S
M
T
W
T
F
S
30
82°
58°
31
85°
58°
1
76°
57°
2
75°
56°
3
74°
55°
4
73°
54°
5
74°
56°
6
83°
55°
7
72°
43°
8
72°
42°
9
70°
43°
10
69°
42°
11
75°
49°
12
74°
40°
13
75°
42°
14
71°
45°
15
75°
49°
16
80°
51°
17
81°
52°
18
82°
52°
19
82°
53°
20
81°
52°
21
82°
53°
22
83°
52°
23
81°
50°
24
80°
41°
25
76°
36°
26
64°
37°
27
63°
44°
28
65°
43°
29
67°
46°
30
71°
43°
1
74°
45°
2
73°
46°
3
74°
44°
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 63° to 85°, with overnight lows between 36° and 58°. The average high for September is 75° 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 Circle. See also: October | November | December.