S
M
T
W
T
F
S
30
70°
52°
31
76°
52°
1
77°
48°
2
70°
47°
3
69°
49°
4
73°
55°
5
74°
56°
6
77°
50°
7
71°
50°
8
70°
53°
9
68°
55°
10
69°
54°
11
70°
52°
12
71°
53°
13
71°
52°
14
66°
46°
15
65°
45°
16
65°
43°
17
66°
50°
18
65°
51°
19
69°
53°
20
71°
52°
21
70°
47°
22
65°
42°
23
63°
48°
24
62°
47°
25
66°
42°
26
61°
48°
27
64°
47°
28
Hist. Avg.
67°
46°
29
Hist. Avg.
66°
46°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
65°
46°
2
Hist. Avg.
65°
45°
3
Hist. Avg.
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Brookfield
Brookfield's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 42° and 56°. The average high for September is 69° with an average low of 50°. 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 Brookfield. See also: October | November | December.
