S
M
T
W
T
F
S
26
76°
58°
27
81°
63°
28
80°
63°
29
81°
62°
30
81°
62°
31
75°
61°
1
77°
61°
2
76°
62°
3
75°
60°
4
75°
59°
5
77°
60°
6
76°
61°
7
76°
60°
8
75°
59°
9
75°
61°
10
74°
61°
11
75°
60°
12
74°
59°
13
73°
56°
14
74°
56°
15
74°
58°
16
75°
55°
17
73°
56°
18
74°
56°
19
74°
57°
20
78°
59°
21
80°
54°
22
76°
52°
23
73°
51°
24
72°
53°
25
73°
55°
26
74°
58°
27
79°
56°
28
72°
59°
29
74°
58°
30
80°
51°
31
72°
50°
1
71°
51°
2
71°
56°
3
72°
51°
4
73°
58°
5
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Montvale
Montvale's August 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 50° and 63°. The average high for August is 75° with an average low of 58°. 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 Montvale. See also: September | October | November.