S
M
T
W
T
F
S
30
93°
62°
31
92°
57°
1
92°
54°
2
83°
54°
3
84°
61°
4
91°
63°
5
92°
60°
6
93°
61°
7
91°
57°
8
86°
56°
9
90°
53°
10
82°
51°
11
81°
53°
12
83°
56°
13
87°
57°
14
86°
59°
15
88°
57°
16
86°
47°
17
83°
46°
18
77°
45°
19
75°
47°
20
76°
47°
21
77°
54°
22
83°
57°
23
84°
56°
24
85°
45°
25
84°
44°
26
75°
45°
27
72°
43°
28
73°
44°
29
73°
44°
30
74°
53°
1
84°
46°
2
Hist. Avg.
75°
43°
3
Hist. Avg.
74°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stockton
Stockton's September 2026 forecast shows daily high temperatures ranging from 72° to 93°, with overnight lows between 43° and 63°. The average high for September is 83° with an average low of 53°. 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.
