S
M
T
W
T
F
S
30
73°
68°
31
86°
70°
1
87°
71°
2
88°
66°
3
82°
62°
4
80°
59°
5
79°
57°
6
78°
60°
7
83°
61°
8
82°
60°
9
76°
54°
10
75°
55°
11
76°
52°
12
78°
57°
13
78°
58°
14
76°
56°
15
77°
57°
16
77°
56°
17
76°
55°
18
72°
55°
19
77°
56°
20
77°
57°
21
76°
57°
22
77°
56°
23
77°
55°
24
76°
55°
25
75°
54°
26
76°
53°
27
75°
54°
28
75°
53°
29
74°
51°
30
72°
51°
1
71°
50°
2
72°
52°
3
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Flint
Flint's September 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 50° and 71°. The average high for September is 77° with an average low of 57°. 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 Flint. See also: October | November | December.
