Arizona December Weather Guide

Nick Leason

-Oct 20, 2025

Planning a trip to Arizona in December? This guide covers everything you need to know about the weather across the state, from snowy mountains to sunny deserts.

Key Takeaways

Diverse Climates: Arizona in December offers a wide range of temperatures and conditions, from cold, snowy mountain regions to mild, sunny desert areas.
Northern Arizona: Expect winter conditions with potential snow, especially at higher elevations like Flagstaff and the Grand Canyon.
Central Arizona: Cities like Phoenix and Tucson enjoy mild, pleasant daytime temperatures, ideal for outdoor activities, with cooler evenings.
Key Packing Items: Layers are essential, including warm clothing for the north and lighter options with sun protection for the south.
Popular Activities: December is a prime time for holiday events, hiking, exploring national parks, and enjoying the pleasant desert climate.

Introduction

December in Arizona presents a fascinating paradox of climates. While many associate the state with scorching summer heat, winter brings a different, often more temperate, experience. From snow-capped peaks in the north to sun-drenched desert landscapes in the south, Arizona in December offers a diverse weather tapestry. This guide will navigate you through what to expect, helping you pack appropriately and plan your activities whether you're seeking winter sports or a warm escape.

What is Arizona Weather Like in December?

Arizona's weather in December is characterized by significant regional variations due to its varied topography. The state spans from high mountain elevations to low desert basins, creating distinct microclimates. Generally, December marks the beginning of the cooler, drier winter season for most of the state.

Why is December weather diverse in Arizona?

Elevation: The most significant factor. Higher elevations, like Flagstaff (around 7,000 feet), experience true winter conditions, including snowfall and freezing temperatures. Lower elevations, such as Phoenix and Tucson (around 1,000-2,500 feet), enjoy mild, spring-like weather during the day.
Proximity to Oceans: Arizona is landlocked, but the Pacific Ocean can influence weather patterns, generally leading to drier conditions in winter compared to coastal areas.
Seasonal Patterns: December falls within Arizona's dry season, meaning less rainfall overall, though occasional winter storms can bring precipitation, especially to the northern mountains.

What are the benefits of visiting Arizona in December?

Pleasant Daytime Temperatures: Especially in the southern and central regions, daytime highs are comfortable, perfect for exploring cities, hiking, and visiting attractions without the intense heat of summer.
Fewer Crowds (Generally): Outside of holiday travel periods, December can be less crowded than peak spring or fall seasons, offering a more relaxed experience.
Winter Activities: For those seeking snow, the northern parts of the state provide opportunities for skiing, snowboarding, and enjoying a picturesque winter wonderland.
Holiday Spirit: Many towns and cities embrace the holiday season with festive decorations, events, and markets, adding a unique charm to your visit.

What are the risks or downsides of Arizona weather in December?

Cold in the North: If you're heading to areas like Flagstaff or the Grand Canyon's South Rim, be prepared for freezing temperatures and snow, which can impact travel and outdoor activities.
Variable Conditions: Weather can change rapidly, especially in mountainous areas. Snow can accumulate quickly, leading to road closures.
Holiday Travel Crowds: Around Christmas and New Year's, popular destinations and airports can become very busy and expensive.
Limited Daylight: Days are shorter in December, meaning less time for outdoor exploration compared to summer months.

Arizona Weather by Region in December

Understanding the regional differences is crucial for planning your Arizona December trip. — Are Banks Open Today? Hours & Holiday Guide

Northern Arizona (High Elevation)

Cities like Flagstaff, Williams, and areas around the Grand Canyon (North and South Rims) experience genuine winter weather. Average temperatures can be cold, with daytime highs often hovering around the freezing mark (30s°F), and nighttime lows dropping well below. Snowfall is common, transforming the landscape into a winter scene.

Flagstaff: Expect average highs in the low 40s°F (around 5°C) and average lows in the low 20s°F (around -5°C). Snowfall is likely, with average accumulations varying but often significant enough for winter sports.
Grand Canyon National Park (South Rim): Similar to Flagstaff, with daytime highs in the 40s°F (around 7°C) and overnight lows potentially dipping below freezing. Roads can be icy, and snow is common, sometimes leading to temporary closures of scenic drives or viewpoints.
Sedona: While at a slightly lower elevation than Flagstaff (around 4,500 feet), Sedona also experiences cooler temperatures than the desert cities. Daytime highs are typically in the 50s°F (around 10-12°C), with evenings cooling down considerably, possibly into the 30s°F (-1 to 4°C). Snow is possible but less frequent and usually doesn't accumulate for long.

