S
M
T
W
T
F
S
30
89°
61°
31
91°
69°
1
94°
71°
2
94°
70°
3
96°
72°
4
97°
72°
5
92°
68°
6
82°
58°
7
84°
63°
8
90°
71°
9
93°
72°
10
86°
66°
11
85°
64°
12
89°
67°
13
84°
63°
14
86°
64°
15
82°
60°
16
83°
56°
17
81°
60°
18
74°
60°
19
73°
61°
20
75°
60°
21
78°
60°
22
80°
58°
23
76°
55°
24
73°
57°
25
79°
59°
26
75°
52°
27
68°
48°
28
68°
46°
29
67°
46°
30
68°
48°
1
67°
46°
2
68°
53°
3
69°
54°
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 67° to 97°, with overnight lows between 46° and 72°. The average high for September is 80° with an average low of 59°. 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.
