S
M
T
W
T
F
S
30
75°
64°
31
77°
69°
1
90°
70°
2
92°
73°
3
79°
64°
4
79°
64°
5
79°
56°
6
78°
54°
7
79°
49°
8
81°
55°
9
77°
68°
10
78°
57°
11
76°
47°
12
83°
58°
13
78°
48°
14
68°
43°
15
74°
60°
16
70°
61°
17
65°
58°
18
71°
55°
19
61°
56°
20
68°
53°
21
63°
46°
22
64°
49°
23
60°
51°
24
67°
52°
25
66°
51°
26
67°
50°
27
68°
50°
28
68°
53°
29
71°
52°
30
70°
50°
1
71°
45°
2
64°
50°
3
61°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Swartz Creek
Swartz Creek's September 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 45° and 56°. The average high for September is 66° with an average low of 51°. 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 Swartz Creek. See also: October | November | December.
