S
M
T
W
T
F
S
30
103°
80°
31
104°
79°
1
101°
78°
2
98°
74°
3
Hist. Avg.
98°
74°
4
Hist. Avg.
97°
73°
5
Hist. Avg.
97°
73°
6
Hist. Avg.
97°
73°
7
Hist. Avg.
96°
72°
8
Hist. Avg.
96°
72°
9
Hist. Avg.
96°
72°
10
Hist. Avg.
95°
71°
11
Hist. Avg.
95°
71°
12
Hist. Avg.
95°
71°
13
Hist. Avg.
94°
70°
14
Hist. Avg.
94°
70°
15
Hist. Avg.
94°
70°
16
Hist. Avg.
93°
69°
17
Hist. Avg.
93°
69°
18
Hist. Avg.
92°
68°
19
Hist. Avg.
92°
68°
20
Hist. Avg.
92°
68°
21
Hist. Avg.
91°
67°
22
Hist. Avg.
91°
67°
23
Hist. Avg.
90°
66°
24
Hist. Avg.
90°
66°
25
Hist. Avg.
89°
66°
26
Hist. Avg.
89°
65°
27
Hist. Avg.
88°
65°
28
Hist. Avg.
88°
64°
29
Hist. Avg.
88°
64°
30
Hist. Avg.
87°
63°
1
Hist. Avg.
87°
63°
2
Hist. Avg.
86°
62°
3
Hist. Avg.
86°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Las Vegas
Las Vegas's September 2026 forecast shows daily high temperatures ranging from 98° to 104°, with overnight lows between 74° and 80°. The average high for September is 102° with an average low of 78°. 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.