Central Arizona (Mid-Elevation & Desert Cities)

This region includes the major metropolitan areas like Phoenix and Tucson, as well as popular tourist destinations like Scottsdale and Tempe. December here is characterized by mild, pleasant days and cool nights.

Phoenix Metro Area (including Scottsdale, Tempe, Mesa): Daytime highs average in the mid-60s°F (around 18-20°C), making it ideal for outdoor activities. Evenings and nights can get cool, with lows typically in the 40s°F (around 7-10°C). Rainfall is minimal.
Tucson: Similar to Phoenix, with average daytime highs in the mid-60s°F (around 18°C) and lows in the upper 30s or low 40s°F (around 4-7°C). The Sonoran Desert setting means sunshine is abundant.

Southern Arizona (Low Desert)

Areas further south, like Yuma and parts of the Sonoran Desert closer to the Mexican border, are generally the warmest parts of Arizona in December. They experience desert conditions with very pleasant daytime temperatures. — Salt Lake City Weather Radar: Live Updates & Forecast

Yuma: Known for its warmth, Yuma typically sees average highs in the low 70s°F (around 21-23°C) and lows in the 40s°F (around 7-10°C). It's one of the sunniest places in the US, and December is no exception.

How to Prepare for Arizona's December Weather

Packing and planning correctly can make your Arizona December trip enjoyable, regardless of where you go.

What to Pack

Given the diverse climates, layering is the key strategy. Pack versatile items that can be added or removed as conditions change. — Hollywood, CA ZIP Code: Find Addresses & More

For Northern Arizona (Snowy Regions):

Warm Outerwear: A waterproof and windproof jacket is essential.
Insulating Layers: Fleece or down mid-layers.
Base Layers: Thermal underwear (long johns).
Waterproof Pants: Especially if planning snow activities.
Warm Footwear: Waterproof boots with good traction.
Accessories: Warm hat, gloves, scarf.

For Central and Southern Arizona (Mild Desert Regions):

Light Layers: Long-sleeved shirts, t-shirts.
Sweater or Light Jacket: For cooler evenings and mornings.
Comfortable Walking Shoes: For exploring cities and trails.
Sun Protection: Sunglasses, hat (even in winter, the sun can be strong), sunscreen.
Jeans or Comfortable Trousers.

General Items for All Regions:

Reusable Water Bottle: Crucial for staying hydrated, especially in the dry desert air.
Daypack: For carrying essentials during outings.
Camera: To capture the stunning landscapes.

Planning Your Activities

Check Road Conditions: Especially if traveling to or through Northern Arizona, check ADOT (Arizona Department of Transportation) for real-time road closures and conditions due to snow or ice.
Book Accommodations and Flights Early: December, particularly the latter half, is a popular time for holiday travel. Book well in advance.
Flexibility: Be prepared to adjust your itinerary if weather conditions change unexpectedly, especially in the mountains.
Daylight Hours: Plan outdoor activities for midday when temperatures are warmest and daylight is longest.

Examples and Use Cases

Here are a few scenarios illustrating how December weather impacts travel in Arizona:

Scenario 1: The Winter Wonderland Seeker

Destination: Flagstaff, Grand Canyon National Park (South Rim).
Weather Expectation: Cold, potential snow, daytime highs around 40°F, nighttime lows below freezing.
Activities: Snowshoeing near Flagstaff, visiting the snow-dusted South Rim of the Grand Canyon, enjoying a cozy lodge atmosphere, potentially skiing at Arizona Snowbowl.
Packing Focus: Heavy winter gear, waterproofs, warm layers.

Scenario 2: The Desert Explorer

Destination: Phoenix, Scottsdale, Tucson.
Weather Expectation: Mild and sunny days (60s°F), cool evenings (40s°F).
Activities: Hiking Camelback Mountain or in the Superstitions, exploring the Desert Botanical Garden, visiting museums, enjoying patio dining, driving scenic routes like Apache Trail (weather permitting).
Packing Focus: Layers, comfortable walking shoes, sun protection.

