Climate averages 1991–2020
Las Vegas weather
in August.
A very hot, very dry month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Las Vegas: daytime highs average 37.6°C and nights cool to about 25.4°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 9.7 mm of rain on roughly 2 days, which makes August a very dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 32 min on an average August day.
The nearest other city in this atlas is Paradise (9 km away). In August its highs average 37.8°C, about as warm as Las Vegas, with 12 mm of rain.
Among the 498 cities listed in the United States, Las Vegas ranks 16th of 498 for the warmest August highs and 112th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Las Vegas is 7.7°C warmer than that mean.
From August to September, average highs fall by 4.3°C to 33.4°C, and monthly rainfall falls from 9.7 mm to 7.2 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Las Vegas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.7°C3.7°C | 3.7°C | 22 | 3.7 | 10.010 h |
| February | 15.9°C5.1°C | 5.1°C | 30 | 4.8 | 10.811 h |
| March | 20.5°C8.5°C | 8.5°C | 16 | 3.5 | 11.912 h |
| April | 24.9°C11.9°C | 11.9°C | 7.3 | 2.2 | 13.113 h |
| May | 30.1°C16.8°C | 16.8°C | 5.4 | 1.5 | 14.114 h |
| June | 35.9°C22.2°C | 22.2°C | 1.8 | 0.4 | 14.615 h |
| July | 38.7°C26.1°C | 26.1°C | 7.0 | 2.2 | 14.414 h |
| August, selected | 37.6°C25.4°C | 25.4°C | 9.7 | 2.0 | 13.514 h |
| September | 33.4°C21.0°C | 21.0°C | 7.2 | 1.1 | 12.412 h |
| October | 26.1°C14.4°C | 14.4°C | 8.2 | 1.6 | 11.311 h |
| November | 18.4°C8.1°C | 8.1°C | 10 | 1.5 | 10.310 h |
| December | 12.8°C3.4°C | 3.4°C | 21 | 3.3 | 9.710 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Paradise in AugustUnited States · 9 kmHigh 37.8°C · Low 25.2°C · 12 mm rain
- Spring Valley in AugustUnited States · 12 kmHigh 37.3°C · Low 24.3°C · 12 mm rain
- Enterprise in AugustUnited States · 19 kmHigh 36.6°C · Low 23.8°C · 12 mm rain
- Henderson in AugustUnited States · 21 kmHigh 38.3°C · Low 25.8°C · 10 mm rain
- Saint George in AugustUnited States · 173 kmHigh 35.6°C · Low 24.8°C · 14 mm rain
- Apple Valley in AugustUnited States · 263 kmHigh 34.4°C · Low 19.2°C · 6.0 mm rain
- Victorville in AugustUnited States · 267 kmHigh 35.2°C · Low 19.6°C · 6.0 mm rain
- Hesperia in AugustUnited States · 276 kmHigh 33.7°C · Low 18.6°C · 6.0 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Las Vegas) is explained once on the Las Vegas year overview and on the Sources, method and limits page.