S
M
T
W
T
F
S
26
60°
35°
27
71°
30°
28
63°
51°
29
56°
47°
30
55°
37°
1
51°
30°
2
51°
35°
3
57°
34°
4
74°
42°
5
75°
49°
6
50°
44°
7
57°
32°
8
58°
32°
9
61°
43°
10
65°
34°
11
57°
29°
12
64°
25°
13
68°
41°
14
50°
43°
15
62°
42°
16
75°
57°
17
77°
52°
18
85°
60°
19
86°
54°
20
69°
43°
21
61°
40°
22
64°
41°
23
66°
44°
24
65°
45°
25
69°
47°
26
71°
45°
27
68°
49°
28
67°
48°
29
67°
50°
30
68°
50°
31
70°
47°
1
67°
43°
2
67°
43°
3
68°
44°
4
69°
44°
5
72°
52°
6
76°
53°
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 50° to 86°, with overnight lows between 40° and 60°. The average high for May is 69° with an average low of 47°. 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.