Delving into weather in Las Vegas in December, this month showcases a wide range of weather patterns, making it an exciting time to visit the city. From warm winter days to chilly nights, the temperature fluctuations in Las Vegas during December are substantial and quite intriguing.
The first week of December is often mild with average highs reaching the mid-50s to low 60s (13-18°C), while the following weeks see a considerable drop in temperature, with highs ranging from the mid-40s to low 50s (7-13°C). These temperature fluctuations are due to the city’s unique geography, where the valley floor is significantly warmer than the surrounding mountains. In addition to these temperature variations, Las Vegas also experiences a unique phenomenon known as a “cold dome” effect, where a prolonged period of cold air settles over the city.
What are the average high and low temperatures in Las Vegas in December?
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December is one of the cooler months in Las Vegas, with comfortable temperatures perfect for outdoor activities such as hiking and sightseeing. The average high temperature in Las Vegas in December is around 58°F (14°C), while the average low temperature is around 41°F (5°C). These temperatures make December an excellent time to visit if you want to enjoy the outdoors without the sweltering heat of the summer months.
Temperature Fluctuations Over the Course of the Month
The temperature in Las Vegas in December fluctuates throughout the month due to various weather patterns. At the beginning of the month, the temperatures are relatively cool, with average highs in the mid-50s. As the month progresses, the temperatures gradually rise, reaching average highs in the upper 50s by mid-December. However, by the end of the month, the temperatures drop back down to the lower 50s, making it an excellent time to bundle up.
- Early December: The temperatures are relatively cool, with average highs in the mid-50s and lows in the lower 40s.
- Mid-December: The temperatures gradually rise, reaching average highs in the upper 50s and lows in the mid-40s.
- End of December: The temperatures drop back down, with average highs in the lower 50s and lows in the lower 40s.
Temperature Variations Between Northern and Southern Parts of the Valley
The temperature varies between the northern and southern parts of the valley in December. The northern part of the valley tends to be cooler than the southern part, especially at night. This is due to the influence of the surrounding mountains, which can block warm air from the south and create a temperature difference. However, during the day, the southern part of the valley tends to be warmer than the northern part.
Northern Part of the Valley:
* Average high temperature in December: 56°F (13°C)
* Average low temperature in December: 42°F (6°C)
Southern Part of the Valley:
* Average high temperature in December: 60°F (16°C)
* Average low temperature in December: 46°F (8°C)
Influence of Climate Change on Temperature Trends in Las Vegas Winters
Climate change has a significant impact on the temperature trends in Las Vegas winters, particularly in December. Studies have shown that the average temperature in Las Vegas has risen by about 0.5°F (0.3°C) per decade over the past 50 years. This warming trend is attributed to global warming caused by the increase in greenhouse gases in the atmosphere, which trap heat and lead to rising temperatures. As a result, winters in Las Vegas are becoming milder, with fewer days below freezing and more days above 50°F (10°C).
Changes in Temperature Trends:
* Average temperature increase per decade: 0.5°F (0.3°C)
* Number of days below freezing: Decrease of 1-2 days per decade
* Number of days above 50°F (10°C): Increase of 1-2 days per decade
How does the weather in Las Vegas in December affect outdoor activities
Outdoor activities in Las Vegas, such as hiking, biking, and exploring, are significantly impacted by the weather in December. While temperatures are generally mild, there are potential risks and considerations to keep in mind.
In December, Las Vegas typically experiences moderate temperatures, ranging from 45°F to 63°F (7°C to 17°C). However, occasional cold fronts can bring temperatures down, sometimes below freezing. The city’s elevation and proximity to mountains also contribute to unpredictable weather patterns. These conditions make it essential to plan outdoor activities with caution and preparedness.
Affordability of Hiking and Biking in December Weather
Hiking and biking can be enjoyed in Las Vegas during December, but it’s crucial to choose trails and routes that are less prone to snow and ice. Desert trails, such as Red Rock Canyon and Mount Charleston, typically have less snow and are more suitable for these activities. However, trails at higher elevations, like those in the Spring Mountains, may be impacted by snow and ice. It’s essential to check current conditions and forecasts before heading out.
