S
M
T
W
T
F
S
26
89°
68°
27
84°
69°
28
87°
66°
29
89°
64°
30
91°
72°
1
92°
73°
2
87°
65°
3
79°
64°
4
82°
64°
5
86°
64°
6
92°
66°
7
96°
71°
8
94°
73°
9
95°
72°
10
91°
74°
11
88°
71°
12
85°
68°
13
86°
67°
14
91°
66°
15
92°
66°
16
91°
67°
17
92°
69°
18
91°
69°
19
91°
70°
20
93°
70°
21
92°
69°
22
93°
67°
23
86°
70°
24
87°
69°
25
87°
70°
26
88°
70°
27
87°
69°
28
87°
71°
29
88°
71°
30
86°
70°
31
87°
71°
1
87°
71°
2
89°
72°
3
88°
72°
4
87°
71°
5
87°
72°
6
88°
71°
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 85° to 95°, with overnight lows between 66° and 74°. The average high for May is 89° with an average low of 70°. 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.
