December Weather in Fairbanks, United States

Last updated: February 24, 2025

December in Fairbanks, United States, is characterized by chilly temperatures and a seemingly relentless cold. The month features a maximum of 5°C (41°F) and an average low of -15°C (5°F), plunging to a frigid minimum of -39°C (-38°F). Residents and visitors alike experience a damp atmosphere, with humidity levels reaching a staggering 99%. This month also sees precipitation totaling 33 mm (1.3 in), spread over six days, adding to the wintry landscape. Despite the chill, December in Fairbanks offers a unique and enchanting glimpse into the beauty of Arctic winters.

December Temperature in Fairbanks

In December, Fairbanks, United States, plunges into the depths of winter, with temperatures reflecting the stark chill of the season. Daily minimums hover around -39°C (-38°F), setting the stage for an average temperature of -15°C (5°F). Despite the intense cold, daytime highs slowly begin to transition as they peak at a mild 5°C (41°F). This month clearly marks a continuation of the frigid trend observed since November, showcasing a pattern where the coldest days are reserved for the later part of the year. As the community gears up for the holiday season, it braves the icy embrace of winter, offering a testament to resilience in the face of nature’s frosty grip.

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

The chart illustrates December temperature patterns in Fairbanks, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec-321433526365584833115
Data source: Temperature data for Fairbanks 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 Fairbanks

In December, Fairbanks experiences a notable shift in precipitation, with 33 mm (1.3 in) falling over approximately 6 days. As the year closes, December's rainfall slightly surpasses the amounts recorded in January and March, highlighting a trend of increasing moisture as winter sets in. Although this is a relatively low total compared to the summer months, when rainfall peaks, December's precipitation signifies a gradual transition towards heavier winter snowfalls. The slight uptick in precipitation during this month may also hint at an emerging climate pattern, suggesting that even in the depths of winter, Fairbanks can be met with unexpected weather variations.

December Precipitation Trends in Fairbanks

The chart displays monthly precipitation patterns in Fairbanks, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1324212024564910443393133
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Fairbanks

As winter settles in Fairbanks, December's humidity remains notably high at 99%, continuing the trend established in previous months. Following November's peak at 100%, the air feels heavy and damp, typical of the cold season in this Alaskan city. The humidity has fluctuated throughout the year, starting at a crisp 96% in January and gradually declining to 77% by May, only to rise again as autumn progresses. This gradual cycle showcases the stark contrast between the dry and humid seasons, with December heralding one of the wettest periods of the year, ensuring that the chill of winter is accompanied by a pervasive moisture in the air.

December Average Humidity in Fairbanks

This chart illustrates the average monthly humidity levels in Fairbanks, 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.
JanFebMarAprMayJunJulAugSepOctNovDec97%93%89%85%77%78%85%88%90%97%100%99%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Fairbanks

In December, Fairbanks experiences a UV Index of 1, categorizing it as a low exposure month, much like the preceding months of January and February. This trend reflects the cold winter conditions that dominate the region, requiring around 45 minutes for skin to start burning under direct sunlight. The UV Index begins to rise in March, indicating a slow transition towards higher exposures as the days gradually lengthen, with levels reaching a moderate exposure category by April. As the year progresses into the summer months, Fairbanks sees consistently higher UV readings, peaking at 5 from May to August, prompting more caution against sun exposure. Ultimately, December's low UV levels provide a reprieve, making it a safe month for outdoor activities, as long as common winter precautions are taken. For more details about UV levels throughout the year, visit Fairbanks UV Index.

Maximum UV Index Levels in Fairbanks for December

The chart shows the monthly maximum UV Index (UVI) for Fairbanks 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.
JanFebMarAprMayJunJulAugSepOctNovDec112355553211
Data source: Fairbanks 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 Fairbanks

In December, Fairbanks experiences a stark decline in sunshine, with only 34 hours gracing the winter days. This significant drop follows a gradual decrease from the previous months, where November offered a mere 72 hours of sunlight. The year begins with an even bleaker outlook in January, showcasing just 43 hours. However, as the calendar progresses from the harshness of winter to the warmth of spring, the hours of sunshine increase dramatically, reaching a peak of 424 hours in June. This seasonal trend is a reminder of the long Alaskan winters, where the sun remains elusive, yet it sets the stage for the vibrant revitalization brought by the extended daylight of the summer months.

Monthly Sunshine Duration in Fairbanks: December Highlighted

The December sunshine duration represents the total number of hours Fairbanks 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.
JanFebMarAprMayJunJulAugSepOctNovDec43h115h214h304h392h424h367h247h199h131h72h34h
Data source: Fairbanks December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Fairbanks During December

In Fairbanks, the likelihood of encountering sunny weather dwindles as the year comes to a close, with December presenting only a 23% chance of sunshine. This marks a significant drop compared to the preceding months, where the chances range from 34% to 42%. Notably, while April boasts the most sunshine at 49%, the winter months tend to be less forgiving, gradually decreasing in sun exposure as November's 37% gives way to December's gloom. As winter sets in, residents and visitors alike should prepare for a sky that's mostly overcast, embracing the inviting glow of the holiday lights rather than the elusive sunshine.

