S
M
T
W
T
F
S
26
65°
31°
27
73°
37°
28
69°
46°
29
54°
43°
30
51°
34°
1
50°
34°
2
50°
36°
3
50°
39°
4
54°
45°
5
54°
40°
6
57°
45°
7
52°
39°
8
53°
41°
9
52°
41°
10
54°
40°
11
53°
40°
12
57°
45°
13
59°
37°
14
63°
42°
15
60°
38°
16
60°
39°
17
61°
40°
18
63°
48°
19
65°
49°
20
71°
49°
21
71°
48°
22
67°
43°
23
62°
47°
24
67°
43°
25
62°
42°
26
64°
46°
27
63°
48°
28
64°
52°
29
70°
51°
30
69°
44°
31
68°
43°
1
64°
43°
2
65°
44°
3
66°
44°
4
65°
45°
5
66°
45°
6
67°
51°
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 71°, with overnight lows between 34° and 52°. The average high for May is 61° 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 May weather will actually feel in Addison. See also: June | July | August.