For hiking and biking in December, consider the following:
– Choose trails with minimal elevation gain, as these are less likely to be affected by snow and ice.
– Opt for desert trails, which tend to be drier and safer.
– Wear layers of breathable clothing to regulate body temperature.
– Bring sunscreen, a hat, and sunglasses to protect against the sun’s strong rays.
– Consider renting gear, such as bikes or hiking poles, if you don’t own them.
Staying Safe in Cold and Potentially Snowy Weather, Weather in las vegas in december
Staying safe while engaging in outdoor activities in Las Vegas during December requires attention to the following:
– Dress in layers to adjust to changing temperatures and wind.
– Wear warm, waterproof clothing, including gloves and a hat.
– Bring extra layers, a first aid kit, and a map in case of an emergency.
– Inform a friend or family member of your planned route and estimated return time.
– Be aware of potential hazards like icy trails and fast-moving vehicles.
– Keep an eye on weather forecasts and alerts to stay up-to-date on conditions.
– Know the signs of hypothermia and frostbite, and take action if you or someone with you experiences symptoms.
Managing Winter Weather Risks
To ensure a safe and enjoyable outdoor experience in Las Vegas during December, consider the following:
– Check the weather forecast before heading out and adjust your plans accordingly.
– Choose trails and routes that are less prone to snow and ice.
– Bring necessary gear and supplies, such as sunscreen, gloves, and a map.
– Stay hydrated and energized with snacks and water.
– Be cautious of potential hazards like black ice and fast-moving vehicles.
– Keep an eye on local weather alerts and stay informed about conditions.
Types of Precipitation in Las Vegas in December

December in Las Vegas is a winter month characterized by mild temperatures, sunny skies, and rare precipitation events. However, when rain or snow does occur, it often comes in short bursts, causing localized flooding and disruptions to outdoor activities.
Frequency and Intensity of Storms
Las Vegas typically experiences a low frequency of storms in December, with an average of 2-3 days per month receiving precipitation. These storms are often short-lived, lasting between 1-3 hours, and may produce light to moderate rainfall. The average annual snowfall in Las Vegas is approximately 1-2 inches, and December is usually one of the few months where snowfall is measurable. However, it’s rare for snow to accumulate on the ground.
- Rain is the most common type of precipitation in Las Vegas during December, accounting for around 70-80% of all precipitation events.
- Rainfall is often light to moderate, with most events receiving less than 0.1 inches of rainfall.
- Snowfall is rare, but can occur when cold fronts move through the area, often resulting in a mix of rain and snow.
- Freezing rain and freezing drizzle are less common but can occur when cold air moves into the area and temperatures are near or below freezing.
- Thunderstorms are rare in Las Vegas during December, as the atmosphere is generally too dry to support significant updrafts.
Preparing for Common Winter Weather Hazards
While precipitation events are rare in Las Vegas, it’s essential to be prepared for winter weather hazards. Flooding can occur quickly, especially in areas with heavy rainfall or snowmelt. Power outages can also occur due to strong winds or ice accumulation on power lines. Here are some tips to help you prepare:
- Stock up on emergency supplies, including non-perishable food, water, and first aid kits.
- Keep a battery-powered radio and extra batteries on hand in case of a power outage.
- Have a plan in place for alternative heat sources, such as a portable generator or fireplace.
- Clear your gutters and downspouts regularly to ensure proper water flow and prevent ice dams.
- Consider investing in a snow blower or plow for your driveway or walkway.
Managing Common Winter Weather Hazards
In the event of a winter weather hazard, follow these steps:
- Monitor weather forecasts and warnings closely to stay informed about potential hazards.
- Keep a safe distance from flooded areas, as rapid water flow can be hazardous.
- Avoid downed power lines and report them to your utility company immediately.
- Use alternative heat sources carefully, following manufacturer instructions to avoid carbon monoxide poisoning.
