S
M
T
W
T
F
S
30
98°
82°
31
100°
75°
1
96°
77°
2
95°
74°
3
95°
73°
4
96°
75°
5
97°
74°
6
84°
75°
7
94°
70°
8
98°
73°
9
104°
81°
10
106°
81°
11
106°
85°
12
102°
83°
13
102°
83°
14
100°
76°
15
98°
72°
16
98°
78°
17
93°
76°
18
95°
77°
19
93°
72°
20
94°
69°
21
89°
71°
22
89°
66°
23
92°
71°
24
94°
69°
25
96°
71°
26
95°
75°
27
93°
72°
28
82°
64°
29
80°
63°
30
93°
71°
1
93°
65°
2
94°
69°
3
96°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Las Vegas
Las Vegas's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Las Vegas. See also: October | November | December.
