Climate averages 1991–2020
Henderson weather
in May.
A hot, very dry month: the 5th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Henderson: daytime highs average 30.7°C and nights cool to about 17.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 2.6 mm of rain on fewer than one day, which makes May a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 03 min on an average May day.
The nearest other city in this atlas is Paradise (16 km away). In May its highs average 30.2°C, 0.5°C cooler than Henderson, with 4.2 mm of rain.
Among the 498 cities listed in the United States, Henderson ranks 22nd of 498 for the warmest May highs and 2nd of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Henderson is 7.0°C warmer than that mean.
From May to June, average highs rise by 5.9°C to 36.6°C, and monthly rainfall falls from 2.6 mm to 1.4 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Paradise in MayUnited States · 16 kmHigh 30.2°C · Low 16.7°C · 4.2 mm rain
- Las Vegas in MayUnited States · 21 kmHigh 30.1°C · Low 16.8°C · 5.4 mm rain
- Enterprise in MayUnited States · 23 kmHigh 28.9°C · Low 15.4°C · 4.2 mm rain
- Spring Valley in MayUnited States · 25 kmHigh 29.6°C · Low 15.7°C · 4.2 mm rain
- Saint George in MayUnited States · 172 kmHigh 28.1°C · Low 15.7°C · 8.5 mm rain
- Apple Valley in MayUnited States · 263 kmHigh 26.0°C · Low 11.6°C · 4.7 mm rain
- Victorville in MayUnited States · 268 kmHigh 26.6°C · Low 11.9°C · 4.7 mm rain
- Hesperia in MayUnited States · 277 kmHigh 25.1°C · Low 10.7°C · 4.7 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.