S
M
T
W
T
F
S
26
63°
34°
27
73°
36°
28
72°
46°
29
71°
50°
30
52°
41°
1
55°
36°
2
52°
36°
3
49°
36°
4
69°
44°
5
78°
55°
6
55°
42°
7
58°
34°
8
53°
32°
9
54°
31°
10
65°
38°
11
56°
31°
12
56°
31°
13
58°
40°
14
57°
47°
15
63°
48°
16
73°
49°
17
79°
52°
18
87°
47°
19
87°
71°
20
80°
56°
21
59°
40°
22
65°
32°
23
68°
50°
24
55°
50°
25
72°
50°
26
82°
58°
27
78°
51°
28
64°
48°
29
63°
46°
30
64°
46°
31
65°
49°
1
66°
53°
2
68°
52°
3
70°
53°
4
74°
55°
5
71°
52°
6
72°
49°
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 82°, with overnight lows between 46° and 58°. The average high for May is 69° 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.