- Stay indoors during severe weather, and avoid traveling unless absolutely necessary.
Lesser-known facts about the weather in Las Vegas in December
The city of Las Vegas is known for its sunny and warm climate year-round, but December is one of the driest and coldest months of the year. While the temperatures are generally mild, there are some lesser-known facts about the weather in Las Vegas in December that are worth exploring.
The “Cold Dome” Effect
A “cold dome” refers to a prolonged period of cold weather that settles over a region due to a combination of atmospheric and geographical factors. In Las Vegas, this can occur when a high-pressure system sets up over the region, causing the air to sink and compress, leading to a temperature drop. This phenomenon is known as the “cold dome” effect. One study found that in the winter months, Las Vegas experienced a notable cold dome effect, resulting in temperatures 5-10°F (3-6°C) lower than average. This cold dome can last for several days, causing temperatures to plummet into the 40s and 50s (7-15°C) at night.
- This phenomenon can occur when a high-pressure system sets up over the region, causing the air to sink and compress.
- The cold dome effect can last for several days, causing temperatures to plummet into the 40s and 50s (7-15°C) at night.
- This can lead to increased fog formation in the early morning hours as the cold air collides with the warm ground and vegetation.
The “Santa Ana Wind” Event
The “Santa Ana wind” is a hot and dry wind that blows from the Santa Ana Mountains into the Los Angeles Basin, but it can also affect Las Vegas. This wind can bring extremely hot temperatures, often 10-20°F (6-11°C) higher than average, and can also lead to a rapid increase in fire danger due to the dry conditions. In Las Vegas, this wind can occur when a high-pressure system sets up over the region, causing the air to sink and compress, leading to an increase in temperature and wind speed.
- The Santa Ana wind can bring extremely hot temperatures, often 10-20°F (6-11°C) higher than average.
- This wind can also lead to a rapid increase in fire danger due to the dry conditions.
- The Santa Ana wind can occur when a high-pressure system sets up over the region, causing the air to sink and compress.
The Impact of the Jet Stream
The jet stream is a fast-moving band of air that flows from west to east across the Northern Hemisphere. In Las Vegas, the jet stream can play a significant role in shaping the weather patterns, especially during the winter months. The jet stream can cause extreme temperature fluctuations, with temperatures rising and falling by 20-30°F (11-17°C) in a short period of time. This can lead to sudden changes in weather conditions, including rapidly increasing clouds, rain, and even snow.
- The jet stream can cause extreme temperature fluctuations, with temperatures rising and falling by 20-30°F (11-17°C) in a short period of time.
- This can lead to sudden changes in weather conditions, including rapidly increasing clouds, rain, and even snow.
- The jet stream can also cause a shift in the position of the polar jet, leading to changes in the trajectory of storms and the associated precipitation.
According to the National Weather Service, the jet stream can be up to 200 miles (320 km) wide in certain regions, making it a significant player in shaping the weather patterns.
Last Point

In conclusion, Weather in Las Vegas in December presents a dynamic and unpredictable experience, perfect for those who love adventure and the great outdoors. By understanding the unique weather patterns and temperature fluctuations of this time of year, visitors can plan their activities accordingly and make the most of their trip to Las Vegas.
As the festive atmosphere takes over the city, holiday celebrations and traditions create a magical setting for visitors to enjoy. So, if you’re planning a trip to Las Vegas in December, get ready for the ultimate holiday experience!
Expert Answers: Weather In Las Vegas In December
Is it warm enough for outdoor activities in Las Vegas in December?
Yes, the first week of December is usually mild enough for outdoor activities like hiking and biking, but as the month progresses, the temperatures drop, and visitors should be prepared for chilly conditions.
Are there any holidays or special events in Las Vegas in December?
Yes, Las Vegas is known for its festive atmosphere during the holiday season, with numerous events, parades, and attractions like the Winter Wonderland and the Ethel M Chocolate Factory’s Candy Cane Lane.