S
M
T
W
T
F
S
30
72°
45°
31
81°
44°
1
87°
41°
2
90°
56°
3
85°
55°
4
96°
54°
5
87°
60°
6
84°
64°
7
78°
58°
8
71°
56°
9
78°
45°
10
88°
44°
11
67°
43°
12
64°
40°
13
76°
36°
14
63°
51°
15
65°
44°
16
69°
42°
17
75°
38°
18
82°
56°
19
72°
56°
20
62°
54°
21
68°
51°
22
76°
48°
23
74°
52°
24
87°
46°
25
82°
53°
26
72°
42°
27
65°
38°
28
70°
38°
29
76°
33°
30
63°
40°
1
66°
29°
2
74°
37°
3
68°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Circle
Circle's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Circle. See also: October | November | December.