S
M
T
W
T
F
S
30
70°
58°
31
72°
59°
1
72°
59°
2
71°
58°
3
71°
59°
4
72°
56°
5
72°
50°
6
70°
58°
7
71°
51°
8
66°
59°
9
70°
57°
10
62°
51°
11
62°
48°
12
60°
48°
13
62°
51°
14
67°
51°
15
60°
46°
16
59°
46°
17
60°
53°
18
58°
49°
19
59°
56°
20
67°
51°
21
66°
47°
22
58°
45°
23
57°
45°
24
59°
50°
25
62°
54°
26
64°
54°
27
65°
53°
28
66°
52°
29
65°
44°
30
56°
44°
1
59°
49°
2
59°
43°
3
55°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Steveston
Steveston's September 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 42° and 59°. The average high for September is 64° with an average low of 51°. 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 Steveston. See also: October | November | December.
