S
M
T
W
T
F
S
26
75°
45°
27
74°
52°
28
63°
47°
29
60°
39°
30
58°
36°
1
55°
33°
2
60°
32°
3
75°
46°
4
83°
46°
5
59°
42°
6
58°
35°
7
67°
32°
8
72°
42°
9
77°
46°
10
70°
36°
11
68°
41°
12
82°
49°
13
71°
46°
14
76°
39°
15
84°
57°
16
84°
62°
17
86°
65°
18
76°
64°
19
71°
48°
20
66°
44°
21
70°
46°
22
69°
52°
23
79°
59°
24
83°
58°
25
87°
56°
26
88°
55°
27
90°
56°
28
85°
55°
29
84°
62°
30
81°
58°
31
78°
58°
1
85°
58°
2
85°
53°
3
86°
62°
4
85°
62°
5
81°
61°
6
85°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Long Grove
Long Grove's May 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 53° and 63°. The average high for May is 84° with an average low of 59°. 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 Long Grove. See also: June | July | August.
