Henderson, NV Climate & Monthly Averages
Henderson has a hot desert climate. July is the hottest month, averaging 105° by day; December is the coldest at 57°.
Henderson's climate runs on sunshine and sparse rain
Rain is the exception in Henderson. The city collects about 5.9 inches (151 mm) across 26 wet days in a typical year, which leaves the sky clear for most of it - 11.1 hours of sunshine a day on average. Highs run from 57°F (14°C) in December to 105°F (40°C) in July.
What the dry climate changes
11 months average under 20 mm of rain, the longest unbroken stretch running February through December. July is the warm end of the year, averaging 105°F (40°C) by day and 82°F (28°C) overnight. December is the coolest month, with highs of 57°F (14°C) and lows near 40°F (4°C). The gridded 2015-2024 daily record for this location tops out at 118°F (48°C) and bottoms at 25°F (-4°C) - decade extremes, not all-time station records.
Days and nights are about 12°C apart on average - wider than roughly 89% of the cities we track.
Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is March through April.
More climate facts for Henderson
- Hottest month: July - highs near 105°F (40°C)
- Coldest month: December - highs near 57°F (14°C)
- Decade extremes (2015-2024): 118°F (48°C) high · 25°F (-4°C) low
- Wettest month: January (4 rainy days) · Sunniest: June (13.7 h sun/day)
- Climate type: hot desert
- Annual swing: 26°C between the average warmest and coolest month · day to night: 12°C
- Months averaging 30°C or hotter: 5
- Average humidity: 28%
Heat, cold and scarce precipitation in the dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
When the dry weather is easiest to use
Avoiding the hardest heat or cold
The best time to visit Henderson is generally February to April and October to November, when temperatures sit either side of the peak heat rather than in it. Daytime temperatures in that window sit near 72°F (22°C), with rain on about 2 days a month. For the same question asked the other way round, see where else is warm in February.
Prepare for sun and cooler nights
Pack for Henderson with lightweight, breathable clothing and serious sun protection and a warm jacket and layers for the cooler season. Note the gap between afternoon and night: July pairs 105°F (40°C) with 82°F (28°C).
Monthly heat and rainfall table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 57° | 40° | 4 | 1.0 in | 8.5 h/day | 10.0 h | 13% | 48% |
| February | 62° | 42° | 3 | 0.8 in | 9.5 h/day | 10.8 h | 12% | 38% |
| March | 70° | 49° | 4 | 0.8 in | 10.6 h/day | 11.9 h | 13% | 32% |
| April | 80° | 57° | 1 | 0.2 in | 12.3 h/day | 13.1 h | 5% | 21% |
| May | 87° | 65° | 2 | 0.2 in | 13.0 h/day | 14.1 h | 5% | 20% |
| June | 101° | 76° | 0 | 0.1 in | 13.7 h/day | 14.6 h | 1% | 14% |
| July | 105° | 82° | 2 | 0.6 in | 13.2 h/day | 14.4 h | 8% | 20% |
| August | 103° | 80° | 2 | 0.6 in | 12.5 h/day | 13.5 h | 8% | 24% |
| September | 95° | 72° | 2 | 0.4 in | 11.6 h/day | 12.4 h | 5% | 23% |
| October | 81° | 59° | 1 | 0.3 in | 10.6 h/day | 11.2 h | 5% | 27% |
| November | 66° | 47° | 1 | 0.4 in | 9.4 h/day | 10.2 h | 5% | 31% |
| December | 57° | 40° | 2 | 0.6 in | 8.1 h/day | 9.7 h | 6% | 41% |
How daytime heat and cool nights change by month
Each card shows the average high and low. The bar places that month between Henderson's coldest night and warmest afternoon.
January
- Rain
- 4 days
- Sunshine
- 8.5 h
- Daylight
- 10.0 h
February
- Rain
- 3 days
- Sunshine
- 9.5 h
- Daylight
- 10.8 h
March
- Rain
- 4 days
- Sunshine
- 10.6 h
- Daylight
- 11.9 h
April
- Rain
- 1 day
- Sunshine
- 12.3 h
- Daylight
- 13.1 h
May
- Rain
- 2 days
- Sunshine
- 13.0 h
- Daylight
- 14.1 h
June
- Rain
- 0 days
- Sunshine
- 13.7 h
- Daylight
- 14.6 h
July
- Rain
- 2 days
- Sunshine
- 13.2 h
- Daylight
- 14.4 h
August
- Rain
- 2 days
- Sunshine
- 12.5 h
- Daylight
- 13.5 h
September
- Rain
- 2 days
- Sunshine
- 11.6 h
- Daylight
- 12.4 h
October
- Rain
- 1 day
- Sunshine
- 10.6 h
- Daylight
- 11.2 h
November
- Rain
- 1 day
- Sunshine
- 9.4 h
- Daylight
- 10.2 h
December
- Rain
- 2 days
- Sunshine
- 8.1 h
- Daylight
- 9.7 h
Looking for warmer alternatives? Browse warm places by month, or compare Henderson's coolest part of the year: January, December, February.
Heat and cold across the Henderson year
Spring (March through May)
Spring in Henderson settles into easy warmth, with daytime highs averaging 79°F (26°C) and nights around 57°F (14°C); precipitation is sparse, near 1.2 inches (29 mm) for the season. Daylight is generous - around 12.0 hours of sun a day.
Summer (June through August)
Through summer, Henderson turns very hot: 103°F (39°C) by day, 80°F (26°C) after dark, and precipitation is sparse, near 1.3 inches (34 mm) for the season. Daylight is generous - around 13.1 hours of sun a day.
Fall (September through November)
Fall is hot here - highs near 81°F (27°C), nights near 59°F (15°C), and precipitation is sparse, near 1.2 inches (29 mm) for the season. Daylight is generous - around 10.5 hours of sun a day.
Winter (December through February)
Through winter, Henderson runs cool rather than cold: 59°F (15°C) by day, 41°F (5°C) after dark, and rain comes on about 9 days over the three months.
How unusual is Henderson?
- Relative humidity averages 28% - drier than almost every other city we track.
- Annual precipitation is 5.9 inches (151 mm) - drier than all but 3% of the 3496 cities we track.
- The city sees 11.1 hours of sunshine on an average day - sunnier than 97% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.