S
M
T
W
T
F
S
26
66°
41°
27
70°
41°
28
62°
49°
29
54°
41°
30
53°
39°
1
48°
37°
2
50°
31°
3
64°
36°
4
76°
47°
5
65°
46°
6
53°
38°
7
55°
34°
8
64°
33°
9
68°
37°
10
58°
32°
11
57°
36°
12
62°
31°
13
61°
43°
14
65°
43°
15
70°
37°
16
82°
53°
17
85°
61°
18
89°
67°
19
82°
49°
20
64°
40°
21
62°
42°
22
64°
52°
23
70°
52°
24
72°
54°
25
73°
53°
26
76°
55°
27
77°
53°
28
76°
51°
29
76°
52°
30
77°
53°
31
78°
50°
1
74°
55°
2
78°
55°
3
72°
54°
4
70°
53°
5
72°
53°
6
75°
57°
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 62° to 89°, with overnight lows between 40° and 67°. The average high for May is 74° with an average low of 53°. 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.
