Last updated: February 24, 2025
December in Aspen, United States, unveils a breathtaking winter wonderland, characterized by a maximum temperature of 7°C (45°F) and an unsettling average low of -9°C (15°F). The month experiences a chilly minimum temperature plummeting to -29°C (-20°F), inviting adventurers to embrace the cold. With a total precipitation amount of 65 mm (2.6 in) over approximately 12 days, the air remains crisp and invigorating, complemented by a humidity level of 89%. This climatic blend sets the perfect stage for winter sports enthusiasts and captures the essence of a quintessential mountain retreat.
In December, Aspen, United States, experiences a serious chill as temperatures dip to a minimum of -29°C (-20°F) and only rise to an average of -9°C (15°F). This month marks the transition into the harshest winter conditions, reflected in the maximum temperature settling at a modest 7°C (45°F). Comparing December to the preceding months, one can see a consistent drop in temperatures, particularly from the mild average of -6°C (22°F) in November, highlighting a significant seasonal shift. The sharp decline in both minimum and average temperatures underscores Aspen's reputation as a winter wonderland, perfect for snow sports but necessitating warm attire for outdoor activities.
In December, Aspen experiences a notable shift in its precipitation patterns, receiving an average of 65 mm (2.6 inches) over the month, typically spread across 12 days. This marks a significant increase from November's 52 mm (2.1 inches), suggesting a transition towards a wetter winter season. As temperatures drop and snow begins to blanket the landscape, December's precipitation is not only vital for the ski season but also sets the stage for the heavier snowfall that January and February often bring. This gradual escalation in rainfall enhances the region’s winter charm, transforming Aspen into a picturesque winter wonderland just in time for the holiday festivities.
In December, Aspen experiences a notable rise in humidity, reaching 89%, the highest level of the year. This increase contrasts sharply with the summer months, where humidity dips to its lowest point at 52% in July. As the seasons transition, moisture levels gradually climb from 66% in May to 82% in November, before peaking in December. This trend highlights the winter season's chilly embrace, making Aspen not only a winter wonderland but also a month marked by the crisp, refreshing air that characterizes its snowy landscapes. As the year closes, residents and visitors alike can feel the invigorating humidity that enhances the picturesque charm of this mountainous retreat.
In December, Aspen's UV Index returns to a moderate level of 4, similar to the beginning of the year, indicating a gradual decline after a peak in the spring and summer months where ultraviolet exposure reached extreme heights, particularly during June and July. With a burn time of 30 minutes, December presents a relatively safe opportunity for outdoor activities, encouraging residents and visitors alike to enjoy the winter landscape while staying mindful of sun safety. Notably, the UV Index consistently decreases from the extremes of the warmer months, reflecting the importance of adapting protection strategies throughout the year. For more detailed insights on UV exposure, check out the Aspen UV Index.
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December in Aspen marks the gradual transition from the vibrant fall months to the crisp embrace of winter. With 226 hours of sunshine, it's a time when the days are shorter, yet the beauty of the snow-covered landscape shines brightly. This month's sun reflects a consistent pattern seen throughout the year, where sunlight peaks in late spring and summer, particularly in May and June, with each boasting over 360 hours. As the year closes, December's sunshine still plays an essential role, hinting at the promise of winter adventures ahead, while contrasting with the depth of light experienced in the peak summer months. The steady decline in sunlight hours from fall into winter illustrates nature's rhythm, inviting both relaxation and excitement for the ski season.
In Aspen, December typically brings a 49% chance of sunny weather, making it a somewhat mixed month in terms of sunshine. As we move from autumn into winter, the likelihood of sunny days slightly drops compared to the previous months. Notably, December's sunshine odds stand in contrast to the peak of summer, where August boasts a generous 67% chance of sun. Following a trend, this winter month offers more sunshine than the colder January and February, which have chances falling to 45% and 36%, respectively. Overall, December provides a balanced opportunity for those seeking both winter sports and sunny skies.
