S
M
T
W
T
F
S
30
65°
52°
31
66°
53°
1
67°
53°
2
66°
52°
3
66°
51°
4
64°
51°
5
63°
50°
6
62°
50°
7
60°
47°
8
62°
46°
9
65°
50°
10
66°
51°
11
60°
51°
12
58°
51°
13
63°
52°
14
65°
51°
15
66°
52°
16
65°
51°
17
66°
52°
18
65°
51°
19
63°
48°
20
58°
49°
21
58°
50°
22
62°
48°
23
57°
44°
24
57°
48°
25
60°
45°
26
61°
50°
27
60°
51°
28
61°
49°
29
61°
43°
30
58°
45°
1
58°
47°
2
60°
48°
3
59°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sointula
Sointula's September 2026 forecast shows daily high temperatures ranging from 57° to 67°, with overnight lows between 43° and 53°. The average high for September is 62° with an average low of 49°. 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 Sointula. See also: October | November | December.