S
M
T
W
T
F
S
30
79°
61°
31
82°
58°
1
77°
54°
2
77°
54°
3
76°
53°
4
76°
52°
5
77°
54°
6
77°
58°
7
78°
55°
8
77°
56°
9
76°
52°
10
76°
53°
11
80°
59°
12
81°
58°
13
81°
58°
14
80°
57°
15
81°
57°
16
80°
56°
17
79°
58°
18
80°
57°
19
79°
56°
20
77°
54°
21
79°
48°
22
73°
47°
23
Hist. Avg.
76°
50°
24
Hist. Avg.
75°
50°
25
Hist. Avg.
75°
50°
26
Hist. Avg.
74°
49°
27
Hist. Avg.
74°
49°
28
Hist. Avg.
74°
49°
29
Hist. Avg.
73°
48°
30
Hist. Avg.
73°
48°
1
Hist. Avg.
72°
48°
2
Hist. Avg.
72°
47°
3
Hist. Avg.
72°
47°
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 73° to 82°, with overnight lows between 47° and 61°. The average high for September is 78° with an average low of 55°. 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.
