S
M
T
W
T
F
S
26
86°
67°
27
86°
67°
28
85°
66°
29
87°
67°
30
85°
66°
31
84°
65°
1
79°
62°
2
78°
61°
3
79°
65°
4
80°
65°
5
82°
64°
6
85°
65°
7
85°
66°
8
83°
66°
9
85°
65°
10
85°
65°
11
84°
64°
12
85°
65°
13
85°
66°
14
88°
57°
15
85°
57°
16
81°
59°
17
80°
60°
18
84°
58°
19
86°
56°
20
79°
54°
21
77°
54°
22
77°
55°
23
78°
55°
24
78°
56°
25
79°
59°
26
77°
58°
27
84°
57°
28
84°
54°
29
77°
53°
30
75°
53°
31
75°
54°
1
76°
53°
2
74°
52°
3
75°
52°
4
76°
53°
5
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Morris
Mount Morris's August 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 52° and 67°. The average high for August is 81° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mount Morris. See also: September | October | November.