Percentage of Sunny Days in December in Fairbanks

The chart illustrates the percentage of sunny days in Fairbanks 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 Fairbanks experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec41%42%34%49%35%36%34%17%34%20%37%23%
Data source: Fairbanks December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Fairbanks in December

In Fairbanks, Alaska, the daylight duration is a dynamic spectacle that shifts dramatically throughout the year. December stands out with just 3 hours of daylight, marking the darkest period of the year. As winter deepens, daylight begins to lengthen in January, offering a mere 5 hours of light, but this increment gradually gains momentum. By the time spring arrives in March, the days blossom into 11 hours of sunlight, heralding the return of life and warmth. The transition continues seamlessly into longer days, peaking at an impressive 21 hours by June, before making its gentle descent back into the shorter days of autumn. This rhythmic cycle showcases nature's resilience and the unique experience of living in a locale where sunlight can feel both scarce and abundant within a span of just a few months.

Average Daylight Hours in Fairbanks for December

The chart illustrates the variation in daylight duration in Fairbanks throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 15m8h 29m11h 52m15h 19m18h 49m21h 24m19h 49m16h 20m12h 55m9h 32m6h 10m3h 55m
Data source: Fairbanks daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Fairbanks

As December rolls into Fairbanks, the average wind speed picks up slightly to 2.7 m/s (6 mph), mirroring the brisk conditions typically felt in January. This seasonal uptick signals a transition from the calmer late autumn months, where winds hover around 2.1 m/s (5 mph) in November. Interestingly, the summer months present a drop in wind activity, with speeds reaching their lowest at 1.9 m/s (4 mph) in both June and September. Overall, December's winds, while reflective of winter's chill, serve as a reminder of the dynamic nature of Fairbanks' climate, showcasing a notable return to a more invigorating breeze just in time for the holiday season.

Average December Wind Speed in Fairbanks

The chart displays monthly wind speed patterns in Fairbanks, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.72.42.12.62.21.92.22.11.92.02.12.7 m/s
Data source: Fairbanks December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Fairbanks Compares to Other Months

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

December and January present some of the coldest months of the year, but January typically sees even harsher conditions. In December, the average temperature hovers around -15°C (5°F), with a minimum of -39°C (-38°F) and a maximum of 5°C (41°F). Humidity remains high at 99%, contributing to frosty conditions. In contrast, January experiences an even lower average temperature of -19°C (-2°F), with a minimum plunging to -46°C (-50°F), while the maximum is slightly lower at 4°C (40°F). Additionally, precipitation decreases in January to 13 mm (0.5 in) over just 4 days, compared to 33 mm (1.3 in) over 6 days in December. For a detailed look at the weather during this frigid month, check out Fairbanks weather in January.

December and February both present frigid weather conditions, although there are some differences worth noting. In December, the minimum temperature can drop to a chilling -39°C (-38°F), with an average around -15°C (5°F) and a maximum of only 5°C (41°F). Precipitation is relatively higher, with 33 mm (1.3 in) falling over six days, while humidity levels remain extremely high at 99%.

In comparison, February experiences similarly harsh temperatures, with a minimum of -40°C (-39°F) and an average of -16°C (3°F), but a slightly lower maximum of 4°C (40°F). Precipitation decreases to 24 mm (1.0 in) over seven days, and humidity drops to 93%. For a more detailed look at the weather patterns, you can check Fairbanks weather in February. Overall, while both months are characterized by severe cold, February tends to be slightly cooler and drier than December.

In December, the weather is harsh and frigid, with temperatures ranging from a chilling -39°C (-38°F) to a maximum of just 5°C (41°F) and an average of -15°C (5°F). The humidity remains a constant 99%, contributing to the biting cold, and precipitation occurs on about 6 days, totaling 33 mm (1.3 in). In contrast, March offers a slight reprieve from the winter grip, with temperatures varying from -37°C (-34°F) to a more moderate high of 13°C (56°F) and an average temperature of -10°C (14°F). Although precipitation also falls on 6 days in March, it amounts to only 21 mm (0.8 in) and the humidity decreases to 89%. For a more detailed view of Fairbanks weather in March, visit Fairbanks weather in March.

In December, temperatures plunge dramatically, with lows reaching a chilling -39°C (-38°F) and an average of -15°C (5°F), while February experiences milder conditions, peaking at 5°C (41°F). Precipitation is relatively moderate for the month, with 33 mm (1.3 in) spread over about 6 days, and humidity levels hover around a frosty 99%. In contrast, April sees a significant temperature rise, with minimums of -29°C (-19°F) and average temperatures settling around 0°C (33°F), while daily highs can reach a pleasant 19°C (66°F). The month also sees less precipitation, totaling only 20 mm (0.8 in) over approximately 5 days, alongside a decrease in humidity to 85%. For more details on the weather in April, visit Fairbanks weather in April.

