S
M
T
W
T
F
S
30
89°
61°
31
91°
69°
1
94°
71°
2
94°
70°
3
95°
70°
4
95°
70°
5
93°
72°
6
84°
68°
7
83°
58°
8
88°
60°
9
91°
72°
10
76°
69°
11
81°
67°
12
83°
68°
13
84°
64°
14
78°
57°
15
93°
63°
16
92°
71°
17
92°
70°
18
89°
70°
19
90°
68°
20
87°
68°
21
71°
58°
22
63°
58°
23
65°
59°
24
67°
60°
25
72°
53°
26
74°
49°
27
75°
42°
28
77°
45°
29
79°
47°
30
84°
55°
1
88°
65°
2
70°
50°
3
71°
45°
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 70° to 88°, with overnight lows between 45° and 65°. The average high for September is 76° with an average low of 53°. 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.
