🎰 Las Vegas Weather

A neon city in the Mojave

Las Vegas sits in the heart of the Mojave Desert, ringed by mountains in one of the driest, sunniest spots in North America. Its subtropical desert climate delivers blazing summers, mild winters, intense sunshine, and humidity so low that the air can feel like an open oven door in July. The city basks in sunshine roughly 310 days a year.

Extreme, dry summer heat

Summer is relentless. From June through August, highs routinely top 104°F (40°C), and the city has reached an all-time record of 120°F (49°C). The heat is dry, so it can feel deceptively manageable, but dehydration sets in fast. Overnight lows often stay above 80°F (27°C) as the desert and the city's concrete radiate stored heat.

Mild winters and a brief monsoon

Winters are pleasant, with January highs around 58°F (14°C), cold nights, and the occasional rare dusting of snow on the valley floor. In mid-to-late summer, a weak monsoon can spark sudden thunderstorms and dangerous flash floods that turn dry washes and streets into torrents within minutes.

Rainfall is scant — barely 4 inches (100 mm) a year — making Las Vegas one of the driest major cities in the United States, with the long-term drought of nearby Lake Mead a constant backdrop.

Mojave heat and flash-flood monsoons

Las Vegas sits in the Mojave Desert, one of the hottest and driest cities in the US, where summer highs above 105°F (41°C) are routine and readings past 115°F (46°C) occur. The dry air and surrounding valley trap heat, keeping nights warm during the peak of summer.

The North American Monsoon brings sudden summer thunderstorms that unleash flash floods through the valley's washes and streets, since the sun-baked ground barely absorbs water. Winters are mild and sunny with cool nights, and measurable rain is so rare the city averages barely 4 inches (100 mm) a year.