S
M
T
W
T
F
S
26
63°
44°
27
66°
40°
28
73°
37°
29
75°
38°
30
73°
47°
1
79°
45°
2
80°
53°
3
67°
54°
4
68°
50°
5
65°
47°
6
74°
39°
7
80°
42°
8
85°
49°
9
86°
47°
10
84°
48°
11
92°
43°
12
63°
49°
13
77°
48°
14
76°
52°
15
76°
56°
16
74°
56°
17
71°
49°
18
75°
47°
19
84°
39°
20
88°
42°
21
82°
43°
22
77°
51°
23
78°
54°
24
74°
54°
25
74°
54°
26
70°
53°
27
65°
53°
28
67°
50°
29
74°
54°
30
75°
53°
31
84°
52°
1
85°
56°
2
86°
55°
3
81°
56°
4
83°
57°
5
82°
55°
6
81°
47°
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 65° to 86°, with overnight lows between 47° and 57°. The average high for May is 77° with an average low of 54°. 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.
