S
M
T
W
T
F
S
26
64°
52°
27
66°
45°
28
72°
39°
29
75°
50°
30
72°
54°
1
57°
54°
2
55°
54°
3
66°
44°
4
79°
45°
5
79°
54°
6
82°
59°
7
72°
54°
8
72°
50°
9
76°
51°
10
85°
59°
11
75°
50°
12
72°
45°
13
79°
46°
14
77°
54°
15
73°
46°
16
84°
50°
17
90°
60°
18
93°
70°
19
91°
66°
20
91°
64°
21
88°
64°
22
68°
64°
23
72°
63°
24
83°
70°
25
82°
72°
26
84°
71°
27
85°
69°
28
86°
65°
29
83°
66°
30
73°
61°
31
73°
57°
1
78°
59°
2
82°
63°
3
82°
63°
4
83°
64°
5
86°
67°
6
83°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in La Grange
La Grange's May 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 57° and 74°. The average high for May is 82° 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 La Grange. See also: June | July | August.