S
M
T
W
T
F
S
26
98°
77°
27
98°
77°
28
93°
77°
29
88°
73°
30
86°
68°
31
85°
64°
1
82°
64°
2
87°
65°
3
87°
65°
4
92°
65°
5
80°
71°
6
78°
69°
7
88°
66°
8
88°
67°
9
89°
73°
10
91°
78°
11
92°
75°
12
89°
75°
13
90°
75°
14
86°
75°
15
89°
76°
16
88°
64°
17
83°
64°
18
87°
67°
19
82°
64°
20
81°
62°
21
81°
65°
22
82°
61°
23
81°
63°
24
80°
64°
25
85°
66°
26
81°
64°
27
83°
63°
28
85°
63°
29
83°
62°
30
88°
67°
31
86°
67°
1
81°
66°
2
78°
62°
3
76°
57°
4
76°
59°
5
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mendon
Mendon's August 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 57° and 67°. The average high for August is 82° with an average low of 63°. 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 Mendon. See also: September | October | November.