S
M
T
W
T
F
S
26
85°
72°
27
93°
75°
28
84°
70°
29
68°
60°
30
65°
59°
1
67°
57°
2
78°
54°
3
84°
63°
4
84°
70°
5
89°
62°
6
72°
51°
7
73°
56°
8
83°
65°
9
84°
66°
10
78°
63°
11
76°
60°
12
81°
63°
13
86°
67°
14
88°
66°
15
87°
67°
16
83°
64°
17
78°
66°
18
78°
67°
19
80°
68°
20
82°
68°
21
84°
61°
22
79°
60°
23
79°
62°
24
80°
64°
25
81°
62°
26
79°
62°
27
80°
63°
28
81°
63°
29
81°
67°
30
80°
69°
31
82°
67°
1
83°
66°
2
84°
65°
3
85°
72°
4
85°
72°
5
83°
70°
6
81°
70°
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 72° to 89°, with overnight lows between 51° and 72°. 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.