S
M
T
W
T
F
S
30
78°
63°
31
83°
54°
1
77°
51°
2
83°
58°
3
78°
59°
4
85°
53°
5
84°
67°
6
83°
62°
7
78°
63°
8
79°
53°
9
72°
51°
10
82°
55°
11
78°
47°
12
64°
45°
13
57°
49°
14
58°
44°
15
65°
45°
16
66°
46°
17
62°
43°
18
64°
45°
19
66°
45°
20
69°
46°
21
66°
53°
22
72°
53°
23
73°
51°
24
64°
49°
25
67°
50°
26
69°
50°
27
70°
49°
28
71°
49°
29
67°
48°
30
57°
47°
1
57°
44°
2
56°
41°
3
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Streeter
Streeter's September 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 41° and 55°. The average high for September is 66° with an average low of 48°. 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 Streeter. See also: October | November | December.