S
M
T
W
T
F
S
30
93°
62°
31
94°
63°
1
94°
62°
2
93°
63°
3
93°
63°
4
92°
62°
5
92°
61°
6
91°
53°
7
82°
52°
8
82°
57°
9
81°
58°
10
80°
59°
11
83°
60°
12
89°
60°
13
90°
48°
14
89°
47°
15
79°
47°
16
76°
48°
17
77°
51°
18
82°
52°
19
82°
46°
20
77°
47°
21
77°
54°
22
80°
54°
23
85°
55°
24
85°
56°
25
84°
55°
26
85°
55°
27
86°
54°
28
82°
50°
29
80°
49°
30
79°
50°
1
78°
48°
2
81°
51°
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 76° to 94°, with overnight lows between 46° and 63°. The average high for September is 85° with an average low of 54°. 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.
