S
M
T
W
T
F
S
26
82°
66°
27
86°
63°
28
85°
68°
29
85°
65°
30
77°
66°
1
66°
55°
2
73°
51°
3
75°
42°
4
80°
49°
5
80°
63°
6
83°
70°
7
79°
57°
8
74°
54°
9
80°
60°
10
82°
64°
11
80°
60°
12
84°
62°
13
82°
59°
14
85°
63°
15
87°
63°
16
85°
62°
17
82°
64°
18
81°
66°
19
80°
66°
20
81°
65°
21
82°
64°
22
85°
61°
23
81°
61°
24
81°
62°
25
82°
64°
26
82°
62°
27
83°
62°
28
83°
63°
29
84°
68°
30
85°
68°
31
84°
69°
1
84°
69°
2
85°
68°
3
85°
69°
4
86°
70°
5
85°
70°
6
85°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wilmer
Wilmer's May 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 42° and 70°. The average high for May is 82° with an average low of 63°. 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 Wilmer. See also: June | July | August.