Honestly, if you are standing outside in Phoenix right now, you’ve probably noticed something kind of weird. It’s actually cold. Well, "desert cold," which basically means you need a jacket at 7:00 AM but will be hunting for sunglasses and a t-shirt by lunchtime.
Today is Saturday, January 17, 2026, and the weather Phoenix right now is sitting at a crisp 48°F. It is currently nighttime—or very early morning—and the sky is perfectly clear. There is a tiny bit of a breeze coming from the east at about 2 mph, but otherwise, the air is still. If you’re looking at the stars, you’ve got a great view because the humidity is at 51% and there is absolutely zero chance of rain.
What to Expect for the Rest of Today
Don't let that morning chill fool you. The Valley of the Sun is about to live up to its name. As the sun comes up, we are looking at a high of 76°F. That is basically the "Goldilocks zone" of weather—not too hot, not too cold.
The humidity is going to drop way down to 25% by this afternoon, which is classic Arizona. It’s that "dry heat" people always joke about, but in January, it just feels like a perfect spring day. The wind will pick up slightly to 4 mph from the southeast, so it’s a great day for a hike at Camelback Mountain or just sitting on a patio with a cold drink.
The UV index is hitting a 3 today. It sounds low, but the desert sun is sneaky. Even when it's in the 70s, you can still get a burn if you're out at the Phoenix Zoo or the Desert Botanical Garden for a few hours.
The Weird History of January 17 in Phoenix
Believe it or not, this date has a bit of a "wild child" reputation in local weather history. While we’re enjoying a sunny 76 degrees today, past years have been total chaos.
Did you know it actually snowed in Phoenix on January 17 back in 1987? Imagine seeing saguaros covered in white powder. Even crazier, on this exact day in 1993, an F2 tornado actually touched down in North Scottsdale. Air traffic controllers at the Scottsdale airport watched it rip through neighborhoods. That same year, massive flooding washed away parts of the Mill Avenue bridge.
So, basically, a boring, sunny day like today is something we should actually be pretty grateful for.
Dressing for the "Desert Swing"
If you’re headed out, you have to master the art of the layer. People around here call it "Desert Chic," but really, it’s just survival.
Since it’s 48°F right now but will be 76°F later, you’re going to be playing a constant game of "jacket on, jacket off."
- Early Morning: You need a fleece or a light down jacket.
- Midday: A t-shirt or a light long-sleeve is plenty.
- Evening: Once that sun dips behind the White Tank Mountains, the temp drops fast. Bring that jacket back out.
Honestly, skip the heavy parkas. You won't need them unless you're driving up to Flagstaff to see the snow. For Phoenix, think light sweaters and comfortable walking shoes.
Actionable Tips for Your Day
If you're in town or living the local life, here is how to make the most of the current conditions:
- Hydrate more than you think. With humidity dropping to 25%, your skin and throat will feel it before you realize you’re thirsty.
- Hit the trails early. The low of 48°F is perfect for starting a hike. By the time you reach the summit, the climb will have warmed you up just as the air hits the 60s.
- Check your tires. Big temperature swings (nearly 30 degrees today!) can mess with your tire pressure. If that little light pops up on your dashboard, it’s probably just the cold morning air.
- Outdoor dining is a must. A high of 76°F is prime patio weather. Places in Old Town Scottsdale or Downtown Phoenix will be packed, so maybe grab a reservation.
The weather Phoenix right now is pretty much why everyone moves here in the first place. Enjoy the clear skies and the lack of humidity while it lasts—before the triple digits return in a few months.