S
M
T
W
T
F
S
26
71°
43°
27
72°
54°
28
62°
49°
29
55°
39°
30
61°
38°
1
51°
37°
2
57°
33°
3
72°
44°
4
82°
45°
5
57°
44°
6
55°
37°
7
64°
33°
8
71°
43°
9
74°
52°
10
65°
41°
11
66°
42°
12
73°
42°
13
64°
47°
14
75°
39°
15
82°
57°
16
85°
64°
17
83°
65°
18
80°
69°
19
75°
53°
20
68°
47°
21
70°
47°
22
73°
52°
23
82°
57°
24
80°
61°
25
87°
55°
26
88°
60°
27
89°
56°
28
83°
48°
29
84°
57°
30
83°
52°
31
80°
53°
1
81°
50°
2
86°
51°
3
85°
57°
4
84°
56°
5
78°
59°
6
82°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mount Morris
Mount Morris's May 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 48° and 59°. The average high for May is 83° 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 Mount Morris. See also: June | July | August.
