S
M
T
W
T
F
S
26
88°
53°
27
90°
63°
28
81°
63°
29
84°
64°
30
83°
65°
31
88°
61°
1
89°
62°
2
88°
70°
3
87°
62°
4
85°
57°
5
86°
62°
6
91°
73°
7
92°
69°
8
88°
69°
9
91°
66°
10
87°
64°
11
85°
66°
12
85°
66°
13
87°
67°
14
85°
63°
15
86°
60°
16
78°
59°
17
86°
67°
18
86°
65°
19
86°
62°
20
84°
61°
21
83°
61°
22
79°
64°
23
81°
61°
24
N/A
25
74°
54°
26
79°
58°
27
76°
64°
28
81°
56°
29
76°
57°
30
75°
61°
31
74°
58°
1
71°
56°
2
72°
57°
3
70°
55°
4
73°
54°
5
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Long Valley
Long Valley's August 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 54° and 64°. The average high for August is 74° with an average low of 57°. 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 Long Valley. See also: September | October | November.