Climate averages 1991–2020
Henderson weather
in August.
A very hot, very dry month: the 2nd warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Henderson: daytime highs average 38.3°C and nights cool to about 25.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 10 mm of rain on roughly 3 days, which makes August a very dry month (the joint 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 (16 km away). In August its highs average 37.8°C, about as warm as Henderson, with 12 mm of rain.
Among the 498 cities listed in the United States, Henderson ranks 14th of 498 for the warmest August highs and joint 114th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Henderson is 8.4°C warmer than that mean.
From August to September, average highs fall by 4.2°C to 34.1°C, and monthly rainfall falls from 10 mm to 6.5 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
Henderson climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.6°C5.5°C | 5.5°C | 19 | 3.2 | 10.010 h |
| February | 16.7°C6.5°C | 6.5°C | 25 | 4.0 | 10.811 h |
| March | 21.2°C9.4°C | 9.4°C | 15 | 3.0 | 11.912 h |
| April | 25.5°C12.6°C | 12.6°C | 5.0 | 1.4 | 13.113 h |
| May | 30.7°C17.5°C | 17.5°C | 2.6 | 0.8 | 14.114 h |
| June | 36.6°C22.6°C | 22.6°C | 1.4 | 0.3 | 14.615 h |
| July | 39.3°C26.5°C | 26.5°C | 7.1 | 2.3 | 14.314 h |
| August, selected | 38.3°C25.8°C | 25.8°C | 10 | 2.5 | 13.514 h |
| September | 34.1°C21.7°C | 21.7°C | 6.5 | 1.3 | 12.412 h |
| October | 26.8°C15.4°C | 15.4°C | 8.0 | 1.3 | 11.311 h |
| November | 19.2°C9.4°C | 9.4°C | 10 | 1.4 | 10.310 h |
| December | 13.7°C5.2°C | 5.2°C | 17 | 2.5 | 9.810 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 · 16 kmHigh 37.8°C · Low 25.2°C · 12 mm rain
- Las Vegas in AugustUnited States · 21 kmHigh 37.6°C · Low 25.4°C · 9.7 mm rain
- Enterprise in AugustUnited States · 23 kmHigh 36.6°C · Low 23.8°C · 12 mm rain
- Spring Valley in AugustUnited States · 25 kmHigh 37.3°C · Low 24.3°C · 12 mm rain
- Saint George in AugustUnited States · 172 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 · 268 kmHigh 35.2°C · Low 19.6°C · 6.0 mm rain
- Hesperia in AugustUnited States · 277 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 Henderson) is explained once on the Henderson year overview and on the Sources, method and limits page.