S
M
T
W
T
F
S
26
58°
37°
27
58°
38°
28
60°
46°
29
68°
48°
30
69°
48°
1
67°
45°
2
60°
43°
3
59°
42°
4
61°
39°
5
61°
48°
6
64°
49°
7
72°
50°
8
72°
48°
9
62°
46°
10
63°
50°
11
63°
49°
12
68°
50°
13
71°
51°
14
74°
51°
15
75°
54°
16
75°
53°
17
73°
51°
18
66°
49°
19
66°
49°
20
71°
54°
21
72°
55°
22
71°
47°
23
71°
47°
24
73°
48°
25
74°
49°
26
76°
50°
27
79°
51°
28
79°
53°
29
80°
53°
30
81°
52°
31
78°
53°
1
79°
57°
2
81°
52°
3
75°
59°
4
82°
60°
5
83°
60°
6
83°
61°
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 58° to 83°, with overnight lows between 37° and 61°. The average high for May is 71° with an average low of 50°. 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.
