December Weather in Silverthorne, United States

Last updated: February 24, 2025

In December, Silverthorne, United States experiences a dramatic winter chill, with average temperatures plummeting to a brisk -10°C (14°F), dipping as low as -28°C (-18°F) at night. Daytime highs reach a mere 7°C (45°F), making it essential for visitors to bundle up. The month is characterized by frequent precipitation, totaling 43 mm (1.7 in) over approximately 10 days, further contributing to the snowy landscape. With an average humidity level of 89%, the air is crisp, enhancing the quintessential winter atmosphere that defines this picturesque mountain town.

December Temperature in Silverthorne

In Silverthorne, United States, December brings a notable chill as temperatures reach their annual lows. With minimums plunging to -28°C (-18°F), the month solidifies its reputation for cold, crisp days. On average, the temperature hovers around -10°C (14°F), while maximums struggle to surpass 7°C (45°F). This trend of frigid conditions is consistent with the winter months, but December stands out with its biting cold, setting the stage for the snowy landscape that the season is known for. As the year draws to a close, the town transforms into a winter wonderland, attracting those who appreciate the frosty charm amidst the rugged mountains.

December Weather in Silverthorne: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Silverthorne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec141624293648555448322114
Data source: Temperature data for Silverthorne generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Silverthorne

In December, Silverthorne experiences a notable consistency in its precipitation patterns, with an average rainfall of 43 mm (1.7 in) spread across approximately 10 days. This marks a slight dip from the wetter months preceding it, particularly April and March, which receive significantly higher amounts of rain. Compared to other months, December's precipitation is on par with colder months like January and November, indicating a trend towards drier winter conditions. Despite the decrease, the snow and rain contribute to the enchanting winter landscape that the area is known for, offering a picturesque setting as the year comes to a close. Overall, while December may not stand out for heavy rainfall, its steady precipitation sets the stage for a wonderfully serene winter in Silverthorne.

December Precipitation Trends in Silverthorne

The chart displays monthly precipitation patterns in Silverthorne, with values for each month alongside December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec425970807643594336614243
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Silverthorne

In Silverthorne, United States, December ushers in a notable spike in humidity, reaching 89%—the highest for the year. Following the trend of the cooler months, where humidity levels start to rise again after a summer dip, December stands out as a time when the air feels particularly heavy. The gradual decline from the humid conditions of late spring and summer, with levels dropping to 52% in July, culminates in this winter peak. As the year transitions from November's 82%, the increase signifies the onset of the cold season, often accompanied by snowfall, creating that crisp yet moist environment characteristic of mountain towns in winter.

December Average Humidity in Silverthorne

This chart illustrates the average monthly humidity levels in Silverthorne, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%76%67%58%52%56%65%76%82%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Silverthorne

As December rolls in Silverthorne, the UV Index dips back down to a moderate level of 4, similar to January’s readings. With a burn time of 30 minutes, it offers a welcome reprieve from the extreme levels and short exposures seen in the peak summer months. The gradual decrease in UV intensity from the highs of late spring and summer illustrates a clear seasonal trend, making winter a safer time for outdoor enthusiasts to enjoy the scenic beauty of the Rockies without the heightened risk of sunburn. Embracing the slopes or the trails in December means enjoying the fresh air and stunning landscapes while still exercising caution. For a complete overview of UV levels throughout the year, visit Silverthorne UV Index.

Maximum UV Index Levels in Silverthorne for December

The chart shows the monthly maximum UV Index (UVI) for Silverthorne in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec469121314131211754
Data source: Silverthorne December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in Silverthorne

In December, Silverthorne basks in the glow of 237 hours of sunshine, marking a cozy transition into winter. While this figure reflects a slight dip from the vibrant autumn month of November with 247 hours, it stands strong in comparison to the earlier winter months like January, which offers only 183 hours. As the year progresses, the trend shows that Silverthorne experiences a gradual increase in sunlight, peaking in the late spring and early summer. This pattern not only highlights the town's beautiful seasonal shifts but also provides residents and visitors alike with a festive backdrop of crisp, sunny days enveloped in the serene beauty of snow-covered landscapes.

Monthly Sunshine Duration in Silverthorne: December Highlighted

The December sunshine duration represents the total number of hours Silverthorne experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec183h232h291h316h355h382h382h357h314h280h247h237h
Data source: Silverthorne December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Silverthorne During December

In Silverthorne, the likelihood of enjoying sunny weather in December stands at 55%, which aligns with a notable trend of increasing sunshine as the year progresses towards its end. While January kicks off with a modest 51% chance of sun, this gradually rises through the months, peaking in the late summer and early fall. However, December maintains a bright outlook, significantly higher than the chillier early winter months of January and February, which drop to 38%. This December forecast suggests that although winter is well underway, residents and visitors can still anticipate a good number of sunny days, making it an inviting time to explore the beauty of this mountain town.

