S
M
T
W
T
F
S
30
83°
66°
31
84°
65°
1
83°
66°
2
83°
66°
3
84°
65°
4
84°
66°
5
83°
65°
6
83°
65°
7
84°
63°
8
80°
60°
9
79°
62°
10
80°
62°
11
82°
61°
12
78°
58°
13
69°
51°
14
67°
51°
15
67°
58°
16
69°
56°
17
68°
52°
18
71°
53°
19
76°
57°
20
76°
58°
21
75°
57°
22
72°
48°
23
76°
46°
24
71°
55°
25
69°
56°
26
70°
48°
27
73°
42°
28
65°
43°
29
66°
52°
30
67°
51°
1
62°
50°
2
61°
55°
3
69°
55°
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 61° to 84°, with overnight lows between 42° and 66°. The average high for September is 75° with an average low of 57°. 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.
