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°
61°
3
85°
63°
4
88°
66°
5
80°
64°
6
81°
64°
7
85°
67°
8
88°
71°
9
93°
70°
10
94°
73°
11
93°
71°
12
89°
68°
13
86°
68°
14
87°
66°
15
86°
67°
16
87°
70°
17
91°
72°
18
91°
72°
19
90°
71°
20
90°
71°
21
89°
70°
22
91°
71°
23
90°
70°
24
89°
70°
25
89°
69°
26
88°
68°
27
88°
68°
28
89°
67°
29
89°
67°
30
88°
68°
31
88°
68°
1
89°
67°
2
89°
68°
3
88°
68°
4
88°
66°
5
87°
67°
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 80° to 94°, with overnight lows between 61° and 73°. The average high for August is 88° with an average low of 68°. 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.