S
M
T
W
T
F
S
30
81°
67°
31
91°
70°
1
93°
71°
2
94°
72°
3
91°
71°
4
91°
72°
5
86°
68°
6
83°
65°
7
79°
63°
8
78°
60°
9
79°
61°
10
78°
62°
11
75°
56°
12
75°
55°
13
76°
57°
14
77°
55°
15
79°
59°
16
80°
60°
17
79°
60°
18
78°
59°
19
79°
60°
20
80°
60°
21
80°
59°
22
79°
59°
23
79°
58°
24
78°
59°
25
79°
59°
26
79°
57°
27
78°
58°
28
77°
58°
29
76°
57°
30
76°
56°
1
75°
56°
2
76°
55°
3
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bolingbrook
Bolingbrook's September 2026 forecast shows daily high temperatures ranging from 75° to 94°, with overnight lows between 55° and 72°. The average high for September is 80° with an average low of 60°. 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 Bolingbrook. See also: October | November | December.
