S
M
T
W
T
F
S
30
92°
73°
31
89°
74°
1
90°
74°
2
88°
72°
3
89°
72°
4
88°
71°
5
88°
70°
6
89°
70°
7
92°
74°
8
90°
74°
9
92°
72°
10
91°
73°
11
92°
73°
12
93°
72°
13
90°
70°
14
91°
71°
15
89°
71°
16
Hist. Avg.
90°
68°
17
Hist. Avg.
90°
67°
18
Hist. Avg.
90°
67°
19
Hist. Avg.
90°
67°
20
Hist. Avg.
90°
66°
21
Hist. Avg.
89°
66°
22
Hist. Avg.
89°
66°
23
Hist. Avg.
89°
66°
24
Hist. Avg.
89°
65°
25
Hist. Avg.
88°
65°
26
Hist. Avg.
88°
64°
27
Hist. Avg.
88°
64°
28
Hist. Avg.
88°
64°
29
Hist. Avg.
87°
64°
30
Hist. Avg.
87°
63°
1
Hist. Avg.
87°
63°
2
Hist. Avg.
87°
63°
3
Hist. Avg.
86°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Arcola
Arcola's September 2026 forecast shows daily high temperatures ranging from 88° to 93°, with overnight lows between 70° and 74°. The average high for September is 90° with an average low of 72°. 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 Arcola. See also: October | November | December.