S
M
T
W
T
F
S
30
94°
69°
31
94°
72°
1
95°
73°
2
94°
72°
3
88°
72°
4
89°
71°
5
91°
72°
6
92°
72°
7
93°
71°
8
93°
72°
9
92°
72°
10
92°
71°
11
91°
71°
12
91°
72°
13
90°
70°
14
85°
68°
15
84°
65°
16
85°
67°
17
88°
69°
18
88°
69°
19
84°
68°
20
83°
67°
21
90°
69°
22
89°
68°
23
88°
63°
24
85°
62°
25
82°
62°
26
81°
60°
27
Hist. Avg.
85°
64°
28
Hist. Avg.
84°
63°
29
Hist. Avg.
84°
63°
30
Hist. Avg.
84°
62°
1
Hist. Avg.
84°
62°
2
Hist. Avg.
83°
62°
3
Hist. Avg.
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Flint
Flint's September 2026 forecast shows daily high temperatures ranging from 81° to 95°, with overnight lows between 60° and 73°. The average high for September is 89° with an average low of 69°. 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.
