Climate in Las Vegas — Annual Weather Overview
Las Vegas has a arid climate — hot and dry with very little rainfall. The hottest month is July (average high 41.6°C) and the coolest is January (14.3°C). The seasons are strongly defined — a 27.3°C swing between July highs and January lows. Rainfall is very low at around 113mm a year — August sees the most at 25.5mm. Average daily sunshine is 11.1 hours.
**Spring (March, April, May):** average highs 26.6°C, 21mm rain. **Summer (June, July, August):** average highs 39.6°C, 37mm rain. **Autumn (September, October, November):** average highs 28.1°C, 26mm rain. **Winter (December, January, February):** average highs 15.4°C, 29mm rain.
Las Vegas — Monthly Temperatures
Las Vegas — Monthly Rainfall
✅ Best months to visit
September to June
ℹ️ No months to avoid
Weather in Las Vegas stays reasonable all year.
Las Vegas weather by month
| Month | High | Low | Rain | Sun/day | Rainy days | Rating |
|---|---|---|---|---|---|---|
| January | 14.3°C | 3.5°C | 12.6mm | 8.6h | 3 | 10/10 |
| February | 17.3°C | 5.0°C | 6.5mm | 9.9h | 1 | 10/10 |
| March | 20.0°C | 8.6°C | 18.8mm | 10.4h | 6 | 10/10 |
| April | 27.4°C | 14.1°C | 2.0mm | 12.3h | 0 | 10/10 |
| May | 32.5°C | 19.0°C | 0.4mm | 13.1h | 0 | 10/10 |
| June | 37.6°C | 23.9°C | 4.8mm | 13.6h | 0 | 8/10 |
| July | 41.6°C | 28.1°C | 6.7mm | 13.2h | 1 | 6/10 |
| August | 39.5°C | 26.5°C | 25.5mm | 12.3h | 3 | 6/10 |
| September | 36.0°C | 22.5°C | 15.7mm | 11.4h | 1 | 8/10 |
| October | 28.4°C | 15.3°C | 4.0mm | 10.7h | 1 | 10/10 |
| November | 19.8°C | 8.5°C | 6.7mm | 9.3h | 1 | 10/10 |
| December | 14.6°C | 4.2°C | 9.6mm | 8.0h | 2 | 10/10 |
For the full verdict on when to go, see the best time to visit Las Vegas. Seasonal breakdowns: spring, summer, autumn and winter.
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Frequently Asked Questions
What type of climate does Las Vegas have?
Las Vegas has a arid climate — hot and dry with very little rainfall. Average highs range from 14.3°C in January to 41.6°C in July.
What is the hottest month in Las Vegas?
July is the hottest month in Las Vegas, with average highs of 41.6°C and lows of 28.1°C.
What is the coldest month in Las Vegas?
January is the coolest month, with average highs of 14.3°C and lows of 3.5°C.
What is the wettest month in Las Vegas?
August is the wettest month, averaging 25.5mm of rainfall over around 3 rainy days.
How much rain does Las Vegas get per year?
Las Vegas receives around 113mm of rain per year. The driest month is May (0.4mm).
When is the best time to visit Las Vegas?
The best time to visit Las Vegas is September to June. See the full month-by-month guide →
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.