S
M
T
W
T
F
S
26
54°
40°
27
59°
39°
28
64°
29°
29
68°
37°
30
70°
36°
1
70°
37°
2
74°
35°
3
79°
33°
4
67°
43°
5
67°
38°
6
74°
43°
7
82°
37°
8
87°
41°
9
85°
45°
10
87°
45°
11
90°
42°
12
91°
43°
13
82°
61°
14
85°
43°
15
86°
46°
16
84°
58°
17
79°
44°
18
70°
50°
19
76°
54°
20
84°
57°
21
91°
53°
22
90°
53°
23
87°
54°
24
85°
53°
25
88°
54°
26
87°
54°
27
88°
52°
28
88°
53°
29
84°
49°
30
76°
43°
31
77°
46°
1
84°
50°
2
88°
53°
3
89°
55°
4
89°
55°
5
90°
56°
6
90°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Elgin
Elgin's May 2026 forecast shows daily high temperatures ranging from 70° to 91°, with overnight lows between 43° and 58°. The average high for May is 85° with an average low of 52°. 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 Elgin. See also: June | July | August.
