S
M
T
W
T
F
S
30
72°
53°
31
72°
60°
1
74°
61°
2
75°
62°
3
76°
56°
4
75°
50°
5
73°
52°
6
70°
50°
7
70°
53°
8
74°
54°
9
75°
59°
10
78°
52°
11
72°
51°
12
69°
57°
13
69°
49°
14
70°
49°
15
66°
55°
16
68°
53°
17
67°
54°
18
71°
47°
19
68°
48°
20
67°
47°
21
71°
46°
22
66°
52°
23
68°
52°
24
73°
55°
25
73°
54°
26
72°
55°
27
71°
55°
28
74°
51°
29
71°
46°
30
66°
53°
1
69°
52°
2
72°
43°
3
69°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Croswell
Croswell's September 2026 forecast shows daily high temperatures ranging from 66° to 78°, with overnight lows between 42° and 62°. The average high for September is 71° with an average low of 52°. 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 Croswell. See also: October | November | December.