S
M
T
W
T
F
S
30
85°
62°
31
81°
54°
1
65°
49°
2
70°
53°
3
62°
49°
4
69°
53°
5
74°
54°
6
76°
54°
7
75°
59°
8
81°
63°
9
84°
65°
10
82°
60°
11
77°
60°
12
77°
61°
13
78°
61°
14
80°
64°
15
82°
56°
16
82°
59°
17
85°
58°
18
77°
59°
19
82°
59°
20
84°
57°
21
84°
59°
22
83°
58°
23
80°
58°
24
79°
57°
25
82°
58°
26
83°
58°
27
84°
57°
28
83°
58°
29
82°
58°
30
81°
56°
1
82°
57°
2
81°
56°
3
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nevada City
Nevada City's September 2026 forecast shows daily high temperatures ranging from 62° to 85°, with overnight lows between 49° and 65°. The average high for September is 79° with an average low of 58°. 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.