S
M
T
W
T
F
S
26
88°
73°
27
92°
73°
28
82°
65°
29
70°
62°
30
67°
57°
1
62°
54°
2
65°
53°
3
73°
57°
4
76°
57°
5
82°
62°
6
81°
64°
7
84°
67°
8
80°
61°
9
77°
59°
10
82°
65°
11
84°
66°
12
85°
65°
13
80°
59°
14
74°
58°
15
76°
58°
16
77°
60°
17
80°
63°
18
80°
62°
19
81°
64°
20
82°
65°
21
81°
67°
22
82°
68°
23
81°
67°
24
80°
69°
25
80°
67°
26
81°
68°
27
81°
67°
28
82°
65°
29
82°
64°
30
83°
66°
31
83°
67°
1
84°
68°
2
87°
70°
3
87°
72°
4
88°
72°
5
90°
73°
6
88°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Addison
Addison's May 2026 forecast shows daily high temperatures ranging from 62° to 92°, with overnight lows between 53° and 73°. The average high for May is 80° with an average low of 65°. 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 Addison. See also: June | July | August.