Planning a trip to the entertainment capital of the world requires understanding its intense desert climate. Las Vegas weather swings dramatically from scorching summer highs exceeding 105 degrees Fahrenheit to crisp winter nights that require a heavy jacket. Knowing what to expect each month ensures you pack the right wardrobe, book pool time strategically, and avoid unexpected weather surprises.
Spring: March to May
Spring brings some of the most pleasant temperatures of the entire year, making it peak season for outdoor exploration, hiking in nearby Red Rock Canyon, and walking the Strip without overheating.
March
- Average High: 72 degrees Fahrenheit (22 degrees Celsius)
- Average Low: 49 degrees Fahrenheit (9 degrees Celsius)
- What to expect: March kicks off with mild, comfortable days, though wind gusts can pick up across the valley. Evenings remain chilly, so pack a light jacket or sweater for nighttime strolls.
April
- Average High: 80 degrees Fahrenheit (27 degrees Celsius)
- Average Low: 56 degrees Fahrenheit (13 degrees Celsius)
- What to expect: Daytime weather is nearly ideal for poolside lounging and sightseeing. Rain is rare, and humidity stays very low.
May
- Average High: 90 degrees Fahrenheit (32 degrees Celsius)
- Average Low: 65 degrees Fahrenheit (18 degrees Celsius)
- What to expect: Summer heat begins to make its presence known by late afternoon. Hotel pools operate at full capacity, and daytime sun protection becomes mandatory.
Summer: June to August
Summer in the Mojave Desert is fierce. Daytime temperatures routinely cross the triple-digit mark, transforming the outdoor Strip into a furnace while indoor casinos blast heavy air conditioning.
June
- Average High: 100 degrees Fahrenheit (38 degrees Celsius)
- Average Low: 74 degrees Fahrenheit (23 degrees Celsius)
- What to expect: Dry, intense heat sets in. While it's hot during the day, the lack of humidity prevents the air from feeling suffocating, though dehydration happens quickly.
July
- Average High: 105 degrees Fahrenheit (41 degrees Celsius)
- Average Low: 80 degrees Fahrenheit (27 degrees Celsius)
- What to expect: July is statistically the hottest month of the year. Afternoon temperatures frequently peak above 110 degrees Fahrenheit. The North American Monsoon occasionally brings brief thunderstorms or high humidity spikes later in the month.
August
- Average High: 103 degrees Fahrenheit (39 degrees Celsius)
- Average Low: 79 degrees Fahrenheit (26 degrees Celsius)
- What to expect: High heat persists through August. Warm desert nights mean temperatures rarely drop below 78 degrees even after midnight, keeping nighttime pool parties packed.
Autumn: September to November
As summer fades, autumn brings rapid relief from the extreme heat, offering comfortable weather that rivals the spring season.
September
- Average High: 95 degrees Fahrenheit (35 degrees Celsius)
- Average Low: 71 degrees Fahrenheit (22 degrees Celsius)
- What to expect: Early September still feels like summer, but temperatures steadily decline by the middle and end of the month. Crowds thin out slightly after Labor Day, making it a favorite month for frequent visitors.
October
- Average High: 82 degrees Fahrenheit (28 degrees Celsius)
- Average Low: 59 degrees Fahrenheit (15 degrees Celsius)
- What to expect: October delivers some of the best weather of the year. Daytime highs are warm without being oppressive, and evening temperatures are crisp and refreshing.
November
- Average High: 67 degrees Fahrenheit (19 degrees Celsius)
- Average Low: 47 degrees Fahrenheit (8 degrees Celsius)
- What to expect: Winter approaches fast. While afternoons remain sunny and pleasant for walking, you will definitely need a coat once the sun sets behind the mountains.
Winter: December to February
Winters in Las Vegas are short and generally mild, though overnight temperatures can occasionally dip close to freezing.
December
- Average High: 58 degrees Fahrenheit (14 degrees Celsius)
- Average Low: 39 degrees Fahrenheit (4 degrees Celsius)
- What to expect: December is the coolest month of the year. Holiday decorations light up the Strip, but outdoor pool complexes close for the season.
January
- Average High: 58 degrees Fahrenheit (14 degrees Celsius)
- Average Low: 39 degrees Fahrenheit (4 degrees Celsius)
- What to expect: Crisp, clear winter days dominate January. It's an ideal month for exploring downtown Las Vegas or taking day trips to Death Valley National Park without dealing with dangerous heat.
February
- Average High: 63 degrees Fahrenheit (17 degrees Celsius)
- Average Low: 43 degrees Fahrenheit (6 degrees Celsius)
- What to expect: Winter's grip begins to loosen. Sunny afternoons feel warmer, though temperature swings between day and night remain sharp.
Desert Weather Survival Tips
- Hydrate constantly: Dry desert air accelerates sweat evaporation, meaning you won't realize how much water you're losing. Carry a reusable water bottle everywhere.
- Layer your clothing: Desert temperatures plunge quickly after sunset, especially from October through April. A sweater or light jacket saves you from shivering on late-night casino walks.
- Protect your skin: UV index ratings remain high even during cooler months. Apply broad-spectrum sunscreen daily, especially when walking outdoors between 10 a.m. and 4 p.m.
- Watch out for pool closures: Most resort pools close during the winter months (November through February), or maintain only one heated pool. Check your hotel's seasonal pool policy before booking.
Frequently Asked Questions
Does it ever snow in Las Vegas?
Snow is extremely rare on the Las Vegas Strip, though light flurries occasionally dust the surrounding mountain foothills and higher suburban elevations during mid-winter cold snaps.
When do Las Vegas hotel pools open for the season?
Most major resort pools reopen in March as spring temperatures climb into the 70s and 80s, remaining open through October before closing for cooler weather.
Why does Las Vegas feel so much hotter than the temperature suggests?
The low relative humidity in the Mojave Desert prevents sweat from sticking to your skin, which tricks your body into thinking you aren't overheating as fast as you actually are. This leads to rapid dehydration and heat exhaustion if you don't drink water consistently.
How windy does Las Vegas get in the spring?
Spring weather fronts frequently generate sustained winds and sudden gusts between 20 and 40 miles per hour across the open desert valley, occasionally causing minor flight delays or outdoor attraction adjustments.
