S
M
T
W
T
F
S
30
78°
50°
31
72°
47°
1
69°
47°
2
69°
48°
3
70°
47°
4
68°
48°
5
68°
47°
6
69°
47°
7
68°
49°
8
70°
52°
9
67°
48°
10
66°
47°
11
67°
48°
12
67°
46°
13
66°
49°
14
67°
50°
15
65°
46°
16
65°
45°
17
63°
44°
18
64°
45°
19
63°
51°
20
70°
50°
21
63°
42°
22
62°
42°
23
Hist. Avg.
69°
48°
24
Hist. Avg.
69°
48°
25
Hist. Avg.
68°
48°
26
Hist. Avg.
68°
47°
27
Hist. Avg.
67°
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 62° to 78°, with overnight lows between 42° and 52°. The average high for September is 67° with an average low of 47°. 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.
