HVAC
Air conditioning is the workhorse: most homes run AC hard from June through September and occasionally into October. Keep filters changed, service the unit before summer, and ask for the AC unit age and service history on any home.
Weather in Henderson, NV
Henderson has a hot desert climate: long, dry summers with July average highs around 103-104\u00B0F, mild and mostly sunny winters with January lows near 38\u00B0F, and only about 4-5 inches of rain a year. The climate shapes nearly everything about owning a home here, from HVAC budgets to landscaping and pool maintenance.
Last updated 2026-09-10 · By Bev Prock, NV License S.0078180
The numbers
Henderson climate basics
Normals from public climate sources; actual readings vary year to year.
Climate type
Hot desert (Köppen BWh)
Hottest month
July, average highs around 103-104°F (meteorological normals vary by source)
Coldest month
January, average lows near 38°F
Annual rainfall
Roughly 4-5 inches
Snow
Essentially none in the valley; ski areas sit in the mountains a few hours away
Sunshine
300-plus sunny days a year
Humidity
Low, especially outside the summer monsoon season
What each season is actually like
Summer (Jun-Sep)
Hot and dry with occasional monsoon storms in July and August that bring brief humidity, lightning and flash-flooding in washes. Outdoor plans shift to mornings and evenings.
Fall (Oct-Nov)
The best season: warm days, cool nights, and very little rain. This is peak time for hiking, golf and patio weather.
Winter (Dec-Feb)
Mild and mostly sunny. Daytime highs commonly 55-65°F with overnight lows near 38-45°F. Heaters run at night; snow in the valley is rare.
Spring (Mar-May)
Warming fast, with peak wildflower years in the desert and pleasant weather before the June heat arrives.
Owning through the seasons
How the climate changes home maintenance
Water & irrigation
Desert landscaping uses drip irrigation and desert-adapted plants rather than lawns. Check irrigation controllers, valves and emitters on any property; frozen or leaking emitters are the classic maintenance surprise.
Pools
Pools are a common amenity and a year-round maintenance item: chemical balance in summer, covers in winter, and equipment that should be inspected annually.
Exteriors & roofs
Intense UV ages paint, sealants and roofing faster than milder climates. Plan for more frequent exterior upkeep, and in foothill areas, keep defensible space around the home for fire safety.
Climate questions for a specific home?
Bev can point out what to check on any property: AC age, irrigation condition, pool equipment, window efficiency and orientation.
Sources: USDA climate normals and public climate references for Henderson, Nevada. Figures as of 2026-09-10.