Vermont Weather in December Delving into the season of winter in Vermont, December is a time of year characterized by cold temperatures, heavy snowfall, and potential extreme weather events. This period is ideal for skiing, snowboarding, and other winter sports, with many resorts offering excellent conditions.
The state’s geography, including its terrain and proximity to the coast, plays a significant role in shaping the weather patterns during December. The mountains, especially in the western part of the state, receive the heaviest snowfall, while the coastal regions tend to be warmer and more prone to rain.
The Average Temperature Range in Vermont During December
December in Vermont is characterized by cold winter weather, but the temperature can vary significantly depending on the location and elevation. In the mountains, the temperature often drops even lower than in the coastal areas, with average morning temperatures ranging from 10°F (-12°C) to 20°F (-7°C) in the lower elevations and below 0°F (-18°C) in the higher elevations.
In the afternoon, the temperature can rise to around 20°F (-7°C) to 30°F (-1°C) in the lower elevations, but it may not rise above 0°F (-18°C) in the higher elevations. This difference in temperature between the morning and afternoon hours is due to the temperature inversion that often occurs in the mountains.
Differences in Temperature Between Coastal and Inland Areas
As one moves from the coastal areas to the inland areas, the temperature tends to drop. This is because the coastal areas receive the warmth from the ocean, while the inland areas are farther away from the moderating influence of the ocean. In addition, the inland areas often experience colder temperatures due to the presence of cold air from Canada, which can push down to the lower elevation areas. As a result, the coastal areas tend to be milder than the inland areas during the winter months.
For example, Montpelier, the capital city of Vermont, located inland, typically has a colder winter than Burlington, the largest city in Vermont, located on the coast. In December, the average temperature in Montpelier is around 15°F (-9°C), while in Burlington it is around 24°F (-4°C). This difference in temperature is due to the proximity to the lake and the moderating effect of the water on the temperature.
In some cases, the temperature difference between the coastal and inland areas can be significant, with the coastal areas receiving as much as 10°F (5.6°C) to 20°F (11.1°C) warmer temperatures than the inland areas.
Temperature Fluctuations in Areas with Direct Sunlight Exposure
Areas with direct sunlight exposure can experience significant temperature fluctuations during the day. The sun’s radiation can cause the temperature to rise quickly, especially during the afternoon when the sun is at its highest point in the sky. In areas with direct sunlight exposure, the temperature can rise as much as 10°F (5.6°C) to 20°F (11.1°C) within a short period of time.
For example, on a sunny day in December, the temperature in a valley with direct sunlight exposure can rise from 0°F (-18°C) to 20°F (-7°C) within a few hours. This rapid temperature change is due to the direct exposure to sunlight, which can cause the temperature to rise quickly in the afternoon.
In contrast, areas with no direct sunlight exposure, such as areas with dense tree cover or buildings, may experience a more stable temperature throughout the day. The lack of direct sunlight exposure can result in a slower temperature rise, making the temperature more stable and predictable.
Precipitation Patterns in Vermont During December
As winter begins to set in, Vermont experiences a significant increase in precipitation, primarily in the form of snowfall. The state’s geography, with its varied elevations and proximity to the Atlantic Ocean, contributes to a diverse range of precipitation patterns. While some areas receive copious amounts of snow, others experience significant freezing rain and ice.
Types of Precipitation in Vermont
Vermont typically experiences a mix of snowfall, freezing rain, and sleet during December. The type of precipitation that occurs depends largely on the temperature and moisture content of the air. Snowfall is most common in areas with elevations above 500 feet, where temperatures are typically below freezing. Freezing rain, on the other hand, is more common in lower-lying areas, where temperatures are above freezing but air masses from higher elevations can still bring cold air. This can lead to the formation of freezing rain, which can result in hazardous road conditions.
Precipitation Patterns by Region
Vermont can be divided into three main regions when it comes to precipitation patterns: the Green Mountains, the Lake Champlain Valley, and the Northeast Kingdom.
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The Green Mountains:
The Green Mountains are the highest and most rugged region in Vermont, with many areas receiving over 100 inches of snow per year. This is due to their proximity to the Canadian border, which brings cold, moist air into the region. The higher elevations of the Green Mountains receive more snow than lower-lying areas, with some areas seeing over 200 inches of snowfall per year.
