September weather in Las Vegas, NV
The average temperature in Las Vegas in September is 82.2°F (70.2°F–94.2°F). Average precipitation: 0.24 inches.
September is a fall month in Las Vegas, and is warmer than the annual average of 68.8°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 13m. For travel, September is hot.
Avg High
94.2°F
Avg Low
70.2°F
Precipitation
0.24 in
Daylight
12h 13m
September records in Las Vegas
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 111.9°F (2022) | 64.0°F (2023) | 1.52 in (2023) |
| September 2 | 109.9°F (2022) | 71.1°F (2008) | 0.08 in (2023) |
| September 3 | 109.0°F (2020) | 66.9°F (2008) | 0.06 in (2013) |
| September 4 | 109.9°F (2020) | 64.9°F (2004) | 0.08 in (2003) |
| September 5 | 114.1°F (2020) | 66.0°F (2005) | 0.07 in (2025) |
| September 6 | 116.1°F (2020) | 66.9°F (2004) | 0.03 in (2002) |
| September 7 | 109.9°F (2021) | 66.9°F (2016) | 0.02 in (2010) |
| September 8 | 108.0°F (2021) | 66.0°F (2010) | 0.31 in (2014) |
| September 9 | 107.1°F (2021) | 61.0°F (2001) | 0.16 in (2013) |
| September 10 | 102.9°F (2015) | 62.1°F (2020) | 0.11 in (2021) |
| September 11 | 104.0°F (2021) | 63.0°F (2010) | 0.85 in (2012) |
| September 12 | 106.0°F (2021) | 62.1°F (2005) | 0.08 in (2022) |
| September 13 | 106.0°F (2021) | 61.0°F (2005) | 0.52 in (2011) |
| September 14 | 102.9°F (2021) | 62.1°F (2011) | 0.77 in (2011) |
| September 15 | 102.0°F (2014) | 62.1°F (2005) | 0.00 in (2001) |
| September 16 | 102.9°F (2020) | 61.0°F (2006) | 0.00 in (2001) |
| September 17 | 104.0°F (2020) | 61.0°F (2005) | 0.00 in (2001) |
| September 18 | 105.1°F (2020) | 61.0°F (2006) | 0.12 in (2025) |
| September 19 | 102.0°F (2010) | 60.1°F (2006) | 0.00 in (2001) |
| September 20 | 100.0°F (2009) | 59.0°F (2004) | 0.13 in (2005) |
| September 21 | 102.0°F (2020) | 57.0°F (2006) | 0.21 in (2007) |
| September 22 | 100.0°F (2002) | 57.0°F (2017) | 0.33 in (2007) |
| September 23 | 100.9°F (2003) | 57.9°F (2004) | 0.11 in (2019) |
| September 24 | 102.0°F (2020) | 54.0°F (2017) | 0.00 in (2001) |
| September 25 | 100.9°F (2015) | 55.0°F (2007) | 0.00 in (2001) |
| September 26 | 102.0°F (2024) | 60.1°F (2013) | 0.11 in (2014) |
| September 27 | 104.0°F (2024) | 55.9°F (2013) | 0.00 in (2001) |
| September 28 | 106.0°F (2024) | 54.0°F (2013) | 0.04 in (2022) |
| September 29 | 104.0°F (2024) | 55.0°F (2013) | 0.00 in (2001) |
| September 30 | 105.1°F (2024) | 53.1°F (2007) | 0.01 in (2005) |