S
M
T
W
T
F
S
26
67°
56°
27
67°
58°
28
71°
55°
29
71°
56°
30
70°
59°
1
71°
59°
2
67°
59°
3
66°
60°
4
68°
59°
5
68°
58°
6
70°
57°
7
70°
59°
8
70°
60°
9
72°
59°
10
72°
60°
11
70°
58°
12
69°
57°
13
70°
61°
14
70°
60°
15
69°
61°
16
71°
62°
17
70°
60°
18
73°
61°
19
77°
60°
20
81°
63°
21
74°
61°
22
72°
60°
23
72°
60°
24
70°
60°
25
69°
61°
26
71°
60°
27
69°
60°
28
71°
60°
29
72°
62°
30
71°
61°
31
73°
62°
1
73°
61°
2
72°
62°
3
73°
63°
4
72°
60°
5
71°
62°
6
75°
62°
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 69° to 75°, with overnight lows between 60° and 63°. The average high for May is 72° with an average low of 61°. 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.