Scenario 3: The Holiday Getaway

Destination: Sedona, combined with Flagstaff or Phoenix.
Weather Expectation: Moderate temperatures (50s°F days in Sedona), cooler evenings, possibility of light snow in Sedona, colder in Flagstaff.
Activities: Experiencing Sedona's stunning red rock scenery in crisp air, enjoying holiday lights and festivals in Phoenix or Flagstaff, visiting local craft markets.
Packing Focus: Versatile layers suitable for both cooler desert and potential mountain chill.

Best Practices and Common Mistakes

To ensure a smooth trip, consider these best practices and avoid common pitfalls.

Best Practices

Check the Forecast Religiously: Weather can be unpredictable. Always check the local forecast a few days before and daily during your trip.
Embrace Layering: This is the single most effective way to stay comfortable across Arizona's diverse December climates.
Stay Hydrated: The air is dry, especially in desert areas. Drink more water than you think you need.
Utilize Midday Sun: Plan strenuous outdoor activities for late morning through mid-afternoon when temperatures are at their peak.
Book Key Attractions: Some popular tours or events might require advance booking, especially around the holidays.

Common Mistakes

Underestimating Northern Arizona Cold: Travelers often assume Arizona is warm year-round and pack only light clothing, leading to discomfort or inability to participate in activities in places like Flagstaff.
Forgetting Sun Protection: Even on cooler days, the Arizona sun can be intense, especially at higher altitudes. Sunburn is possible.
Not Checking Road Conditions: Relying solely on GPS without checking for weather-related road closures in mountain areas can lead to significant delays or missed plans.
Packing Too Much: Aim for versatility rather than a large volume of single-purpose items. Layering reduces the need for bulky, specialized outfits unless engaging in specific winter sports.
Ignoring Evening Temperature Drops: Desert evenings can become quite chilly. Failing to pack a jacket or sweater for nighttime can be uncomfortable.

Frequently Asked Questions (FAQs)

Will it snow in Arizona in December?

Yes, it is highly likely to snow in the higher elevations of Northern Arizona, such as Flagstaff, the Grand Canyon's North and South Rims, and ski resorts like Arizona Snowbowl. Snow is possible but much less common in areas like Sedona and very rare in the desert cities of Phoenix and Tucson.

Is it warm enough to swim in Arizona in December?

Outdoor swimming is generally not comfortable in most of Arizona in December. While Phoenix and Tucson might have heated hotel pools that are enjoyable, the natural bodies of water will be too cold. Daytime temperatures in the desert are pleasant for activities, but not typically warm enough for casual swimming outdoors.

What should I wear for a trip to Phoenix in December?

For Phoenix in December, pack light layers. Think t-shirts, long-sleeved shirts, jeans, and comfortable pants. Bring a light jacket or sweater for the evenings and mornings, as temperatures can drop into the 40s°F. Comfortable walking shoes are a must.

Can I hike in Arizona in December?

Hiking is excellent in many parts of Arizona in December. The desert areas around Phoenix, Tucson, and Sedona offer comfortable temperatures for daytime hikes. In Northern Arizona, hiking is possible, but trails may be snow-covered or icy, requiring appropriate gear and caution. Always check trail conditions and weather forecasts before heading out.

How much does it typically rain in Arizona in December?

December is generally part of Arizona's dry season. Rainfall is typically low across the state. Northern mountainous areas might receive precipitation in the form of snow, while the desert regions usually experience dry conditions with minimal rainfall. Average precipitation is usually less than an inch for most areas.

Is the Grand Canyon open in December?

Yes, the Grand Canyon National Park South Rim is open year-round, including in December. However, weather conditions can affect access. Snow and ice can make roads and trails hazardous or temporarily closed. The North Rim typically closes to regular vehicle traffic from mid-October to mid-May due to heavy snowfall, so only the South Rim is reliably accessible for most visitors in December.

Conclusion

Arizona in December offers a unique duality: a winter wonderland in its northern reaches and a mild, sunny paradise in its southern deserts. By understanding these regional variations and preparing with appropriate clothing and flexible plans, you can fully embrace the distinct charms this state has to offer during the winter month. Whether you're seeking snow-capped adventure or a warm escape from the cold, Arizona delivers a memorable December experience.

Ready to plan your Arizona December adventure? Book your flights and accommodations now to secure the best options for your trip!

Last updated: December 21, 2023, 00:00 UTC