S
M
T
W
T
F
S
30
85°
61°
31
84°
63°
1
88°
65°
2
89°
66°
3
88°
65°
4
84°
65°
5
85°
61°
6
84°
60°
7
85°
64°
8
90°
66°
9
89°
65°
10
88°
66°
11
89°
66°
12
88°
65°
13
87°
64°
14
86°
64°
15
86°
65°
16
88°
64°
17
82°
64°
18
81°
61°
19
78°
59°
20
77°
60°
21
77°
56°
22
79°
53°
23
76°
54°
24
76°
60°
25
83°
59°
26
82°
60°
27
75°
61°
28
77°
60°
29
78°
59°
30
74°
51°
1
73°
48°
2
72°
47°
3
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sacramento
Sacramento's September 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 47° and 66°. The average high for September is 82° with an average low of 60°. 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 Sacramento. See also: October | November | December.