December Weather in York Harbor, United States

Last updated: February 24, 2025

December in York Harbor, United States, showcases a captivating winter climate, characterized by a maximum temperature of 16°C (60°F) and a bracing average of 0°C (32°F). As the month progresses, temperatures can plunge to a minimum of -21°C (-5°F), delivering the quintessential chill of the season. With 130 mm (5.1 in) of precipitation spread over 10 days, residents can expect a mix of rain and snow, accentuated by a high humidity level of 81%, creating a cozy yet brisk atmosphere. Whether you're enjoying holiday festivities or embracing the beauty of winter, York Harbor this December offers a unique blend of frosty charm and seasonal allure.

December Temperature in York Harbor

In December, York Harbor experiences a notable chill as winter solidifies its grip on the region. With minimum temperatures dipping to -21°C (-5°F) and an average barely reaching 0°C (32°F), the month sets the stage for a stark contrast to the milder fall months. However, highs can still reach 16°C (60°F), hinting at fleeting, warmer moments within the cold. The progression from November's relatively balmy days, with an average of 5°C (41°F), sharply emphasizes the seasonal shift. As the year winds down, the sub-zero temperatures serve as a reminder of the winter's arrival, weaving a tapestry of cold beauty that characterizes York Harbor's December landscape.

December Weather in York Harbor: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in York Harbor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec283035465767727265544132
Data source: Temperature data for York Harbor 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 York Harbor

In December, York Harbor experiences a significant uptick in precipitation, with 130 mm (5.1 in) of rainfall recorded over 10 days. This marks a continuation of the wet trend seen throughout the fall, particularly notable in October and November, which both recorded substantial precipitation levels as well. The closing month of the year tends to be rainy, aligning with an overall pattern where the transition into winter often brings increased moisture. As temperatures drop, the consistent precipitation during December underscores a shift towards the chillier, wetter winter months ahead, making it a pivotal time for monitoring local weather and its potential impacts on the region.

December Precipitation Trends in York Harbor

The chart displays monthly precipitation patterns in York Harbor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec77938513175841317775132107130
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in York Harbor

In York Harbor, December ushers in a slight drop in humidity to 81%, aligning closely with the trends observed in the preceding months. Following November's 84%, the winter chill begins to influence moisture levels, marking a gradual decline from the higher summer averages that peak in June and July at 72%. This moderate humidity in December encapsulates the essence of the season, providing a crispness to the air while still retaining the familiar coastal dampness that characterizes York Harbor throughout the year. As the year wraps up, the humidity levels hint at the transition from the moist autumn months to the more variable conditions of winter.

December Average Humidity in York Harbor

This chart illustrates the average monthly humidity levels in York Harbor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in York Harbor

In December, York Harbor experiences a low UV Index of 2, indicating minimal risk of harm from unprotected sun exposure. This trend towards lower UV levels continues from the previous months, with values decreasing substantially since the peak readings in May and June, where the Index soared to 9 and 10, respectively. As we transition from the vibrant summer days, the burn time increases to 45 minutes in December, allowing for longer outdoor adventures with relatively less concern for sunburn. Overall, the declining UV Index highlights the seasonal shift towards cooler and less intense sunlight, making it a perfect time to engage in outdoor activities without the urgency of sun protection. For more detailed insights, visit the York Harbor UV Index.

Maximum UV Index Levels in York Harbor for December

The chart shows the monthly maximum UV Index (UVI) for York Harbor 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.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: York Harbor 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 York Harbor

In December, York Harbor bids farewell to the year with a modest 176 hours of sunshine, a warm glow amidst the cooler winter air. This amount marks a gentle decline from the vibrant 283 hours in September, reflecting the seasonal shift as days grow shorter. Throughout the year, sunshine peaks during the summer months, with July basking in the most light at 335 hours. Interestingly, the trend reveals a gradual ascent from the depths of winter, where January struggles with just 150 hours. As we transition into December, the sunlight serves as a brief, cheerful reminder of the warmth that is to return with the coming spring, connecting the quiet beauty of winter to the vibrant blooms of summer.

Monthly Sunshine Duration in York Harbor: December Highlighted

The December sunshine duration represents the total number of hours York Harbor 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.
JanFebMarAprMayJunJulAugSepOctNovDec150h183h256h245h295h330h335h337h285h221h193h176h
Data source: York Harbor December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in York Harbor During December

In December, York Harbor experiences a 33% chance of sunny weather, a figure that reflects a notable decline in sunny days compared to the previous month, which boasts a more favorable 55% chance. This drop aligns with a general trend observed as winter approaches, where sunny days become increasingly scarce. While December may not be the sunniest month, it transitions from the relatively bright November into a colder and often cloudier season, characterized by shorter days and a heightened likelihood of precipitation. Thus, those looking for clear skies should be prepared for the potential of overcast days as the year draws to a close.

