Last updated: February 24, 2025
In Big Sky, United States, December showcases its chilly charm with an average temperature of -9°C (16°F), while maximums can reach a mild 7°C (44°F) and minimums plummet to a frigid -27°C (-15°F). This winter month is characterized by 49 mm (1.9 in) of precipitation spread over 13 days, creating a picturesque snowy landscape. The high humidity at 94% adds to the crispness of the air, making December a true winter wonderland for visitors and locals alike. Embrace the season’s beauty and prepare for a magical experience in this idyllic mountain retreat!
In Big Sky, United States, December marks a significant transition into winter, with temperatures displaying a stark chill. The month typically witnesses a minimum temperature of -27°C (-15°F), creating a frosty atmosphere ideal for winter sports, while the average hovers around -9°C (16°F), indicating that the cold is firmly established. Daytime highs can reach up to 7°C (44°F), offering brief respites between the deep freezes. Throughout the year, December's temperatures are notably cooler than the preceding months, continuing the downward trend observed since October. This shift encapsulates the essence of winter in this mountainous region, where dramatic landscapes and crisp air come together to create a picturesque, if icy, seasonal experience.
In Big Sky, United States, December brings a moderate level of precipitation, with 49 mm (1.9 in) of moisture recorded over 13 days. This marks a gradual decline from the preceding months, as November saw 61 mm (2.4 in) of rain across the same number of days. Interestingly, even though December has less precipitation compared to the wetter months of spring and early summer, it still stands out as a crucial time for snow accumulation. The overall trend reveals that while winter begins with lighter precipitation, the anticipation of heavier snowfall often follows, contributing to the region's picturesque winter landscapes.
December in Big Sky, United States, marks a notable peak in humidity with levels soaring to a striking 94%. This rise contrasts sharply with the summer months, where humidity dips to its lowest at 69% in August. As the year progresses, a gradual increase in moisture can be observed, starting from a low of 74% in July to a substantial jump in November at 89%. This trend highlights the area's shift from drier summer conditions to a wetter winter atmosphere, creating a unique environment that contributes to the region's picturesque winter landscape. The December humidity not only enhances the cozy charm of the season but also sets the stage for snowfall, making it a delightful time for both residents and visitors to embrace the beauty of Big Sky.
As December rolls into Big Sky, the UV Index drops to a low level of 2, signaling a more forgiving sun compared to the intense exposure seen in the summer months. This trend of decreasing UV levels continues from November's moderate index of 4, allowing for safer outdoor activities with an extended burn time of 45 minutes. It's a stark contrast to the peak summer months, where UV exposure surged to extreme levels, demanding heightened caution and limited sun exposure. Enjoy the beautiful winter landscapes while basking in the more subtle winter rays, but remember that protection is always wise regardless of the season. For detailed information, check out the Big Sky UV Index.
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In Big Sky, United States, December brings a cozy blend of winter charm and moderate sunshine, offering 177 hours of daylight— a gentle contrast to the brisk chill of the season. As the year wraps up, daylight hours show a clear trend of increasing brightness from the deep winter months of January, which starts with a mere 139 hours. This gradual rise continues into the new year, with a notable leap in sun exposure as spring approaches. Snow-covered landscapes are illuminated by the winter sun, creating an enchanting atmosphere. While December may not boast the longest days of the year, its brighter skies signal the promise of brighter days ahead in January, where daylight begins to pick up once again. As you enjoy the serene beauty of Big Sky this month, take a moment to appreciate the warm glow of December's sunshine, a delightful precursor to the more vibrant months to come.
In December, the likelihood of sunny weather in Big Sky, United States drops significantly, with only a 21% chance of sunshine. This represents a stark contrast to the sunnier months of June and September, which boast up to 73% and 72% sunlight, respectively. As winter sets in, the trend emphasizes a gradual decline in sunny days from November’s 29%, indicating a clear shift towards colder and cloudier conditions as the year draws to a close. With winter activities in full swing, December's limited sunshine may encourage visitors to embrace the enchanting snow-covered landscapes rather than chase the elusive sun.
