S
M
T
W
T
F
S
30
88°
67°
31
87°
67°
1
86°
66°
2
86°
67°
3
85°
66°
4
86°
66°
5
87°
66°
6
86°
67°
7
86°
62°
8
84°
60°
9
Hist. Avg.
80°
65°
10
Hist. Avg.
80°
65°
11
Hist. Avg.
80°
65°
12
Hist. Avg.
80°
64°
13
Hist. Avg.
80°
64°
14
Hist. Avg.
79°
64°
15
Hist. Avg.
79°
64°
16
Hist. Avg.
79°
63°
17
Hist. Avg.
78°
63°
18
Hist. Avg.
78°
62°
19
Hist. Avg.
78°
62°
20
Hist. Avg.
78°
62°
21
Hist. Avg.
77°
62°
22
Hist. Avg.
77°
61°
23
Hist. Avg.
77°
61°
24
Hist. Avg.
76°
60°
25
Hist. Avg.
76°
60°
26
Hist. Avg.
76°
60°
27
Hist. Avg.
76°
59°
28
Hist. Avg.
75°
59°
29
Hist. Avg.
75°
58°
30
Hist. Avg.
74°
58°
1
Hist. Avg.
74°
58°
2
Hist. Avg.
74°
57°
3
Hist. Avg.
74°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Stockton
Stockton's September 2026 forecast shows daily high temperatures ranging from 84° to 88°, with overnight lows between 60° and 67°. The average high for September is 86° 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 September weather will actually feel in Stockton. See also: October | November | December.
