S
M
T
W
T
F
S
30
75°
57°
31
77°
50°
1
77°
49°
2
72°
48°
3
73°
50°
4
75°
58°
5
80°
52°
6
79°
47°
7
72°
47°
8
72°
48°
9
75°
55°
10
74°
51°
11
72°
54°
12
70°
53°
13
70°
47°
14
69°
45°
15
68°
44°
16
69°
49°
17
69°
52°
18
74°
53°
19
76°
53°
20
77°
52°
21
74°
44°
22
71°
49°
23
66°
43°
24
68°
42°
25
64°
41°
26
66°
45°
27
71°
51°
28
64°
50°
29
72°
49°
30
Hist. Avg.
66°
44°
1
Hist. Avg.
65°
43°
2
Hist. Avg.
65°
43°
3
Hist. Avg.
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Carson City
Carson City's September 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 41° and 58°. The average high for September is 72° with an average low of 49°. 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 Carson City. See also: October | November | December.