In December, the weather is harshly cold, with average temperatures hovering around -15°C (5°F) and extreme lows reaching as low as -39°C (-38°F). Precipitation is relatively low at 33 mm (1.3 in), occurring over six days, but the humidity remains a staggering 99%, making the air feel much colder. In contrast, May experiences a significant warming trend, with average temperatures rising to 11°C (52°F) and daytime highs reaching up to 27°C (81°F). Precipitation is slightly less at 24 mm (0.9 in) spread over seven days, and the humidity drops to a more comfortable 77%. For a more detailed look at weather conditions, check out Fairbanks weather in May.

December and June present stark contrasts in weather conditions. In December, temperatures plummet to a minimum of -39°C (-38°F) and hover around an average of -15°C (5°F), with a maximum of only 5°C (41°F). The month experiences high humidity at 99% and sees precipitation on about 6 days, totaling 33 mm (1.3 in). Conversely, June offers a much milder climate, with temperatures ranging from a minimum of 5°C (42°F) to a pleasant maximum of 32°C (90°F), averaging around 17°C (63°F). This month receives more precipitation, falling on approximately 12 days, with a total of 56 mm (2.2 in), yet the humidity is significantly lower at 78%. For more details, check out Fairbanks weather in June.

December and July present strikingly contrasting weather conditions. In December, temperatures plummet to a chilling minimum of -39°C (-38°F), with an average of -15°C (5°F) and a maximum of just 5°C (41°F). The month experiences high humidity at 99% and around 33 mm (1.3 in) of precipitation spread across six days. In contrast, July brings a significant warmth, with minimum temperatures around 5°C (42°F), averages of 18°C (66°F), and peaks reaching as high as 31°C (89°F). This summer month sees slightly higher precipitation totals at 49 mm (1.9 in) over ten days, along with a lower humidity level of 85%. For a more in-depth look at the weather patterns during this vibrant summer month, check out Fairbanks weather in July.

In December, the weather is harshly cold, with temperatures dropping as low as -39°C (-38°F) and averaging around -15°C (5°F). Precipitation is low, with only six days of rain or snow contributing to a total of 33 mm (1.3 in), while the humidity remains at a staggering 99%. In contrast, August brings a significant warm-up, with temperatures ranging from a mild 4°C (39°F) at night to a hot 31°C (88°F) during the day, leading to an average of 14°C (58°F). This month sees more rainfall, with 104 mm (4.1 in) of precipitation over 15 days, and humidity levels are slightly lower at 88%. For a detailed look at Fairbanks weather during August, check out Fairbanks weather in August.

December and September showcase stark contrasts in weather. In December, temperatures plunge dramatically, with minimums reaching as low as -39°C (-38°F) and average highs hovering around -15°C (5°F). The month sees a relatively low precipitation level of 33 mm (1.3 in) over just 6 days, accompanied by extremely high humidity at 99%. In contrast, September experiences milder temperatures, ranging from a minimum of -8°C (18°F) to a comfortable maximum of 23°C (74°F), with an average temperature of 9°C (48°F). Although September has slightly higher precipitation at 43 mm (1.7 in) over 9 days, the humidity remains lower at 90%. For a more detailed look at Fairbanks weather, check out Fairbanks weather in September.

In December, temperatures plummet significantly, with a chilling minimum of -39°C (-38°F) and an average of -15°C (5°F), contrasting sharply with October's milder conditions, where temperatures range from a minimum of -14°C (7°F) to a maximum of 19°C (66°F). Precipitation levels are relatively similar, with December receiving 33 mm (1.3 in) over 6 days and October slightly higher at 39 mm (1.5 in) over 7 days. Additionally, humidity remains high in both months, hitting 99% in December compared to 97% in October, contributing to the biting cold of winter. For more details about October's weather, you can check Fairbanks weather in October.

In comparing the weather between November and December, December experiences slightly colder average temperatures, with a minimum of -39°C (-38°F) and an average of -15°C (5°F), while November registers a minimum of -35°C (-30°F) and an average of -12°C (11°F). Both months see similar levels of precipitation, with December recording 33 mm (1.3 in) over 6 days and November at 31 mm (1.2 in) over 8 days. Interestingly, while humidity remains high in both months, December stands at 99%, just a notch below November's 100%. For more information on November's weather, visit Fairbanks weather in November.

Compare Fairbanks's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Fairbanks

As December sets in, Fairbanks transforms into a winter wonderland, with temperatures plunging far below those of the preceding months. The stark chill is evident, with averages dipping to bitter lows, making it the coldest month of the year. While precipitation remains relatively low, the high humidity envelops the region, often leading to a persistent blanket of frost. These conditions starkly contrast with the milder and brighter days of autumn, signalling winter’s firm grip. For a deeper dive into how Fairbanks' weather shapes the experience throughout the year, visit Fairbanks Climate.