S
M
T
W
T
F
S
30
80°
58°
31
84°
60°
1
84°
60°
2
83°
59°
3
84°
53°
4
77°
51°
5
76°
54°
6
81°
59°
7
82°
58°
8
82°
58°
9
77°
56°
10
76°
57°
11
81°
58°
12
82°
57°
13
81°
57°
14
81°
56°
15
80°
56°
16
81°
55°
17
79°
52°
18
80°
47°
19
72°
46°
20
73°
45°
21
71°
45°
22
71°
46°
23
72°
46°
24
75°
44°
25
71°
48°
26
74°
52°
27
70°
51°
28
75°
51°
29
76°
50°
30
76°
49°
1
73°
48°
2
75°
50°
3
74°
50°
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 70° to 84°, with overnight lows between 44° and 60°. The average high for September is 77° with an average low of 53°. 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.