S
M
T
W
T
F
S
30
86°
71°
31
86°
70°
1
85°
69°
2
86°
71°
3
86°
72°
4
86°
71°
5
85°
70°
6
86°
71°
7
85°
70°
8
86°
71°
9
86°
72°
10
85°
71°
11
86°
71°
12
86°
70°
13
85°
71°
14
84°
71°
15
84°
70°
16
85°
71°
17
85°
70°
18
84°
70°
19
84°
68°
20
85°
69°
21
84°
70°
22
85°
71°
23
84°
70°
24
85°
71°
25
85°
70°
26
86°
70°
27
85°
69°
28
85°
70°
29
84°
69°
30
85°
70°
1
85°
70°
2
84°
69°
3
85°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Vegas
Vegas's September 2026 forecast shows daily high temperatures ranging from 84° to 86°, with overnight lows between 68° and 72°. The average high for September is 85° with an average low of 70°. 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 Vegas. See also: October | November | December.
