S
M
T
W
T
F
S
30
80°
64°
31
88°
58°
1
86°
52°
2
85°
61°
3
88°
62°
4
N/A
5
82°
64°
6
78°
65°
7
78°
66°
8
83°
57°
9
74°
52°
10
75°
56°
11
78°
56°
12
77°
54°
13
79°
59°
14
74°
54°
15
74°
58°
16
76°
57°
17
70°
48°
18
73°
53°
19
73°
54°
20
74°
53°
21
71°
53°
22
71°
52°
23
72°
53°
24
73°
52°
25
72°
48°
26
62°
43°
27
60°
41°
28
58°
39°
29
65°
40°
30
58°
38°
1
57°
46°
2
58°
46°
3
59°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Siren
Siren's September 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 38° and 66°. The average high for September is 71° with an average low of 52°. 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 Siren. See also: October | November | December.
