S
M
T
W
T
F
S
26
87°
68°
27
88°
70°
28
80°
62°
29
79°
59°
30
83°
57°
31
79°
63°
1
70°
65°
2
78°
64°
3
82°
60°
4
84°
59°
5
85°
65°
6
80°
68°
7
85°
67°
8
84°
65°
9
87°
67°
10
89°
74°
11
83°
67°
12
78°
68°
13
78°
68°
14
81°
71°
15
88°
73°
16
87°
68°
17
81°
60°
18
82°
63°
19
83°
64°
20
82°
65°
21
84°
64°
22
83°
61°
23
80°
60°
24
78°
59°
25
83°
62°
26
84°
67°
27
86°
67°
28
77°
60°
29
78°
59°
30
81°
63°
31
85°
66°
1
86°
66°
2
86°
65°
3
85°
65°
4
85°
64°
5
83°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bourbonnais
Bourbonnais's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 59° and 73°. The average high for August is 83° with an average low of 64°. 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 Bourbonnais. See also: September | October | November.
