S
M
T
W
T
F
S
26
65°
44°
27
73°
50°
28
73°
54°
29
66°
53°
30
54°
41°
1
54°
37°
2
49°
39°
3
55°
40°
4
65°
45°
5
71°
49°
6
50°
42°
7
53°
43°
8
54°
43°
9
64°
41°
10
60°
47°
11
54°
44°
12
56°
42°
13
52°
46°
14
54°
46°
15
68°
50°
16
75°
57°
17
68°
48°
18
76°
66°
19
83°
65°
20
72°
46°
21
61°
44°
22
62°
50°
23
68°
55°
24
63°
51°
25
68°
54°
26
67°
55°
27
71°
54°
28
69°
58°
29
65°
54°
30
65°
54°
31
68°
53°
1
64°
52°
2
64°
50°
3
65°
47°
4
65°
48°
5
67°
56°
6
69°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in LaSalle
LaSalle's May 2026 forecast shows daily high temperatures ranging from 61° to 83°, with overnight lows between 44° and 66°. The average high for May is 68° with an average low of 53°. 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 LaSalle. See also: June | July | August.
