S
M
T
W
T
F
S
26
89°
65°
27
91°
65°
28
93°
66°
29
94°
67°
30
94°
67°
31
93°
66°
1
92°
66°
2
92°
65°
3
93°
65°
4
93°
66°
5
94°
66°
6
93°
65°
7
89°
64°
8
89°
66°
9
93°
64°
10
94°
65°
11
95°
64°
12
94°
62°
13
93°
60°
14
91°
60°
15
90°
66°
16
92°
66°
17
95°
67°
18
97°
66°
19
97°
65°
20
96°
63°
21
96°
61°
22
94°
62°
23
92°
61°
24
91°
62°
25
91°
64°
26
93°
66°
27
95°
66°
28
95°
65°
29
96°
64°
30
95°
63°
31
94°
65°
1
93°
66°
2
95°
67°
3
93°
66°
4
94°
66°
5
93°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Montclair
Montclair's August 2026 forecast shows daily high temperatures ranging from 89° to 97°, with overnight lows between 60° and 67°. The average high for August is 93° with an average low of 65°. 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 Montclair. See also: September | October | November.
