S
M
T
W
T
F
S
26
74°
43°
27
71°
57°
28
64°
50°
29
61°
39°
30
63°
39°
1
55°
38°
2
58°
43°
3
68°
46°
4
74°
50°
5
59°
39°
6
56°
39°
7
57°
38°
8
64°
47°
9
67°
46°
10
69°
49°
11
66°
50°
12
69°
48°
13
67°
47°
14
70°
48°
15
66°
48°
16
66°
46°
17
67°
55°
18
75°
55°
19
69°
54°
20
74°
56°
21
75°
56°
22
74°
55°
23
74°
50°
24
68°
50°
25
69°
53°
26
71°
57°
27
72°
55°
28
70°
53°
29
70°
50°
30
73°
51°
31
72°
50°
1
72°
58°
2
81°
58°
3
73°
54°
4
72°
52°
5
72°
52°
6
73°
53°
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 55° to 81°, with overnight lows between 38° and 58°. 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 LaSalle. See also: June | July | August.