Percentage of Sunny Days in December in York Harbor

The chart illustrates the percentage of sunny days in York Harbor 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 York Harbor experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%37%61%38%37%39%30%32%43%37%55%33%
Data source: York Harbor December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in York Harbor in December

In York Harbor, United States, the rhythm of daylight showcases a fascinating seasonal transformation. As the year unfolds, daylight hours steadily increase from 9 hours in January, peaking at 15 hours in June during the vibrant summer months. However, just as summer gives way to fall, daylight begins its gradual retreat, dropping back to 9 hours by December. This cyclical pattern highlights the contrast between the sun-drenched days of spring and summer and the cozy, shorter days of winter. The consistency of 9 hours at both January and December serves as a reminder of nature's unyielding cycles, framing the year with a sense of balance and renewal.

Average Daylight Hours in York Harbor for December

The chart illustrates the variation in daylight duration in York Harbor throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 22m10h 31m11h 57m13h 26m14h 41m15h 19m14h 58m13h 51m12h 26m10h 58m9h 41m9h 1m
Data source: York Harbor daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in York Harbor

In December, the wind in York Harbor maintains a steady rhythm, with an average speed of 3.5 m/s (8 mph). This month’s blustery characteristics mirror the patterns seen earlier in the year, as January and February also register at 3.6 m/s. A noticeable decline in wind speed occurs during the summer months, reaching a low of 2.7 m/s in August, before gradually picking up again in the fall. As we close the year, December's breeziness echoes the resilience of York Harbor's coastal charm, setting a tranquil yet invigorating tone for the season ahead.

Average December Wind Speed in York Harbor

The chart displays monthly wind speed patterns in York Harbor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.63.64.23.63.43.42.82.73.13.43.53.5 m/s
Data source: York Harbor December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in York Harbor Compares to Other Months

The weather in York Harbor 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 York Harbor and find detailed weather information for every month.

December and January both present cold weather conditions, but they have distinct characteristics. In December, temperatures range from a minimum of -21°C (-5°F) to a maximum of 16°C (60°F), with an average of around 0°C (32°F). The month sees approximately 130 mm (5.1 in) of precipitation over 10 days, accompanied by a humidity level of 81%. In contrast, January features slightly lower average temperatures, with a minimum of -21°C (-6°F) and a maximum of 17°C (62°F), resulting in an average temperature of -2°C (28°F). The precipitation decreases to 77 mm (3.0 in) spread over only 8 days, while humidity rises to 86%. Overall, January tends to be colder and potentially drier than December. For more detailed information, check York Harbor weather in January.

December and February exhibit notable differences in weather patterns, despite both being winter months. December experiences a wider temperature range, with minimums dropping to -21°C (-5°F) and maximums reaching up to 16°C (60°F), resulting in an average temperature of 0°C (32°F). This month also sees a higher precipitation total of 130 mm (5.1 in) over 10 days, coupled with a humidity level of 81%.

In contrast, February shows slightly milder conditions, featuring a minimum temperature of -17°C (1°F) and a maximum of 21°C (70°F), leading to an overall average of -1°C (30°F). Precipitation decreases to 93 mm (3.7 in) over the same number of days, while humidity slightly rises to 84%. For more detailed insights on February weather in a specific location, you can visit York Harbor weather in February.

In December, the weather tends to be colder, with average temperatures around 0°C (32°F) and a minimum reaching as low as -21°C (-5°F). The month also sees a higher level of precipitation, totaling 130 mm (5.1 in) over approximately 10 days and maintaining a humidity of 81%. In contrast, March experiences slightly milder conditions, with average temperatures climbing to around 2°C (36°F) and maximums of 21°C (70°F). Precipitation decreases to 85 mm (3.4 in) over 9 days and humidity remains comparable at 82%. For a more detailed look at March weather specifics, you can check York Harbor weather in March.

In December, temperatures typically range from a bitterly cold minimum of -21°C (-5°F) to a mild maximum of 16°C (60°F), with an average of around 0°C (32°F). The month sees significant precipitation, totaling 130 mm (5.1 in) over about 10 days, coupled with a high humidity level of 81%. In stark contrast, April experiences a milder climate, with temperatures ranging from a minimum of -3°C (26°F) to a warm maximum of 30°C (86°F) and an average of 8°C (46°F). Although April has a similar precipitation level of 131 mm (5.1 in) over 12 days, the humidity remains slightly lower at 80%. For more details, you can check York Harbor weather in April.

