S
M
T
W
T
F
S
26
97°
72°
27
97°
74°
28
99°
72°
29
96°
68°
30
100°
68°
31
101°
74°
1
97°
68°
2
100°
71°
3
106°
72°
4
101°
67°
5
100°
68°
6
99°
65°
7
97°
64°
8
96°
65°
9
95°
64°
10
97°
64°
11
95°
63°
12
91°
63°
13
93°
62°
14
92°
58°
15
89°
60°
16
91°
63°
17
87°
58°
18
89°
59°
19
89°
57°
20
90°
58°
21
92°
61°
22
93°
60°
23
93°
58°
24
92°
61°
25
93°
61°
26
94°
60°
27
93°
60°
28
93°
61°
29
92°
61°
30
93°
60°
31
93°
60°
1
92°
59°
2
92°
59°
3
88°
57°
4
84°
58°
5
83°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in North Valley
North Valley's August 2026 forecast shows daily high temperatures ranging from 83° to 106°, with overnight lows between 57° and 72°. The average high for August is 93° 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 North Valley. See also: September | October | November.