S
M
T
W
T
F
S
30
84°
66°
31
86°
69°
1
86°
64°
2
86°
63°
3
82°
69°
4
89°
71°
5
78°
68°
6
75°
66°
7
77°
64°
8
79°
64°
9
81°
59°
10
77°
54°
11
81°
55°
12
73°
54°
13
69°
49°
14
64°
60°
15
70°
53°
16
66°
57°
17
70°
55°
18
67°
61°
19
69°
57°
20
70°
53°
21
68°
52°
22
70°
54°
23
68°
54°
24
70°
58°
25
74°
57°
26
68°
46°
27
73°
54°
28
70°
52°
29
67°
51°
30
70°
50°
1
69°
50°
2
66°
49°
3
68°
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 64° to 74°, with overnight lows between 46° and 61°. The average high for September is 69° with an average low of 54°. 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.