Weather In December In Nyc

Decoding December in NYC: A Comprehensive Guide to the City's Winter Weather

December in New York City paints a picture of a classic winter wonderland, often romanticized in films and literature. However, the reality of New York's December weather is more nuanced than a simple "cold and snowy." This comprehensive guide will delve into the specifics of the city's December climate, preparing you for anything from a blizzard to a surprisingly mild day. Understanding the weather patterns will help you pack appropriately, plan your activities, and fully appreciate the unique charm of the Big Apple during the holiday season. This article covers average temperatures, precipitation, snowfall, and provides valuable tips for navigating the December weather in NYC.

Understanding December's Average Temperature and Weather Patterns

December in NYC marks the full onset of winter, with temperatures consistently dipping below freezing. The average high temperature hovers around 37°F (3°C), while the average low plummets to 27°F (-3°C). These are just averages, however, and daily fluctuations are common. You might experience a surprisingly mild day with temperatures reaching the high 40s°F (around 8°C), or a brutally cold day where the temperature struggles to climb above freezing.

The weather in December is largely influenced by the polar jet stream, a fast-flowing, narrow air current in the upper atmosphere. When this jet stream dips south, it brings frigid Arctic air into the northeastern United States, resulting in significantly colder temperatures and potentially severe winter storms. Conversely, a more northerly jet stream can lead to milder weather with less extreme cold.

Beyond temperature, December sees a significant decrease in daylight hours. The days are noticeably shorter, with sunrise typically around 7:00 AM and sunset around 4:30 PM. This shorter daylight period contributes to the overall feeling of winter's chill.

Precipitation and Snowfall: What to Expect in December

While December is known for its potential for snowfall, it's crucial to remember that the amount of snowfall is highly variable from year to year. The average snowfall for December in NYC is around 8 inches (20 cm). However, some years might see significantly less, while others experience several major snowstorms, totaling much more.

Precipitation, in general (including rain and snow), is relatively frequent in December. The average precipitation in December is around 3.5 inches (9 cm). While a significant portion of this will likely be snow, especially in the latter half of the month, rain showers are also possible, especially during milder periods. The combination of snow, rain, and freezing temperatures can lead to icy conditions, making sidewalks and roads treacherous.

Navigating the December Weather: Practical Tips and Preparations

Preparing for December weather in NYC is key to a pleasant and safe experience. Here are some practical tips:

• Pack Layers: This is paramount. Dress in layers to easily adjust to changing temperatures throughout the day. Start with thermal underwear, followed by a sweater or fleece, then a warm jacket. Don't forget a hat, gloves, and a scarf. Waterproof outerwear is also essential to protect against snow and rain.

• Choose the Right Footwear: Sturdy, waterproof boots with good traction are crucial. Icy conditions are common, so choose boots with a non-slip sole.

• Utilize Public Transportation: Navigating snowy and icy streets can be challenging. Public transport is generally well-maintained and a reliable option during winter weather.

• Check the Forecast Regularly: The weather in NYC can change rapidly. Stay informed by checking the forecast regularly through reputable sources.

• Be Aware of Windchill: The wind can significantly lower the perceived temperature, making it feel much colder than the actual temperature. Factor this into your clothing choices.

• Plan for Potential Delays: Snowstorms can cause significant delays in transportation, so factor in extra travel time, especially if you're traveling to or from the airports.

• Stay Hydrated: Cold weather can dehydrate you easily. Make sure to drink plenty of fluids throughout the day.

December Events and Activities: Embrace the Holiday Spirit

Despite the cold, December in NYC offers a plethora of festive activities. The city transforms into a winter wonderland, with iconic holiday markets, dazzling light displays, ice-skating rinks, and numerous holiday-themed events. However, be prepared for crowds, especially during peak holiday weekends.

• Holiday Markets: Numerous markets pop up throughout the city, offering unique gifts, delicious treats, and a vibrant atmosphere.

• Ice Skating Rinks: Several outdoor ice-skating rinks open throughout the city, providing a festive and fun activity.

• Window Displays: Many department stores put on extravagant holiday window displays, transforming their shopfronts into magical spectacles.

• Holiday Light Shows: Various locations throughout the city are decked out with dazzling light displays.

• Broadway Shows: Broadway is in full swing during December, offering a great escape from the cold.

Scientific Explanation of NYC's December Weather

The prevailing weather patterns in NYC during December are largely dictated by the position of the polar jet stream, as mentioned earlier. This powerful river of air high in the atmosphere steers weather systems. When the jet stream dips southward, cold Arctic air masses are drawn down into the northeastern US, causing significant temperature drops and the potential for snowfall.

The lake-effect snow phenomenon can also contribute to snowfall in NYC, although less directly than in areas closer to the Great Lakes. When cold, dry air masses move over relatively warm lake waters, the air picks up moisture and becomes unstable. As this air rises and cools over land, it can produce significant snowfall. This effect is often more pronounced in areas downwind of the Great Lakes, but can still contribute to snowfall events in the NYC area.

The Atlantic Ocean also plays a role, though less prominent than the polar jet stream and lake effect. Depending on the water temperature and atmospheric pressure systems, it can contribute to milder temperatures or influence the track of storms.

Frequently Asked Questions (FAQ)

Q: What's the coldest temperature I can expect in December in NYC?

A: While the average low is 27°F (-3°C), temperatures can occasionally dip well below freezing, reaching the teens or even single digits Fahrenheit (-10°C to -18°C) during particularly cold snaps.

Q: How much snow should I expect?

A: The average snowfall is around 8 inches (20 cm), but this varies significantly from year to year. Some Decembers see little to no snow, while others experience substantial accumulations.

Q: Is it worth visiting NYC in December?

A: Absolutely! Despite the cold, December offers a unique and magical experience, with festive holiday markets, stunning light displays, and a cozy atmosphere. Just be prepared for the weather!

Q: What should I wear?

A: Layers are key. Warm, waterproof boots, a warm hat, gloves, scarf, and a waterproof outer layer are all essentials. Consider thermal underwear for extra warmth.

Conclusion: Embrace the Magic of a NYC December

December in NYC presents a unique blend of challenges and rewards. While the weather can be cold and unpredictable, the city's festive atmosphere and numerous holiday attractions make it a memorable time to visit. By understanding the average temperatures, potential snowfall, and taking appropriate precautions, you can fully embrace the magic of a NYC December, creating unforgettable memories amidst the winter wonderland. Remember to check the weather forecast regularly, pack accordingly, and enjoy the unique charm of the Big Apple during the holiday season.