You’ve seen the movies where Vegas is a shimmering heat mirage, but honestly, if you haven’t done the desert in the dead of winter, you’re missing the city’s best version of itself. January isn’t about melting on the pavement. It's about that crisp, sharp air that makes the neon look even brighter.
The current 7 day forecast in Las Vegas for this third week of January 2026 is looking like a dream for anyone who hates sweating through their clothes. We’re sitting in a sweet spot where the high-pressure systems are keeping things stable, though a bit of cloud cover is hanging around to keep the "dry heat" enthusiasts on their toes.
What’s Actually Happening Outside Right Now?
Right now, as of Sunday, January 18, it’s about 60°F and mostly cloudy. It feels like a proper winter day, but without the slush and misery of the East Coast. The wind is basically non-existent—just a light 1 mph breeze from the east.
If you’re heading out today, expect a high of 64°F. That’s the kind of weather where a light jacket is your best friend. But don't let the clouds fool you; the humidity is only 21%, so it still has that signature desert dryness that’ll zap the moisture right out of your skin if you aren't drinking water like it’s your job.
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The Week Ahead: Sunny Breaks and Chilly Nights
Looking at the 7 day forecast in Las Vegas, Monday is going to be the absolute winner of the week. We’re talking a high of 69°F and pure, unadulterated sunshine. It’s perfect for a walk down the Strip or even a quick hike out at Red Rock.
- Monday, Jan 19: High of 69°F, Low of 43°F. Sunny and clear.
- Tuesday, Jan 20: High of 64°F, Low of 40°F. Sunny during the day, getting a bit cloudy at night.
- Wednesday, Jan 21: High of 64°F, Low of 40°F. Mostly cloudy with a 10% chance of a stray shower.
The rest of the week stays remarkably consistent. From Thursday through Sunday, highs are hovering between 64°F and 67°F. It’s predictable. It’s steady. It’s basically the weather equivalent of a safe bet at the blackjack table.
Why the Lows Matter More Than the Highs
Here is what most people get wrong about Vegas: they pack for the 65-degree day and completely forget the 40-degree night.
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Desert temperatures pull a disappearing act as soon as the sun dips behind the Spring Mountains. By Tuesday and Wednesday nights, we’re looking at lows of 40°F. If you’re planning on hopping between casinos or hitting an outdoor lounge like the Chandelier bar’s terrace, you will feel that 20-degree drop.
Honestly, the "send temps" are here. Local climbers at Red Rock Canyon live for this. When it’s 64°F in the valley, the friction on the sandstone is legendary. Just keep in mind that the UV index is low (around 1 to 3 this week), so while you won't burn in ten minutes, that high-altitude sun is still doing work.
Is Rain Going to Ruin Your Trip?
Probably not. The 7 day forecast in Las Vegas shows a few "blips" of precipitation—10% on Wednesday and Thursday—but in Vegas terms, that usually means three raindrops hit your windshield and the sky goes back to being moody and grey.
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We did have a soggy start to 2026 with some New Year's Day rain, but this week is looking much drier. Humidity is staying low, mostly in the 20% to 30% range. Your hair will look great, but your knuckles might crack.
Survival Tips for the January Forecast
- The Layer Strategy: Wear a t-shirt, a hoodie, and a medium-weight jacket. The casinos are usually cranked to a steady 72°F, so you’ll be stripping layers the second you walk through the sliding glass doors.
- Hydration is Real: Even when it's cool, the air is thirsty. Drink twice as much water as you think you need, especially if you’re indulging in the circular bar scene.
- Footwear: If you're walking the Strip, those "cute" shoes will betray you. With highs in the mid-60s, it's prime walking weather, but the distance between Caesars and MGM is a lot further than it looks on a map.
- Sun Protection: It’s only a UV index of 3 on Monday, but that desert sun is direct. A bit of moisturizer with SPF is basically mandatory.
Actionable Next Steps
Check your hotel’s pool status before you pack the swimsuit; while the weather is beautiful, many outdoor pools close for the season in January, though heated "day clubs" sometimes stay open. If you’re planning on hiking Red Rock Canyon this Monday or Tuesday to catch that 69°F peak, make sure to book your timed entry reservation online at least a day in advance as they fill up fast during these prime-weather windows.