So, you're looking at the las vegas weather 10 day forecast and thinking about packing your favorite swimsuit and a pair of flip-flops. Honestly, stop right there. If you're heading to the Mojave in late January, specifically starting this Sunday, January 18, 2026, you're walking into the coldest stretch of the year.
Most people see "desert" on a map and assume it’s a non-stop sauna. It isn't. Not right now.
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The current situation is actually kinda deceptive. Today, we're looking at a high of 63°F with a lot of cloud cover. It feels alright while the sun is up, but once that giant orange ball dips behind the Spring Mountains, the temperature is going to crater to 42°F. That is a 21-degree swing. If you're standing on a bridge over Las Vegas Blvd in a t-shirt at 8 PM, you’re going to be miserable.
The 10-Day Reality Check
Let's get into the weeds of what the next week and a half actually looks like. We aren't talking about "maybe" weather here; the data from Google Weather is pretty clear. Monday, January 19, is looking like the "warm" outlier with a high of 69°F and plenty of sun. It's basically the perfect day for a stroll through the Bellagio Conservatory to see the Lunar New Year display.
But don't get used to it.
By Tuesday and Wednesday (Jan 20-21), things settle back into a pattern of highs around 63°F and 64°F. The lows stay stubborn at 40°F. Basically, the desert air has zero insulation. It doesn't hold onto the day's heat.
The back half of the week gets even more interesting. We're looking at a chance of light rain on Friday, January 23. It’s not a monsoon, but a 35% chance of rain at night when it’s 44°F is enough to turn a night out at Fremont Street into a damp, chilly mess. Saturday clears up back to 66°F, but the dampness might linger in the air.
Las Vegas 10-Day Forecast At A Glance
- Sunday (Jan 18): 63° / 42° (Mostly cloudy)
- Monday (Jan 19): 69° / 43° (Sunny and crisp)
- Tuesday (Jan 20): 64° / 40° (Partly sunny)
- Wednesday (Jan 21): 63° / 40° (Cloudy)
- Thursday (Jan 22): 65° / 44° (Grey skies)
- Friday (Jan 23): 64° / 44° (Watch for evening rain)
- Saturday (Jan 24): 66° / 44° (Clear skies return)
- Sunday (Jan 25): 65° / 44° (Mostly sunny)
- Monday (Jan 26): 67° / 45° (Partly sunny)
- Tuesday (Jan 27): 69° / 47° (Warming trend starts)
Why "Dry Cold" is a Total Lie
You’ve probably heard people say, "It’s a dry heat," to justify 115-degree summers. Well, people also say "it's a dry cold" for January.
Here is the truth: dry cold is brutal on your skin and your lungs. Without humidity to act as a buffer, the wind—even a light 5 mph breeze from the North—cuts right through cotton. If you’re planning to do the Sin City Classic or head to the World of Concrete expo later this month, you’ll be walking between massive convention halls. That wind tunnel effect between the high-rise hotels is real.
Also, the sun sets early. By 5 PM, the "day" is over.
If you're out hiking Red Rock Canyon—which is spectacular this time of year—remember that the canyon floor loses light even earlier. The temperature drops faster in the shadows of the red rocks than it does on the Strip.
Packing Like a Pro (Not a Tourist)
If I see one more person in a parka and shorts, I'm going to lose it.
Actually, no, I get it. The weather is confusing. Inside the casinos, it's a steady 72°F. Outside, it's 45°F. Your body doesn't know what to do. The move is layers. Always layers. A light puffer jacket or a decent hoodie under a denim jacket usually does the trick for most Vegas winter nights.
- Moisturizer and Lip Balm: The humidity is hovering around 22-27%. Your face will feel like parchment paper within 48 hours if you don't hydrate.
- Comfortable, Closed-Toe Shoes: Save the strappy heels for the club entrance. You’ll be walking miles.
- Sunscreen: Yes, even in January. The desert sun is intense, and the UV index will still hit 3 most days.
Is the Pool Even an Option?
Sorta.
Most "day clubs" are closed. However, spots like Circa’s Stadium Swim are specifically built for this. They keep the water at 94 degrees. It’s actually pretty wild to sit in a hot pool while it’s 55 degrees out, watching a game on a massive screen. Most major resorts like the Wynn or Caesars will have at least one heated pool open year-round, but don't expect the full "Vegas Pool Party" vibe. It's more of a "quiet soak" situation.
Actionable Tips for Your Trip
- Check the wind: If the forecast says northwest winds over 10 mph, add "feels like" subtractors to the temperature. 50°F with wind feels like 40°F in the desert.
- Book indoor activities for late afternoon: Schedule your shows (like the Backstreet Boys at the Sphere or David Spade) for after 5 PM so you aren't stuck wandering outside when the sun drops.
- Convention Watch: SHOT Show and World of Concrete are massive. If your 10-day window overlaps with these (Jan 20-23), expect ride-share prices to spike regardless of the weather.
- Hydrate: Drink twice as much water as you think you need. The dry air sucks the moisture out of you before you even realize you're thirsty.
Bottom line? Enjoy the lack of sweat. This is the only time of year you can walk the Strip without feeling like you're melting into the sidewalk. Just bring a jacket. Seriously.