S
M
T
W
T
F
S
26
81°
51°
27
83°
61°
28
66°
55°
29
64°
50°
30
67°
40°
1
64°
44°
2
61°
44°
3
78°
41°
4
79°
58°
5
70°
46°
6
63°
43°
7
68°
39°
8
77°
47°
9
81°
56°
10
70°
49°
11
78°
44°
12
83°
51°
13
75°
51°
14
75°
45°
15
84°
58°
16
80°
68°
17
89°
63°
18
80°
65°
19
79°
62°
20
67°
55°
21
69°
53°
22
69°
62°
23
80°
64°
24
81°
62°
25
83°
67°
26
78°
66°
27
79°
67°
28
81°
64°
29
81°
63°
30
77°
59°
31
77°
59°
1
83°
63°
2
82°
64°
3
83°
64°
4
82°
62°
5
83°
65°
6
83°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rosemont
Rosemont's May 2026 forecast shows daily high temperatures ranging from 69° to 83°, with overnight lows between 59° and 67°. The average high for May is 80° with an average low of 64°. 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 Rosemont. See also: June | July | August.