Percentage of Sunny Days in December in Silverthorne

The chart illustrates the percentage of sunny days in Silverthorne throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Silverthorne experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec51%38%48%52%44%56%54%66%68%56%61%55%
Data source: Silverthorne December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Silverthorne in December

In Silverthorne, United States, December marks the return of shorter days, with daylight lasting only 9 hours. This aligns with the seasonal trend of waning daylight as winter approaches. Following the gradual increase in daylight from January to May, where it peaks at 14 hours during the summer months, the days begin to shorten again through the fall, reaching 12 hours in September and 11 hours in October. By November, daylight declines to 9 hours, mirroring January's brief exposure to sunlight. This rhythmic pattern of daylight highlights the enchanting cyclical nature of the seasons, where each month brings its own unique balance of light and dark, setting the stage for winter's longer nights and serene landscapes.

Average Daylight Hours in Silverthorne for December

The chart illustrates the variation in daylight duration in Silverthorne throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 43m10h 42m11h 58m13h 16m14h 22m14h 54m14h 36m13h 38m12h 23m11h 6m9h 58m9h 24m
Data source: Silverthorne daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Silverthorne

As December settles in Silverthorne, the wind picks up slightly, averaging 2.8 m/s (6 mph). This marks a notable trend as the year wraps up, with December's wind speed matching that of November, suggesting a subtle uptick from the calm of summer. Throughout the warmer months, wind speeds generally hovered around 1.9 to 2.3 m/s (4 to 5 mph), but as winter approaches, there’s a clear shift toward more blustery conditions. This change not only underscores the arrival of the colder season but also enhances the crisp mountain air, inviting residents and visitors alike to embrace the enchanting winter landscape characterized by the gentle yet invigorating December winds.

Average December Wind Speed in Silverthorne

The chart displays monthly wind speed patterns in Silverthorne, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.63.22.42.62.32.11.92.12.02.42.82.8 m/s
Data source: Silverthorne December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Silverthorne Compares to Other Months

The weather in Silverthorne 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 Silverthorne and find detailed weather information for every month.

In December, the weather tends to be quite cold, with temperatures ranging from a minimum of -28°C (-18°F) to a maximum of 7°C (45°F), averaging around -10°C (14°F). The month sees about 43 mm (1.7 in) of precipitation spread over approximately 10 days, accompanied by high humidity levels at 89%. In comparison, January experiences slightly milder temperatures, with a minimum of -26°C (-14°F) and a maximum of 6°C (43°F), maintaining an average of -10°C (15°F). Precipitation decreases slightly to 42 mm (1.6 in) over about 9 days, with a marginally lower humidity of 88%. For more detailed information on January weather patterns, you can visit Silverthorne weather in January.

In December, the weather is characterized by colder temperatures, with an average of -10°C (14°F) and maximums reaching only 7°C (45°F). The month experiences significant humidity at 89% and sees about 43 mm (1.7 in) of precipitation across approximately 10 days. In contrast, February offers slightly milder conditions, featuring an average temperature of -9°C (16°F) and a maximum of 10°C (49°F). This month is wetter, with precipitation totaling 59 mm (2.3 in) over 14 days, and humidity remains relatively high at 87%. For more detailed insights, you can check Silverthorne weather in February.

December and March showcase distinct weather patterns, with December being noticeably colder. In December, temperatures dip with a minimum of -28°C (-18°F) and an average of -10°C (14°F), while March experiences a milder minimum of -24°C (-11°F) and an average of -5°C (24°F). Precipitation is more frequent in March, with 70 mm (2.7 in) over 13 days compared to December's 43 mm (1.7 in) over 10 days. Additionally, humidity levels are higher in December at 89%, compared to March's 81%. For a closer look at March's climatic conditions, you can check Silverthorne weather in March.

December weather is characterized by much colder temperatures, with averages around -10°C (14°F) and a chilling minimum of -28°C (-18°F). The month sees around 43 mm (1.7 in) of precipitation over approximately 10 days, and a high humidity level of 89% contributes to a brisk, wintry atmosphere. In contrast, April experiences a slight moderation in temperatures, averaging -2°C (29°F) and reaching a maximum of 12°C (54°F). This month is wetter, with precipitation reaching 80 mm (3.2 in) over 13 days, and the humidity drops to a more comfortable 76%. For a closer look at the specific weather conditions in April, check out Silverthorne weather in April.

