S
M
T
W
T
F
S
26
59°
43°
27
63°
45°
28
64°
52°
29
48°
39°
30
52°
34°
1
46°
32°
2
57°
32°
3
70°
52°
4
81°
45°
5
59°
41°
6
54°
34°
7
55°
34°
8
70°
34°
9
68°
41°
10
61°
34°
11
54°
36°
12
77°
34°
13
63°
41°
14
68°
36°
15
81°
54°
16
86°
61°
17
63°
50°
18
84°
59°
19
71°
45°
20
57°
42°
21
55°
44°
22
60°
46°
23
63°
48°
24
68°
49°
25
73°
51°
26
75°
52°
27
74°
53°
28
73°
56°
29
74°
52°
30
75°
54°
31
76°
55°
1
73°
50°
2
76°
54°
3
67°
51°
4
67°
50°
5
71°
56°
6
76°
57°
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 55° to 76°, with overnight lows between 42° and 57°. The average high for May is 70° with an average low of 51°. 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.