S
M
T
W
T
F
S
26
91°
77°
27
93°
73°
28
92°
72°
29
92°
73°
30
94°
74°
31
92°
72°
1
93°
73°
2
94°
73°
3
93°
75°
4
93°
73°
5
92°
72°
6
90°
72°
7
90°
73°
8
91°
72°
9
91°
72°
10
92°
74°
11
92°
75°
12
91°
74°
13
93°
73°
14
94°
72°
15
95°
72°
16
95°
74°
17
94°
76°
18
94°
75°
19
95°
76°
20
96°
72°
21
91°
74°
22
92°
74°
23
94°
75°
24
94°
76°
25
93°
76°
26
94°
75°
27
94°
74°
28
93°
72°
29
94°
72°
30
94°
74°
31
93°
74°
1
94°
73°
2
94°
73°
3
93°
72°
4
92°
72°
5
91°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arcola
Arcola's August 2026 forecast shows daily high temperatures ranging from 90° to 96°, with overnight lows between 72° and 77°. The average high for August is 93° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Arcola. See also: September | October | November.