S
M
T
W
T
F
S
26
59°
42°
27
68°
47°
28
64°
50°
29
57°
40°
30
56°
37°
1
50°
35°
2
57°
32°
3
68°
45°
4
80°
51°
5
62°
43°
6
56°
41°
7
58°
46°
8
61°
47°
9
72°
52°
10
61°
42°
11
59°
40°
12
62°
46°
13
68°
48°
14
73°
52°
15
70°
51°
16
67°
49°
17
66°
48°
18
71°
50°
19
71°
54°
20
71°
53°
21
69°
44°
22
66°
44°
23
66°
46°
24
67°
45°
25
67°
46°
26
68°
47°
27
67°
47°
28
68°
48°
29
69°
52°
30
70°
57°
31
74°
53°
1
71°
53°
2
75°
58°
3
77°
58°
4
79°
59°
5
80°
60°
6
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Downers Grove
Downers Grove's May 2026 forecast shows daily high temperatures ranging from 56° to 81°, with overnight lows between 40° and 61°. The average high for May is 69° with an average low of 50°. 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 Downers Grove. See also: June | July | August.
