S
M
T
W
T
F
S
30
98°
75°
31
95°
73°
1
89°
79°
2
97°
78°
3
96°
80°
4
95°
77°
5
95°
74°
6
93°
74°
7
94°
75°
8
94°
74°
9
92°
73°
10
92°
76°
11
96°
74°
12
95°
75°
13
94°
74°
14
91°
73°
15
92°
73°
16
90°
72°
17
93°
73°
18
92°
71°
19
93°
68°
20
90°
73°
21
89°
72°
22
90°
71°
23
88°
72°
24
89°
72°
25
89°
71°
26
88°
71°
27
88°
70°
28
89°
71°
29
87°
71°
30
85°
68°
1
82°
62°
2
79°
62°
3
80°
61°
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 79° to 96°, with overnight lows between 61° and 76°. The average high for September is 90° with an average low of 71°. 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.
