S
M
T
W
T
F
S
26
85°
72°
27
93°
75°
28
84°
70°
29
65°
60°
30
63°
55°
1
58°
52°
2
73°
56°
3
79°
60°
4
79°
66°
5
83°
67°
6
81°
56°
7
76°
57°
8
74°
57°
9
79°
62°
10
83°
65°
11
81°
63°
12
82°
62°
13
84°
68°
14
83°
67°
15
86°
68°
16
86°
68°
17
85°
67°
18
85°
69°
19
86°
69°
20
87°
68°
21
82°
69°
22
80°
66°
23
80°
67°
24
86°
70°
25
83°
67°
26
81°
63°
27
80°
63°
28
82°
68°
29
84°
69°
30
87°
70°
31
88°
71°
1
90°
70°
2
90°
72°
3
91°
73°
4
91°
72°
5
90°
71°
6
88°
68°
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 58° to 91°, with overnight lows between 52° and 73°. The average high for May is 82° 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.