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The Lake Champlain Valley:
The Lake Champlain Valley is a more moderate region when it comes to precipitation. This area tends to receive less snow than the Green Mountains, but still sees a significant amount, often in the range of 20-50 inches per year. Freezing rain and sleet are more common in this area, particularly in the lower-lying areas.
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The Northeast Kingdom:
The Northeast Kingdom is the largest and most rural region in Vermont. This area experiences a diverse range of precipitation patterns, but tends to receive less snow than the Green Mountains. However, this area can still see significant snowfall, particularly in areas with elevations above 500 feet.
Factors Contributing to Variability in Precipitation Patterns
Several factors contribute to the variability in precipitation patterns across Vermont, including:
– Elevation: Areas with higher elevations tend to receive more snow than lower-lying areas.
– Proximity to the Atlantic Ocean: The ocean has a moderating effect on climate, with areas closer to the ocean experiencing milder temperatures and more precipitation.
– Temperature: Warmer temperatures tend to result in a greater likelihood of freezing rain, while colder temperatures result in more snow.
– Moisture content of the air: Areas with higher levels of moisture in the air tend to experience more precipitation.
Snow Depths and Frequency in Vermont During December
Vermont is known for its exceptional snow conditions during the winter months, making it a paradise for skiers, snowboarders, and winter sports enthusiasts. The state’s varied landscape, from mountains to valleys, contributes to its unique snow patterns. In this section, we’ll delve into the average snow depths and frequency in different parts of Vermont, highlighting areas with the most consistent snow coverage.
Average Snow Depths in Major Cities and Mountain Resorts
Vermont’s major cities and mountain resorts experience varying levels of snowfall throughout the winter season. Here’s a breakdown of the average snow depths in some of the state’s most popular destinations:
Source: National Weather Service, National Centers for Environmental Information
| Location | Average Snow Depth (Dec) | Days with Snow |
|---|---|---|
| Middlebury | 18-24 inches | 10-15 days |
| Sunderland | 25-30 inches | 15-20 days |
| Stowe | 30-35 inches | 20-25 days |
| Killington | 35-40 inches | 25-30 days |
| Okemo | 30-35 inches | 20-25 days |
Snowmaking Capacity at Major Ski Resorts
Despite the natural snowfall, Vermont’s ski resorts have invested heavily in snowmaking technology to ensure a reliable snow surface. Here’s a breakdown of the snowmaking capacity at some of the state’s most popular ski resorts:
Source: Ski Resorts’ official websites and industry reports
- Stowe Mountain Resort: With over 275 snow guns and a snowmaking system that covers over 600 acres, Stowe Mountain Resort can produce up to 1,000 gallons of water per minute.
- Killington Resort: Killington boasts an impressive snowmaking system that features over 2,000 snow guns and can produce up to 1,200 gallons of water per minute.
- Okemo Mountain Resort: Okemo’s snowmaking system consists of over 400 snow guns and can produce up to 600 gallons of water per minute.
By combining natural snowfall with advanced snowmaking technology, Vermont’s ski resorts can maintain a reliable snow surface throughout the winter season, making it an attractive destination for skiers and snowboarders from around the world.
Sunshine and Cloud Cover in Vermont During December
In December, Vermont experiences a gradual decline in daylight hours and sunshine, as the state’s northernmost location and winter solstice coincide. This decline in sunshine, combined with persistent cloud cover, plays a significant role in shaping the overall climate and temperature in the region.
The combination of sunshine and cloud cover during December in Vermont affects the temperature and climate in several ways. Cloud cover helps regulate the temperature by preventing heat loss through radiation, while sunshine warms the ground and objects, releasing heat through convection. The balance between these two factors determines the overall temperature pattern in the region. For instance, when the cloud cover is high, the temperature tends to be milder, but the lack of direct sunlight can lead to slower snowmelt and more significant snowpack.
Relationship between Cloud Cover and Precipitation
Cloud cover and precipitation are closely linked in Vermont during December. High cloud cover often indicates the presence of moisture-laden air masses, which can lead to increased precipitation. Conversely, areas with low cloud cover are more likely to experience dry spells. Notable regions with significant cloud cover variations in Vermont during December include the Green Mountains, where orographic lifting creates an ideal environment for cloud formation, and the Champlain Valley, where the lake’s moderating influence can reduce cloud cover.
