S
M
T
W
T
F
S
30
80°
63°
31
88°
71°
1
88°
73°
2
93°
71°
3
95°
71°
4
85°
68°
5
86°
61°
6
79°
56°
7
81°
56°
8
86°
57°
9
89°
70°
10
85°
65°
11
84°
58°
12
77°
64°
13
86°
65°
14
73°
53°
15
85°
67°
16
83°
67°
17
85°
64°
18
78°
58°
19
79°
60°
20
72°
54°
21
73°
53°
22
70°
53°
23
71°
50°
24
73°
51°
25
75°
52°
26
76°
48°
27
77°
53°
28
76°
54°
29
75°
53°
30
73°
54°
1
73°
54°
2
75°
52°
3
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nevada
Nevada's September 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 48° and 67°. The average high for September is 76° with an average low of 55°. 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. See also: October | November | December.