S
M
T
W
T
F
S
30
81°
69°
31
91°
72°
1
94°
77°
2
96°
78°
3
92°
79°
4
93°
78°
5
83°
73°
6
79°
71°
7
80°
66°
8
85°
72°
9
81°
67°
10
79°
60°
11
81°
64°
12
84°
63°
13
79°
66°
14
82°
66°
15
73°
56°
16
70°
57°
17
73°
56°
18
69°
53°
19
69°
51°
20
68°
54°
21
72°
52°
22
68°
58°
23
70°
57°
24
76°
58°
25
76°
58°
26
75°
57°
27
75°
58°
28
77°
58°
29
76°
59°
30
76°
58°
1
73°
52°
2
69°
46°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brookfield
Brookfield's September 2026 forecast shows daily high temperatures ranging from 62° to 85°, with overnight lows between 43° and 72°. The average high for September is 75° with an average low of 58°. 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.
