S
M
T
W
T
F
S
30
79°
54°
31
81°
65°
1
85°
67°
2
84°
66°
3
84°
65°
4
79°
56°
5
75°
55°
6
74°
56°
7
74°
57°
8
70°
55°
9
74°
56°
10
74°
54°
11
75°
51°
12
72°
50°
13
74°
50°
14
74°
54°
15
73°
54°
16
71°
54°
17
72°
48°
18
67°
44°
19
70°
48°
20
75°
53°
21
75°
53°
22
76°
52°
23
76°
52°
24
75°
51°
25
74°
50°
26
73°
49°
27
74°
50°
28
74°
50°
29
73°
48°
30
69°
44°
1
67°
45°
2
70°
48°
3
71°
48°
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 85°, with overnight lows between 44° and 67°. The average high for September is 74° 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.
