S
M
T
W
T
F
S
30
88°
68°
31
89°
64°
1
87°
64°
2
82°
65°
3
84°
67°
4
87°
67°
5
85°
65°
6
86°
68°
7
87°
67°
8
86°
66°
9
87°
66°
10
80°
67°
11
85°
65°
12
85°
61°
13
79°
62°
14
79°
64°
15
80°
63°
16
83°
60°
17
83°
60°
18
80°
57°
19
78°
58°
20
78°
62°
21
76°
57°
22
77°
57°
23
82°
58°
24
81°
61°
25
82°
62°
26
81°
60°
27
81°
56°
28
75°
55°
29
79°
54°
30
Hist. Avg.
77°
55°
1
Hist. Avg.
77°
54°
2
Hist. Avg.
76°
54°
3
Hist. Avg.
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Bloomington
Bloomington's September 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 54° and 68°. The average high for September is 82° with an average low of 62°. 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 Bloomington. See also: October | November | December.