As the seasons shift in Aspen, the December days offer only 9 hours of daylight, mirroring the earlier months of winter. This decline in sunlight, beginning from the 14 hours experienced in the heights of summer, highlights a distinct trend of diminishing daylight as the year draws to a close. Each month, from January to November, showcases a gradual increase in daylight, peaking in June, July, and August at 14 hours. Following that peak, a slow descent into shorter days sets in, culminating in December's early sunsets. The cyclical nature of daylight in Aspen paints a vivid picture of the transition through the year, inviting residents and visitors alike to embrace the serene beauty of winter under its shorter, softer skies.
In December, Aspen experiences a slightly elevated average wind speed of 2.3 m/s (5 mph), reflecting a common trend where the early winter months tend to see a slight uptick in breezy conditions. This increase follows a pattern established in the fall, where November and October both recorded a steady 2.0 m/s, while the preceding months maintained a gentle breeze throughout the year. Although July typically experiences the lowest wind speed at 1.8 m/s (4 mph), the overall consistency in wind patterns suggests an inviting atmosphere for those seeking both winter sports and the serene beauty of the snow-capped landscapes. As the year closes, December's winds add a crispness to the air, enhancing the charm of this picturesque mountain town.
The weather in Aspen changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Aspen and find detailed weather information for every month.
December and January exhibit quite similar weather patterns, though January tends to be slightly colder. In December, temperatures range from a minimum of -29°C (-20°F) to a maximum of 7°C (45°F), with an average of -9°C (15°F). Precipitation is relatively moderate, with 65 mm (2.6 inches) over 12 days and humidity at a high 89%. Conversely, January sees a slightly warmer average temperature of -9°C (16°F) but a lower maximum of 5°C (42°F) and a minimum of -23°C (-10°F). Precipitation decreases to 59 mm (2.3 inches) over 11 days, with humidity slightly reduced to 88%. For a closer look at temperatures and conditions during this month, check out Aspen weather in January.
December and February experience similar cold temperatures, with February being slightly warmer on average. In December, temperatures range from a frigid -29°C (-20°F) to a maximum of 7°C (45°F), while February sees a minimum of -25°C (-13°F) and a high of 10°C (50°F). Precipitation is more frequent in February, totaling 78 mm (3.1 in) over 15 days compared to December's 65 mm (2.6 in) across 12 days. Additionally, humidity levels are quite high in both months, with December at 89% and February slightly lower at 87%. For more details, check out Aspen weather in February.
In December, the weather is notably colder with average temperatures hovering around -9°C (15°F) and reaching a minimum of -29°C (-20°F). The month experiences significant precipitation, totaling 65 mm (2.6 in) over approximately 12 days, coupled with a high humidity of 89%. In contrast, March offers a milder climate, boasting an average temperature of -4°C (26°F) and maximums rising to 11°C (51°F). Although March has slightly more precipitation at 82 mm (3.2 in) across 14 days, the humidity is lower at 81%. For more insights on March weather, visit Aspen weather in March.
December and April present starkly different weather patterns. In December, temperatures range from a chilly minimum of -29°C (-20°F) to a relatively mild maximum of 7°C (45°F), with an average of -9°C (15°F). Humidity is quite high at 89%, and the month sees around 65 mm (2.6 in) of precipitation over 12 days. In contrast, April experiences slightly warmer conditions, with temperatures ranging from a minimum of -19°C (-2°F) to a maximum of 11°C (53°F) and an average of -1°C (31°F). This month brings a bit more precipitation, totaling 72 mm (2.8 in) across 13 days, combined with lower humidity levels at 76%. For a closer look at the weather specifics for April, visit Aspen weather in April.
December and May present striking contrasts in weather conditions. In December, temperatures can plummet to a minimum of -29°C (-20°F), with an average temperature of -9°C (15°F) and a maximum of just 7°C (45°F). The month experiences 65 mm (2.6 in) of precipitation over 12 days, coupled with high humidity at 89%, creating a chilly and often damp environment. In contrast, May features more moderate temperatures, with a minimum of -12°C (11°F), an average of 3°C (38°F), and a more pleasant maximum of 18°C (64°F). Precipitation in May totals slightly less at 62 mm (2.4 in) over the same number of days but comes with lower humidity at 66%, offering a clearer and brighter atmosphere. For a more detailed look at what to expect, check out Aspen weather in May.