As winter sets in, Big Sky, United States, experiences a notable shift in daylight duration. December brings the shortest days of the year, with only 8 hours of daylight, a stark contrast to the bright 15 hours enjoyed during the peak of summer in June and July. This gradual decrease in daylight begins in October, where the sunshine dips to 10 hours, followed by November's return to 9 hours. The trend reflects a natural ebb and flow of daylight that characterizes the seasons, with the return of longer days anticipated as spring approaches, starting with 11 hours in March and culminating in 14 hours by May. The cyclical nature of daylight in Big Sky not only marks the changing seasons but also invites a sense of anticipation for longer, sunlit days ahead.
As December sweeps through Big Sky, the winds begin to pick up, reflecting a notable increase in average wind speed to 3.1 m/s (7 mph). This seasonal shift is part of a broader trend where wind speeds gradually climb toward the year's end, with November experiencing a rise to 2.8 m/s (6 mph). Interestingly, the winter months display a distinct pattern of gentle breezes, with January and October both returning to a compatible 2.5 m/s (6 mph) after the fall's mild lull. Overall, as the year concludes, December heralds the arrival of a brisker air, inviting outdoor enthusiasts to embrace the invigorating chill and stunning landscapes that characterize this enchanting time in Big Sky.
The weather in Big Sky 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 Big Sky and find detailed weather information for every month.
December and January share similar average temperatures, hovering around -9°C (16°F), but January tends to be slightly colder, with minimum temperatures dipping to -28°C (-19°F) compared to December's -27°C (-15°F). January experiences a max temperature of 3°C (37°F), which is lower than December's maximum of 7°C (44°F). Both months see a decent amount of precipitation, with December receiving 49 mm (1.9 in) over 13 days and January slightly less at 42 mm (1.6 in) over 11 days. Humidity levels remain high in both months, with December at 94% and January at 93%. For a more detailed overview of January weather in Big Sky, visit Big Sky weather in January.
December and February both experience cold temperatures, but February tends to be slightly chillier, with a minimum temperature dipping to -33°C (-27°F) compared to December's -27°C (-15°F). The average temperature remains similar for both months, hovering around -9°C (15°F to 16°F). Notably, February sees increased precipitation, with 82 mm (3.2 in) over 17 days, versus December's 49 mm (1.9 in) over 13 days, leading to slightly higher humidity levels. For a more detailed look at February weather patterns, visit Big Sky weather in February.
In December, temperatures can plummet, reaching a minimum of -27°C (-15°F) and averaging around -9°C (16°F), with a maximum of 7°C (44°F). The month sees about 49 mm (1.9 in) of precipitation over 13 days, while humidity is quite high at 94%. In contrast, March experiences slightly milder conditions, with minimum temperatures still at -27°C (-17°F) but an average temperature of -4°C (26°F) and highs reaching 12°C (53°F). Precipitation increases to 65 mm (2.6 in) over the same number of days, although humidity decreases to 89%. For a closer look at the climate during this transitional month, check out Big Sky weather in March.
In December, temperatures can drop significantly, with minimums reaching as low as -27°C (-15°F) and average highs only reaching 7°C (44°F). The month sees about 49 mm (1.9 in) of precipitation over 13 days, coupled with high humidity levels at 94%, contributing to a cold and damp atmosphere. In contrast, April brings a notable shift, with average temperatures rising to -1°C (30°F) and maximums reaching a milder 15°C (59°F). Precipitation increases to 90 mm (3.6 in) across 16 days, but the lower humidity of 83% makes the conditions feel less oppressive. For more detailed weather insights, check out Big Sky weather in April.
December and May present strikingly different weather patterns. In December, temperatures can plunge to a minimum of -27°C (-15°F), with an average of -9°C (16°F) and a maximum of 7°C (44°F), combined with high humidity at 94%. Precipitation occurs on about 13 days, totaling 49 mm (1.9 in). Conversely, May offers a more moderate climate, with minimum temperatures around -11°C (13°F) and a pleasant maximum of 21°C (70°F), leading to an average temperature of 3°C (38°F). Rainfall increases to 89 mm (3.5 in) over 19 days, and humidity drops to 79%. For more information about May weather, visit Big Sky weather in May.
