S
M
T
W
T
F
S
30
87°
69°
31
93°
71°
1
90°
65°
2
89°
66°
3
90°
74°
4
87°
68°
5
87°
67°
6
81°
69°
7
85°
69°
8
83°
66°
9
81°
64°
10
81°
58°
11
86°
62°
12
76°
58°
13
72°
54°
14
61°
52°
15
72°
56°
16
75°
51°
17
73°
58°
18
63°
59°
19
62°
54°
20
69°
52°
21
64°
49°
22
64°
46°
23
66°
49°
24
68°
52°
25
70°
54°
26
69°
54°
27
68°
52°
28
70°
53°
29
70°
51°
30
69°
52°
1
70°
53°
2
66°
48°
3
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bloomington
Bloomington's September 2026 forecast shows daily high temperatures ranging from 62° to 70°, with overnight lows between 46° and 54°. The average high for September is 67° with an average low of 51°. 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.
