Las Vegas Climate: Hot Desert (Köppen BWh)

Las Vegas has a hot desert climate (BWh):

• Summers: Extreme heat; July avg high 40°C (104°F), often >43°C (110°F).
• Winters: Mild; January avg low 4°C (39°F), rare freezes.
• Precipitation: <10 inches (250 mm) annually; mostly winter rains, summer monsoonal bursts.
• Sunshine: ~310 days/year—among the sunniest U.S. cities.
• Humidity: Very low (often <10%), making heat feel less oppressive but increasing dehydration risk.

Visitors should hydrate constantly, avoid midday outdoor exertion in summer, and use sun protection year-round.