December and May present strikingly different weather conditions. December is characterized by frigid temperatures, with averages hovering around -10°C (14°F) and a maximum temperature only reaching 7°C (45°F). In contrast, May brings a much milder climate, where temperatures can drop to -13°C (9°F) at night but can soar to 20°C (67°F) during the day. Additionally, while December experiences high humidity at 89% and a total precipitation of 43 mm over about 10 days, May is drier with lower humidity at 66% and higher total precipitation of 76 mm over 12 days. For more detailed insights into weather during this time, check out Silverthorne weather in May.

December and June present strikingly different weather patterns. In December, temperatures can plunge as low as -28°C (-18°F), with an average of -10°C (14°F) and a maximum reaching only 7°C (45°F). The month experiences about 43 mm (1.7 in) of precipitation over 10 days, coupled with high humidity at 89%, creating a cold and damp atmosphere. In contrast, June offers a significantly milder climate, with temperatures ranging from a minimum of -8°C (19°F) to a pleasant average of 9°C (48°F) and highs of 25°C (78°F). This month also sees the same 43 mm (1.7 in) of precipitation, but over just 7 days, and the humidity is notably lower at 58%. For more details on June weather, visit Silverthorne weather in June.

December and July present stark contrasts in weather. December is characterized by frigid temperatures, with a minimum of -28°C (-18°F) and an average of -10°C (14°F), while July enjoys milder conditions, featuring a minimum of -2°C (29°F) and an average of 13°C (55°F). Precipitation is more frequent in July, occurring on 12 days with a total of 59 mm (2.3 in), compared to December's 43 mm (1.7 in) over 10 days. Additionally, December's humidity sits at a chilly 89%, while July experiences a much more comfortable 52%. For more detailed insights on summer weather, check out Silverthorne weather in July.

December and August present stark contrasts in weather. In December, temperatures plummet, with minimums reaching as low as -28°C (-18°F) and average highs around just 7°C (45°F), accompanied by high humidity levels of 89%. This month also sees roughly 43 mm (1.7 in) of precipitation spread over 10 days, often falling as snow. In contrast, August enjoys a milder climate, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 24°C (75°F) and an average of 12°C (54°F). Interestingly, August also sees a similar total of 43 mm (1.7 in) of precipitation but over just 9 days, paired with a much lower humidity of 56%. For a closer look at Silverthorne’s weather in August, check out Silverthorne weather in August.

December weather is characterized by much colder temperatures, with average highs only reaching 7°C (45°F) and lows plummeting to -28°C (-18°F), compared to the relatively mild September temperatures, which range from a minimum of -8°C (17°F) to a maximum of 23°C (74°F). Additionally, December experiences higher humidity at 89%, making the cold feel more biting, while September boasts a more comfortable humidity level of 65%. Precipitation is somewhat similar in both months, with December receiving 43 mm (1.7 in) over about 10 days and September slightly less at 36 mm (1.4 in) over 8 days. For a detailed overview of September conditions, you can check out Silverthorne weather in September.

In December, temperatures tend to be colder compared to October, with a minimum of -28°C (-18°F) and an average of -10°C (14°F), contrasted with October's minimum of -24°C (-10°F) and average of 0°C (32°F). While December experiences a maximum of only 7°C (45°F), October enjoys much milder highs of up to 19°C (66°F). Precipitation levels are slightly lower in December at 43 mm (1.7 in) over 10 days, compared to October's 61 mm (2.4 in) also over 10 days, indicating that October is not only warmer but also wetter. Additionally, humidity is significantly higher in December at 89%, while October has a more comfortable humidity level of 76%. For more details, you can check Silverthorne weather in October.

In comparing the weather conditions of December and November, December presents a notably colder climate, with average temperatures around -10°C (14°F), compared to November's average of -6°C (22°F). The minimum temperatures drop to -28°C (-18°F) in December, slightly colder than November's minimum of -26°C (-15°F). Precipitation levels remain almost the same, with December receiving 43 mm (1.7 in) and November slightly behind at 42 mm (1.7 in), but December experiences more rainy days, totaling 10 compared to November's 8. Additionally, humidity is higher in December at 89%, while November records a more moderate 82%. For more details on the specific weather patterns in November, you can explore Silverthorne weather in November.

Compare Silverthorne's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Silverthorne

As December sets in, Silverthorne transforms into a winter wonderland, marked by a notable drop in temperatures compared to other months. The chilly air brings a bite that can reach frigid lows, while occasional precarious precipitation adds to the snowy landscape, with about ten days of moisture. High humidity levels contribute to the crispness in the air, making outdoor adventures both exhilarating and invigorating. If you're planning a visit, be prepared for the cold and embrace the stunning winter scenery that December uniquely offers. For a deeper understanding of what to expect, check out Silverthorne Climate.