S
M
T
W
T
F
S
30
99°
65°
31
98°
64°
1
97°
65°
2
97°
66°
3
98°
65°
4
98°
63°
5
96°
58°
6
93°
57°
7
88°
62°
8
89°
63°
9
94°
63°
10
95°
64°
11
96°
63°
12
91°
62°
13
94°
62°
14
94°
60°
15
90°
59°
16
87°
58°
17
90°
60°
18
94°
62°
19
94°
63°
20
93°
62°
21
93°
62°
22
86°
58°
23
83°
55°
24
87°
57°
25
86°
54°
26
85°
53°
27
84°
53°
28
82°
52°
29
83°
51°
30
82°
55°
1
82°
61°
2
87°
60°
3
90°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yuba City
Yuba City's September 2026 forecast shows daily high temperatures ranging from 82° to 99°, with overnight lows between 51° and 66°. The average high for September is 91° 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 Yuba City. See also: October | November | December.
