S
M
T
W
T
F
S
26
86°
64°
27
86°
65°
28
85°
65°
29
85°
64°
30
84°
65°
1
82°
65°
2
81°
64°
3
80°
65°
4
80°
66°
5
81°
65°
6
80°
66°
7
82°
66°
8
79°
67°
9
80°
67°
10
80°
66°
11
83°
66°
12
86°
67°
13
85°
66°
14
85°
68°
15
86°
68°
16
84°
66°
17
83°
66°
18
89°
64°
19
90°
68°
20
91°
66°
21
90°
67°
22
89°
66°
23
88°
65°
24
89°
69°
25
88°
68°
26
89°
68°
27
91°
66°
28
91°
68°
29
90°
68°
30
91°
65°
31
92°
66°
1
92°
68°
2
91°
67°
3
93°
69°
4
92°
69°
5
93°
70°
6
93°
68°
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 79° to 93°, with overnight lows between 64° and 70°. The average high for May is 87° with an average low of 66°. 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.