In December, the weather is characterized by frigid temperatures, with a minimum of -27°C (-15°F) and an average of -9°C (16°F), only reaching a maximum of 7°C (44°F). The month sees a high level of precipitation, totaling 49 mm (1.9 in) over approximately 13 days, and maintains a high humidity level of 94%. In stark contrast, June experiences a milder climate with temperatures ranging from a minimum of -8°C (17°F) to a comfortable maximum of 27°C (81°F), averaging around 10°C (51°F). Precipitation increases to 102 mm (4.0 in) over 16 days, but the humidity drops significantly to 76%. For a deeper look into Big Sky weather in June, you can check out Big Sky weather in June.
In December, Big Sky experiences frigid temperatures, where the average drops to -9°C (16°F) and can plummet to as low as -27°C (-15°F), making it a stark contrast to the warm summer months. Precipitation occurs over 13 days, with a total of 49 mm (1.9 in), combined with high humidity levels of 94%. In contrast, July brings much more pleasant weather, with average temperatures around 15°C (60°F) and highs reaching up to 29°C (85°F). The month sees slightly less rainfall, totaling 44 mm (1.7 in) spread across 12 days, and the humidity is notably lower at 74%. For more details about July weather, you can visit Big Sky weather in July.
December and August present stark contrasts in weather conditions. In December, temperatures plunge to a minimum of -27°C (-15°F) with an average of -9°C (16°F) and a maximum of 7°C (44°F), accompanied by high humidity levels reaching 94%. The month sees around 49 mm (1.9 in) of precipitation over 13 days, making it a cold and damp time of year. In contrast, August offers a much milder climate, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 29°C (85°F) and an average temperature of 14°C (58°F). The precipitation is slightly higher at 56 mm (2.2 in) over 11 days, but the humidity is significantly lower at 69%. For more detailed insights into August weather, visit Big Sky weather in August.
In comparing the weather between December and September, it's evident that September offers a much milder climate. While December’s temperatures can plummet to a minimum of -27°C (-15°F) with an average high of only 7°C (44°F), September experiences a broader range with minimums around -9°C (16°F) and maximums soaring up to 28°C (83°F). Additionally, December sees more frequent precipitation over 13 days, albeit lighter at 49 mm (1.9 in), compared to September's 59 mm (2.3 in) over just 8 days. Humidity levels also differ significantly, with December at a high 94%, creating a stark contrast to September’s 67%. For more details on September's conditions, check out Big Sky weather in September.
December weather presents a chilling contrast to October's conditions. While October experiences a broader temperature range with a minimum of -30°C (-22°F) and a maximum of 20°C (68°F), December settles into colder averages, with temperatures ranging from a minimum of -27°C (-15°F) to a maximum of 7°C (44°F). Precipitation is slightly lower in December at 49 mm (1.9 in) over 13 days, compared to October's 77 mm (3.0 in) over 14 days. Additionally, December's humidity is remarkably high at 94%, contributing to a more damp and frosty atmosphere than October's more moderate humidity of 72%. For more details about October's weather, you can check out Big Sky weather in October.
In comparing the weather of December and November, December exhibits colder temperatures overall, with an average of -9°C (16°F) compared to November's -5°C (23°F). The minimum temperatures in December can plummet to -27°C (-15°F), while November's minimum reaches a slightly milder -22°C (-7°F). Although both months see precipitation on 13 days, December has lower total precipitation at 49 mm (1.9 in) compared to November's 61 mm (2.4 in). Humidity is higher in December at 94%, compared to 89% in November, contributing to a more frigid feel during the winter month. For more information about November's climate, you can check out this link: Big Sky weather in November.
As December sets in, Big Sky transforms into a winter wonderland characterized by its crisp, cold temperatures that starkly contrast with the milder months of fall. This month often sees a chill that plunges average temperatures well below freezing, inviting a dramatic landscape shift accompanied by increased precipitation, turning the region into a playground for snow enthusiasts. The high humidity, hovering at 94%, adds a unique layer of frost to the air, creating an atmosphere that feels both invigorating and brisk. For a deeper dive into the climatic trends throughout the year, visit Big Sky Climate.