Cozy
Cable Knit and Mules
A grey cable knit with fleece-lined leggings and black mules in warmer weather is cozy without capitulating to the temperature. A knit beanie on a warm-clear day feels like a choice.
What to Wear in Mesa in December
December in Mesa is mild and sunny, with highs averaging 67°F and lows near 45°F — the most comfortable outdoor month in the Sonoran Desert. Light layers and a medium-weight jacket for evenings handle the range from cool mornings along the Riverview Park lakeside trails to warm afternoons in the Mesa Arts Center district. With only about 3 rainy days, December is one of Mesa's driest and most reliably clear months of the year.
What to wear
top / Short-Sleeve Top
classic tee
bottom / Jeans
straight-leg
chinos for a slightly smarter look
footwear / Sneakers
classic sneakers
cushioned for all-day city walking
Consider bringing:
Sunglasses
Based on typical December conditions in Mesa. Weather varies year to year — check the live forecast when you're within two weeks of your trip.
Mesa's December is the payoff for enduring the summer heat — clear blue skies, daytime temperatures in the upper 60s, and dry desert air that makes the warmth feel genuinely pleasant rather than oppressive. The Tonto National Forest to the northeast, Salt River Recreation Area, and the Red Mountain Amphitheater area are all at their hiking and outdoor peak: cool mornings, warm afternoons, and no monsoon mud. About 3 rainy days represent nearly all of December's moisture, making it one of the Valley of the Sun's most reliably clear months. The local style tendency runs outdoor-casual with a resort-adjacent edge — lightweight chinos or dark jeans paired with a flannel or light merino sweater handle the 22°F gap between 45°F mornings and 67°F afternoons. A medium jacket works for evenings at the Mesa Arts Center or the Dobson Ranch area's dining scene. Visitors from colder climates sometimes over-dress for morning temperatures and then overheat by noon; layers that pack into a day bag are the practical solution.
Curated Looks
Business Casual
Mauve Happy Hour
At 65–74°F the mauve tie-front cropped linen shirt earns its place over ivory wide-leg linen trousers. Ivory pointed-toe mules and aviator sunglasses make the commute feel like an editorial moment.
Casual
Bright, Blue, and Breezy
Embrace the 65–74°F sunny weather with a breathable linen shirt, classy bermuda shorts, and espadrilles. Pair it with a class bucket bag for that summer ready look.
Chic
White Shirt Wide-Leg
A white oversized button-down with ivory wide-leg linen trousers and a brown woven belt is the warm-clear uniform for someone who doesn't overthink it. Black mule heels are the one decisive choice.
Sporty
Biker Shorts Graphic Tee
A black graphic tee over biker shorts with mule heels is the warm-day sporty look that works from coffee to casual. The olive baseball cap adds a directional touch.
Formal
Ivory and Pleated Maxi
An ivory silk-look blouse tucked into a black pleated maxi skirt is the warm-clear formal look with evening flexibility. Espadrilles and a black mini bag make it daytime without losing the occasion feel.
Cute
Floral Skirt and Mules
A floral pleated midi skirt with a white fitted tank and black mules reads warm-day dressed-up without veering formal. A crochet bucket hat shifts the mood back to weekend.
Other Months in Mesa
Frequently Asked Questions
What should I wear in Mesa in December?+
Light-to-medium layers cover the full daily range. A medium-weight jacket or fleece handles the 45°F mornings at Tonto National Forest trailheads or along the Riverview Park lakeside paths. By afternoon at 67°F, a light long-sleeve or sweater is comfortable on its own. Dark jeans or lightweight chinos and comfortable walking shoes or trail runners work for both the Mesa Arts Center area and the outdoor trail systems.
Is December a good time to visit Mesa?+
December is one of Mesa's most popular visitor months. The weather is ideal for outdoor activities — Tonto National Forest, the Salt River Recreation Area, and the Red Mountain trails are all comfortably accessible without summer heat. The i.d.e.a. Museum and the Arizona Museum of Natural History provide excellent indoor options. Snowbirds and Arizona State University's winter break activity overlap in December, so accommodations book quickly and prices reflect the season.
What shoes are best for Mesa in December?+
Trail runners or comfortable walking shoes handle Mesa's December terrain well — the Tonto National Forest trails, Salt River Recreation Area paths, and the walkable downtown Mesa Arts Center district all suit a versatile athletic shoe. Sandals remain viable for dry afternoons around the Riverview Park area. Rain is rare enough in December that waterproofing is not a significant concern; grip and comfort on desert trail surfaces matter more.
How cool does it get in Mesa in December?+
Morning lows average 45°F — noticeably cool in the dry desert air, especially before the sun clears the horizon. Daytime highs reach 67°F, and the dry air makes the afternoon warmth feel distinctly pleasant. Overnight temperatures occasionally dip into the upper 30s during strong cold air intrusions from the north, but these events are brief. The daily temperature swing of 20°F+ is one of Mesa's most characteristic December features, rewarding the layering approach.
What should I pack for Mesa in December?+
Pack light-to-medium layers: a medium-weight jacket for mornings and evenings, light long-sleeves and a fleece or sweater for transition periods, and breathable pieces for the 67°F afternoons. Trail runners or comfortable walking shoes are essential for the desert trail systems. Sunscreen and sunglasses are necessary year-round in Arizona — December UV index stays elevated even as temperatures are comfortable. A day bag holds the layers you shed by midday.