Notable Cloud Formations in Vermont during December
While the ‘Morning Glory cloud’ is rarely seen in Vermont during December, the region’s unique geography creates a variety of cloud formations. For example, the ‘Kelvin-Helmholtz cloud’, characterized by a breaking wave-like shape, often forms when there is a strong temperature gradient between the cold air aloft and the warmer air below. In addition, the ‘Undulatus cloud’, marked by rolling waves, can appear when there is a strong wind shear in the atmosphere. These distinctive cloud formations are often indicative of unstable air masses and can lead to precipitation and other severe weather events.
- The ‘Kelvin-Helmholtz cloud’ forms when there is a strong temperature gradient between the cold air aloft and the warmer air below.
- The ‘Undulatus cloud’ appears when there is a strong wind shear in the atmosphere.
Weather Extremes and Emergency Events in Vermont During December
In Vermont’s winter season, December is known for its harsh and unforgiving climate. The state’s geography and latitude make it prone to significant weather events. Understanding the types of extreme weather events that can occur and the potential impact is crucial for residents and visitors alike.
Type of Extreme Weather Events, Vermont weather in december
Vermont is susceptible to various extreme weather events in December. Some of the most common include:
– Heavy snowfall and blizzards, often accompanied by high winds and low visibility.
– Freezing rain and sleet, which can lead to icy road conditions and power outages.
– Frigid temperatures, potentially dipping below 0°F (-18°C), which can cause hypothermia and frostbite.
– Lake-effect snow, where moisture-laden air from Lake Champlain cools, releasing heavy snowfall in local areas.
These weather events can have severe consequences on various aspects of life in Vermont:
Impact on Transportation and Daily Life
Extreme weather in December significantly impacts transportation and daily life in Vermont. Heavy snowfall, freezing rain, and high winds can:
– Cause road closures and travel restrictions.
– Disrupt public transportation, including buses and rail services.
– Make it challenging for people to commute to work or school.
– Force businesses to close or reduce hours.
– Compromise mail and package delivery services.
Additionally, the severe weather can lead to power outages, affecting homes, businesses, and critical infrastructure.
Impact on Agriculture
The extreme weather conditions in December also affect Vermont’s agriculture industry. The harsh conditions can:
– Damage crops, particularly those still in the early stages of growth.
– Harm or kill trees, bushes, and other plant life.
– Compromise soil health, making it less fertile for future plantings.
– Increase the risk of disease and pest infestations.
– Reduce livestock health, requiring additional care and resources.
Emergency Response Resources and Information
During severe weather events, it’s essential to stay informed and seek help when needed. The following resources are available to the public:
– The Vermont Emergency Management (VEM) website provides critical information on weather events, emergency response, and assistance.
– The National Weather Service (NWS) issues timely forecasts, warnings, and advisories.
– The American Red Cross offers support and guidance for those affected by disasters.
– Vermont’s 2-1-1 service provides phone support for those struggling with the aftermath of a weather event.
Conclusive Thoughts
In conclusion, the weather in Vermont during December is a complex and dynamic phenomenon influenced by various factors. Understanding these patterns is essential for planning activities, traveling safely, and appreciating the unique beauty of the season. By exploring the average temperature range, precipitation patterns, snow depths, sunshine and cloud cover, and weather extremes, you can better prepare yourself for a wonderful winter experience in Vermont.
Essential FAQs: Vermont Weather In December
What is the average temperature range in Vermont during December?
The average temperature range in Vermont during December varies from 14°F to 38°F (-10°C to 3°C), with the coldest temperatures usually occurring in the mountainous regions.
How much snowfall can I expect in Vermont during December?
The snowfall in Vermont during December can range from 1 to 4 feet (30 to 120 cm), depending on the region and weather patterns. The mountains receive the heaviest snowfall, with some areas experiencing over 10 feet (300 cm) of snow during the month.
Are there any specific weather-related concerns I should be aware of during December in Vermont?
Yes, Vermont can experience extreme weather events during December, including blizzards, freezing rain, and high winds. It’s essential to stay informed about weather forecasts and road conditions to plan your activities and travel safely.
