S
M
T
W
T
F
S
26
73°
57°
27
73°
52°
28
65°
52°
29
80°
59°
30
76°
59°
1
65°
55°
2
63°
45°
3
70°
40°
4
80°
47°
5
81°
56°
6
79°
61°
7
79°
55°
8
71°
50°
9
74°
55°
10
83°
57°
11
71°
52°
12
73°
47°
13
79°
46°
14
74°
50°
15
76°
45°
16
83°
54°
17
88°
66°
18
90°
69°
19
93°
66°
20
94°
68°
21
90°
65°
22
77°
65°
23
79°
66°
24
83°
68°
25
82°
68°
26
83°
67°
27
84°
68°
28
82°
67°
29
80°
64°
30
79°
63°
31
82°
65°
1
84°
62°
2
87°
67°
3
87°
66°
4
81°
66°
5
82°
65°
6
85°
67°
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 77° to 94°, with overnight lows between 62° and 68°. The average high for May is 84° with an average low of 66°. 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.
