S
M
T
W
T
F
S
30
85°
62°
31
81°
54°
1
65°
49°
2
66°
50°
3
63°
55°
4
64°
52°
5
70°
54°
6
72°
55°
7
79°
59°
8
86°
64°
9
91°
73°
10
91°
75°
11
86°
72°
12
82°
59°
13
70°
52°
14
77°
57°
15
77°
59°
16
72°
55°
17
68°
46°
18
73°
54°
19
79°
66°
20
79°
63°
21
75°
63°
22
77°
61°
23
82°
63°
24
84°
66°
25
N/A
26
75°
61°
27
N/A
28
77°
59°
29
89°
64°
30
87°
64°
1
89°
67°
2
91°
67°
3
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Nevada City
Nevada City's September 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 59° and 67°. The average high for September is 87° with an average low of 65°. 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 Nevada City. See also: October | November | December.