S
M
T
W
T
F
S
30
98°
65°
31
99°
71°
1
100°
72°
2
100°
73°
3
99°
73°
4
99°
73°
5
102°
72°
6
100°
73°
7
101°
70°
8
100°
74°
9
95°
72°
10
98°
72°
11
93°
72°
12
94°
71°
13
97°
70°
14
94°
70°
15
97°
72°
16
97°
70°
17
99°
69°
18
85°
63°
19
88°
68°
20
89°
67°
21
91°
69°
22
90°
68°
23
90°
67°
24
89°
67°
25
90°
66°
26
89°
67°
27
88°
66°
28
88°
66°
29
87°
65°
30
87°
66°
1
84°
59°
2
78°
56°
3
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Arcola
Arcola's September 2026 forecast shows daily high temperatures ranging from 76° to 101°, with overnight lows between 54° and 74°. The average high for September is 91° with an average low of 67°. 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.
