S
M
T
W
T
F
S
30
66°
56°
31
61°
56°
1
69°
57°
2
70°
66°
3
68°
60°
4
70°
56°
5
72°
58°
6
75°
55°
7
83°
59°
8
88°
64°
9
91°
67°
10
89°
64°
11
79°
58°
12
82°
58°
13
79°
57°
14
77°
56°
15
78°
58°
16
81°
58°
17
83°
59°
18
84°
57°
19
77°
54°
20
80°
58°
21
72°
56°
22
73°
54°
23
75°
55°
24
77°
54°
25
76°
54°
26
72°
56°
27
79°
57°
28
80°
58°
29
80°
59°
30
79°
58°
1
80°
58°
2
79°
57°
3
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pinole
Pinole's September 2026 forecast shows daily high temperatures ranging from 72° to 91°, with overnight lows between 54° and 67°. The average high for September is 80° 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 September weather will actually feel in Pinole. See also: October | November | December.