S
M
T
W
T
F
S
30
74°
52°
31
74°
59°
1
75°
60°
2
78°
61°
3
77°
53°
4
76°
50°
5
73°
51°
6
71°
49°
7
72°
54°
8
75°
52°
9
76°
58°
10
79°
50°
11
73°
49°
12
70°
56°
13
70°
48°
14
71°
48°
15
67°
53°
16
70°
51°
17
69°
52°
18
72°
45°
19
68°
46°
20
68°
45°
21
71°
45°
22
67°
49°
23
68°
51°
24
74°
54°
25
74°
52°
26
73°
53°
27
73°
53°
28
75°
49°
29
71°
45°
30
67°
52°
1
71°
50°
2
73°
41°
3
70°
40°
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 67° to 79°, with overnight lows between 40° and 61°. The average high for September is 72° 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.
