S
M
T
W
T
F
S
26
59°
42°
27
68°
47°
28
64°
50°
29
57°
40°
30
56°
37°
1
50°
35°
2
57°
32°
3
68°
45°
4
80°
51°
5
61°
46°
6
58°
41°
7
60°
37°
8
67°
38°
9
75°
48°
10
65°
40°
11
56°
42°
12
72°
41°
13
59°
45°
14
67°
42°
15
75°
53°
16
84°
63°
17
87°
66°
18
79°
66°
19
79°
59°
20
59°
48°
21
58°
47°
22
66°
52°
23
72°
54°
24
77°
57°
25
85°
61°
26
85°
65°
27
88°
57°
28
74°
54°
29
78°
56°
30
72°
51°
31
74°
53°
1
76°
55°
2
77°
57°
3
80°
58°
4
81°
59°
5
80°
60°
6
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Westmont
Westmont's May 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 51° and 65°. The average high for May is 79° with an average low of 57°. 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 Westmont. See also: June | July | August.