December and June present starkly contrasting weather conditions. In December, temperatures can plummet to a minimum of -29°C (-20°F) and average around -9°C (15°F), while June boasts milder temperatures, with a minimum of -7°C (21°F) and an average of 10°C (50°F). Precipitation also varies, as December receives 65 mm (2.6 in) over 12 days, compared to June's lighter rainfall of 33 mm (1.3 in) over just 6 days. Humidity levels further highlight the difference, with December's humidity at a chilly 89%, while June's is a more comfortable 58%. For those interested in a deeper look at June conditions, visit Aspen weather in June.
December and July in Aspen present a striking contrast in weather. In December, temperatures plummet, with minimums reaching a chilling -29°C (-20°F) and average temperatures hovering around -9°C (15°F), while July brings warmer conditions with a minimum of -1°C (30°F) and an average of 14°C (57°F). Both months experience similar precipitation levels, with December seeing 65 mm (2.6 in) and July recording 60 mm (2.4 in), though the humidity in December is notably higher at 89% compared to July's 52%. For more details on July's climate, you can check out Aspen weather in July.
December and August in Aspen present starkly contrasting weather conditions. In December, temperatures plummet, with a minimum of -29°C (-20°F) and an average of -9°C (15°F), while precipitation is higher, totaling 65 mm (2.6 in) over about 12 days, contributing to the snowy landscape and a humidity level of 89%. In contrast, August offers a milder climate with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 25°C (77°F) and an average of 13°C (55°F). Precipitation is less frequent, with only 37 mm (1.5 in) over 8 days and a lower humidity of 56%. For a detailed look at August weather patterns, visit Aspen weather in August.
December and September present strikingly different weather patterns. December is marked by frigid temperatures, with daily averages around -9°C (15°F) and extremes dipping to a chilling -29°C (-20°F). In contrast, September enjoys milder conditions, boasting an average temperature of 9°C (49°F) and peaks reaching a comfortable 24°C (76°F). While December experiences higher humidity levels at 89% and more frequent precipitation (12 days), September sees less rain, totaling only 35 mm (1.4 in) over approximately 7 days. For those interested in a more detailed glimpse of September weather, Aspen weather in September provides additional insights.
December and October present quite different weather scenarios. In December, temperatures range from a chilly minimum of -29°C (-20°F) to an average of -9°C (15°F) and a maximum of 7°C (45°F), while October enjoys milder conditions with a minimum of -30°C (-21°F), an average of 1°C (34°F), and a maximum reaching 19°C (66°F). Precipitation is relatively similar, with December recording 65 mm (2.6 in) over 12 days and October seeing 62 mm (2.4 in) across 10 days. Additionally, December’s humidity is notably higher at 89%, compared to October's more comfortable 76%. For more details on October weather, you can check Aspen weather in October.
In comparing the weather between December and November, December is notably colder, with average temperatures hovering around -9°C (15°F) compared to November's slightly milder average of -6°C (22°F). Both months experience extreme lows, with December dipping to a minimum of -29°C (-20°F), just slightly lower than November's minimum of -28°C (-18°F). Precipitation is higher in December at 65 mm (2.6 in) over 12 days, while November receives 52 mm (2.1 in) over 9 days. Additionally, December tends to have higher humidity at 89%, compared to November's 82%. To learn more about the specific conditions experienced during November, check out Aspen weather in November.
In December, Aspen transforms into a winter wonderland, boasting colder temperatures and increased precipitation compared to other months. With an average temperature hovering around -9°C (15°F), it’s a stark contrast to the warmer seasons, often dropping as low as -29°C (-20°F) at night. The month sees around 12 days of precipitation, contributing to the area's notorious winter charm and a high humidity level of 89%. This climate not only creates perfect conditions for skiing enthusiasts but also enhances the beauty of the snow-capped landscapes. For a deeper dive into Aspen's diverse weather patterns, visit Aspen Climate.