S
M
T
W
T
F
S
26
88°
53°
27
86°
65°
28
74°
63°
29
75°
65°
30
79°
64°
31
80°
63°
1
82°
65°
2
83°
64°
3
84°
63°
4
83°
65°
5
86°
64°
6
85°
63°
7
84°
64°
8
83°
65°
9
85°
62°
10
82°
65°
11
83°
65°
12
80°
64°
13
80°
65°
14
83°
64°
15
80°
61°
16
79°
63°
17
79°
63°
18
78°
62°
19
81°
64°
20
80°
63°
21
79°
62°
22
78°
62°
23
79°
63°
24
83°
56°
25
76°
55°
26
76°
62°
27
82°
63°
28
83°
63°
29
83°
62°
30
82°
59°
31
77°
54°
1
74°
54°
2
74°
53°
3
73°
53°
4
74°
56°
5
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mendham
Mendham's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 53° and 65°. The average high for August is 80° with an average low of 62°. 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 Mendham. See also: September | October | November.
