S
M
T
W
T
F
S
26
44°
28°
27
46°
29°
28
47°
30°
29
52°
32°
30
51°
32°
1
53°
33°
2
54°
36°
3
59°
37°
4
65°
38°
5
65°
40°
6
53°
33°
7
52°
34°
8
53°
32°
9
53°
35°
10
54°
37°
11
54°
39°
12
55°
34°
13
57°
35°
14
63°
39°
15
57°
34°
16
63°
40°
17
57°
37°
18
56°
35°
19
58°
36°
20
62°
46°
21
68°
46°
22
65°
48°
23
69°
47°
24
65°
41°
25
61°
39°
26
59°
41°
27
61°
46°
28
63°
47°
29
63°
49°
30
64°
46°
31
63°
43°
1
67°
41°
2
65°
46°
3
67°
40°
4
66°
41°
5
65°
42°
6
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in La Salle
La Salle's May 2026 forecast shows daily high temperatures ranging from 44° to 69°, with overnight lows between 28° and 49°. The average high for May is 59° with an average low of 39°. 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 Salle. See also: June | July | August.