S
M
T
W
T
F
S
30
86°
70°
31
86°
70°
1
88°
68°
2
88°
66°
3
88°
73°
4
90°
70°
5
84°
68°
6
81°
66°
7
79°
64°
8
77°
68°
9
81°
59°
10
81°
55°
11
82°
57°
12
72°
55°
13
64°
52°
14
72°
54°
15
70°
53°
16
67°
61°
17
72°
64°
18
84°
66°
19
71°
59°
20
69°
55°
21
68°
52°
22
70°
49°
23
71°
50°
24
74°
51°
25
75°
53°
26
74°
51°
27
72°
50°
28
73°
45°
29
72°
51°
30
70°
47°
1
73°
50°
2
71°
50°
3
73°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sac City
Sac City's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 45° and 66°. The average high for September is 72° with an average low of 53°. 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 Sac City. See also: October | November | December.
