Las Vegas, Nevada Weather in September
United States · September climate averages and travel tips
Avg high36°C (97°F)
Avg low22°C (71°F)
Rainfall10 mm (0.4 in)
RatingFair 5.1/10
Las Vegas in September sees daytime temperatures around 36°C (97°F), dropping to about 22°C (71°F) at night. September is autumn (fall) in United States. The month is very dry, with about 10 mm (0.4 in) of rain spread over 2 days. The air is dry, with average humidity of just 24%. You get roughly 12.2 hours of daylight and mostly clear skies.
Is September a good time to visit Las Vegas?
September is a fair time to visit Las Vegas (5.1/10) mainly because of the heat. For better weather, go in February to April and October to November.
September weather at a glance
| Average high | 36°C (97°F) |
|---|---|
| Average low | 22°C (71°F) |
| Daily mean | 29°C (84°F) |
| Rainfall | 10 mm (0.4 in) |
| Rainy days (1 mm+) | 2 |
| Humidity | 24% |
| Cloud cover | 25% |
| Daylight | 12.2 hours |
| Est. sunshine | 10.1 hours/day |
| Wind | 8.3 km/h |
| vs August | 4°C cooler than August, with similar rainfall. |
What to pack for Las Vegas in September
- light, breathable clothing
- sunscreen and a hat
- swimwear
Las Vegas weather in other months
Jan15°C / 3°C20 mmExcellentFeb18°C / 4°C18 mmExcellentMar22°C / 8°C13 mmExcellentApr27°C / 11°C6 mmExcellentMay32°C / 16°C4 mmGoodJun39°C / 22°C1 mmPoorJul42°C / 27°C16 mmPoorAug40°C / 26°C17 mmPoorSep36°C / 22°C10 mmFairOct29°C / 14°C10 mmExcellentNov21°C / 8°C9 mmExcellentDec15°C / 3°C17 mmExcellent
← AugustBest time to visit Las VegasOctober →
Better weather in September nearby
- San Francisco, California24°C · 4 mm · Excellent
- Seattle, Washington21°C · 62 mm · Excellent
- Denver, Colorado29°C · 35 mm · Excellent
- Calgary20°C · 49 mm · Excellent
- Edmonton19°C · 41 mm · Excellent
- Toronto22°C · 62 mm · Excellent
Nearby in September
- Los Angeles, California31°C · 4 mm
- Mexicali40°C · 8 mm
- Phoenix, Arizona38°C · 22 mm
- San Diego, California30°C · 6 mm
- Tijuana30°C · 6 mm
- San Francisco, California24°C · 4 mm
Where else is good in September? See where to go in September.