December and May exhibit strikingly different weather patterns. In December, temperatures range from a chilly minimum of -21°C (-5°F) to an average of 0°C (32°F), peaking at a maximum of 16°C (60°F). This month sees significant precipitation of about 130 mm (5.1 in) spread over 10 days, accompanied by high humidity at 81%. In contrast, May offers a more temperate climate, with temperatures starting at a minimum of 2°C (35°F) and soaring to an average of 14°C (57°F), reaching up to 34°C (93°F) at times. Precipitation in May is lower at 74 mm (2.9 in) over the same number of days, and humidity decreases slightly to 72%. For a closer look at May weather specifics, you can explore York Harbor weather in May.

December and June present stark contrasts in weather conditions. In December, temperatures range significantly, with minimums reaching as low as -21°C (-5°F) and a chilly average of 0°C (32°F). The month experiences higher humidity at 81% and considerable precipitation totaling 130 mm (5.1 in), spread over about 10 days. In contrast, June boasts much milder temperatures, with a minimum of 5°C (42°F) and an average of 19°C (67°F), peaking at 35°C (95°F). Additionally, June has lower precipitation at 84 mm (3.3 in) over approximately 11 days and a slightly lower humidity level of 72%. For a detailed look at the weather in June, visit York Harbor weather in June.

December and July present a stark contrast in weather patterns. In December, temperatures can plummet to a chilling -21°C (-5°F), averaging around 0°C (32°F) and reaching a maximum of 16°C (60°F). The month experiences significant precipitation, totaling 130 mm (5.1 in) over approximately 10 days, coupled with high humidity at 81%. In contrast, July boasts much warmer conditions, with minimum temperatures of 12°C (54°F), an average of 22°C (72°F), and peaks that can soar to 36°C (97°F). While July sees a similar amount of precipitation at 131 mm (5.2 in), it occurs over more days—13 in total—and features lower humidity at 67%. For more details, check out York Harbor weather in July.

December and August present strikingly different weather conditions. In December, temperatures can plummet to a minimum of -21°C (-5°F), with an average hovering around 0°C (32°F) and a maximum of 16°C (60°F). This month is also characterized by higher precipitation, totaling 130 mm (5.1 in) over about 10 days, and a humidity level of 81%. In contrast, August boasts a much milder climate with minimum temperatures of 10°C (51°F), average highs of 22°C (72°F), and maximums reaching up to 34°C (94°F). Precipitation is less frequent in August, totaling 77 mm (3.0 in) across about 9 days, and humidity levels are more comfortable at 66%. For more detailed insights, check out York Harbor weather in August.

The weather in December is markedly colder and more variable compared to September. In December, temperatures can plummet as low as -21°C (-5°F), with an average around 0°C (32°F) and a maximum of 16°C (60°F). In contrast, September enjoys milder conditions, with minimums at 4°C (40°F) and highs reaching a warm 33°C (91°F), averaging 18°C (65°F). Additionally, December experiences more precipitation, totaling 130 mm (5.1 in) over about 10 days, while September sees less moisture at 75 mm (2.9 in) across 7 days. The humidity is higher in December at 81% compared to 71% in September, contributing to a chillier feel during the winter month. For more detailed insights on September weather, you can refer to York Harbor weather in September.

In comparing the weather in December and October, we observe notable differences in temperature and conditions. December features a minimum temperature of -21°C (-5°F), an average of 0°C (32°F), and a maximum of 16°C (60°F), while October enjoys milder conditions with a minimum of -1°C (31°F), an average of 12°C (54°F), and a maximum of 28°C (83°F). Additionally, precipitation levels are similar, with December receiving 130 mm (5.1 in) over 10 days and October slightly higher at 132 mm (5.2 in) over 11 days. Despite the similar precipitation, December's higher humidity of 81% contrasts with October's 78%, making it feel colder during the winter month. For a more detailed look at the October weather patterns, you can visit York Harbor weather in October.

In comparing December and November, December experiences significantly colder temperatures, with an average around 0°C (32°F) and minimums dipping as low as -21°C (-5°F), while November sees milder averages at 5°C (41°F) and a minimum of -13°C (9°F). Despite both months having similar levels of precipitation occurring over about ten days, December's total precipitation is slightly higher at 130 mm (5.1 in) compared to November's 107 mm (4.2 in). Additionally, humidity levels remain high in both months, with December at 81% and November at 84%. For more detailed weather insights, you can visit York Harbor weather in November.

Compare York Harbor's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in York Harbor

As December unfolds in York Harbor, it marks a notable shift from the milder months of autumn to the more frigid embrace of winter. Average temperatures plummet, often dipping to their lowest points, showcasing the stark contrast with the previous months. While precipitation is common, with a modest amount falling over a handful of days, the heightened humidity adds to the chill in the air, making those brisk days feel even colder. This month, characterized by its potential for snow and icy conditions, invites cozy hearths and festive spirits, a true hallmark of the season. For a deeper dive into the climate patterns, explore York Harbor Climate.