Henderson (NV) Temperature by Month

Henderson in Nevada, United States of America sees significant seasonal temperature differences, with daytime highs between 14°C (57°F) in December and 41°C (106°F) in July, averaging 28°C (82°F) annually. Explore the full monthly breakdown below.

Depending on the time of the year, temperatures range from very hot to mild in Henderson. Nighttime lows follow the same pattern, ranging from 27°C (81°F) to 3°C (37°F).

The chart below illustrates the average maximum day and minimum night temperatures in Henderson by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 383 hours of sunshine.

The chart below shows the average temperature throughout the year:

Henderson's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Henderson, December is the coolest month, with average highs of 14°C (57°F) and humidity around 45%, considered moderate. In July, the warmest month, temperatures average 41°C (106°F) with 21% humidity, conditions that feel low. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Henderson's weather, including monthly rainfall, sunshine hours, and humidity, visit our Henderson climate page.