°
3
61°
30°
4
73°
48°
5
73°
58°
6
60°
45°
7
60°
37°
8
60°
41°
9
70°
51°
10
64°
44°
11
65°
37°
12
69°
39°
13
71°
47°
14
61°
42°
15
70°
48°
16
77°
61°
17
84°
60°
18
92°
64°
19
85°
60°
20
74°
48°
21
67°
47°
22
72°
51°
23
76°
49°
24
75°
55°
25
80°
57°
26
77°
58°
27
77°
58°
28
79°
52°
29
77°
58°
30
76°
56°
31
71°
53°
1
71°
49°
2
72°
49°
3
70°
50°
4
72°
51°
5
78°
59°
6
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dennison
Dennison's May 2026 forecast shows daily high temperatures ranging from 67° to 92°, with overnight lows between 47° and 64°. The average high for May is 76° with an average low of 54°. 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 Dennison. See also: June | July | August.
