S
M
T
W
T
F
S
30
90°
64°
31
92°
68°
1
94°
71°
2
94°
71°
3
94°
70°
4
88°
69°
5
82°
64°
6
83°
59°
7
83°
58°
8
82°
59°
9
84°
63°
10
86°
59°
11
80°
59°
12
78°
58°
13
77°
57°
14
78°
54°
15
79°
52°
16
76°
57°
17
77°
56°
18
73°
56°
19
80°
56°
20
76°
55°
21
77°
56°
22
77°
55°
23
75°
51°
24
71°
53°
25
77°
54°
26
77°
53°
27
74°
48°
28
67°
43°
29
65°
42°
30
66°
44°
1
65°
42°
2
69°
50°
3
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Racine
Racine's September 2026 forecast shows daily high temperatures ranging from 65° to 94°, with overnight lows between 42° and 71°. 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 Racine. See also: October | November | December.