S
M
T
W
T
F
S
30
102°
79°
31
102°
78°
1
101°
78°
2
100°
80°
3
94°
78°
4
100°
77°
5
101°
77°
6
100°
79°
7
98°
78°
8
102°
82°
9
102°
81°
10
101°
76°
11
98°
77°
12
103°
79°
13
101°
79°
14
100°
79°
15
99°
78°
16
99°
76°
17
99°
74°
18
91°
71°
19
89°
64°
20
89°
70°
21
88°
69°
22
87°
68°
23
86°
64°
24
89°
70°
25
90°
69°
26
88°
70°
27
89°
69°
28
88°
69°
29
89°
68°
30
88°
68°
1
88°
67°
2
87°
67°
3
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saginaw
Saginaw's September 2026 forecast shows daily high temperatures ranging from 86° to 103°, with overnight lows between 64° and 79°. The average high for September is 92° with an average low of 71°. 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 Saginaw. See also: October | November | December.