S
M
T
W
T
F
S
30
103°
73°
31
102°
72°
1
102°
73°
2
102°
76°
3
100°
74°
4
100°
73°
5
104°
72°
6
104°
71°
7
102°
74°
8
102°
76°
9
103°
76°
10
81°
67°
11
90°
65°
12
85°
68°
13
88°
67°
14
97°
77°
15
96°
73°
16
95°
72°
17
94°
71°
18
92°
70°
19
91°
67°
20
73°
56°
21
72°
54°
22
76°
54°
23
78°
58°
24
77°
57°
25
78°
58°
26
80°
58°
27
83°
62°
28
79°
61°
29
78°
60°
30
76°
60°
1
78°
59°
2
80°
60°
3
80°
58°
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 72° to 97°, with overnight lows between 54° and 77°. The average high for September is 83° with an average low of 62°. 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.