December Weather in Gloucester, United States

Last updated: February 24, 2025

As December descends upon Gloucester, the coastal town experiences a dramatic range of temperatures, with a maximum reaching 14°C (58°F), an average of 3°C (38°F), and a chilling minimum plunging to -16°C (4°F). This month is characterized by significant precipitation, totaling 150 mm (5.9 inches) over approximately 10 days, contributing to the region's lush winter landscape. The high humidity levels of 81% add to the crisp, cool atmosphere, creating a festive yet brisk environment perfect for embracing the holiday spirit.

December Temperature in Gloucester

In December, temperatures in Gloucester, United States, take a noticeably chilly turn as winter sets in. With minimums dropping to -16°C (4°F), residents feel the bite of cold more sharply compared to the milder autumnal months. The average temperature hovers around 3°C (38°F), providing a stark contrast to the warmth of the preceding July and August. However, despite the frosty conditions, daytime highs still reach a respectable 14°C (58°F), allowing for brief moments of reprieve from the cold. Overall, December marks a transition into winter, characterized by its crisp air and the first hints of snow, inviting activities that embrace the season's charm.

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

The chart illustrates December temperature patterns in Gloucester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec333437445361697065574537
Data source: Temperature data for Gloucester generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Gloucester

In Gloucester, December marks a significant crescendo in precipitation, with the month recording 150 mm (5.9 in) of rainfall spread over approximately 10 days. This stands out as a crucial transition into the wetter winter months, following a notably drenching October which received 177 mm (7.0 in), suggesting an overall trend of increasing moisture as the year draws to a close. Compared to earlier months, December sees a slight uptick in precipitation, reflecting a pattern where fall often paves the way for winter storms. With rainfall consistently hovering around 114 mm in the late fall, Gloucester embraces the elements, readying itself for the challenges—and beauty—that winter brings.

December Precipitation Trends in Gloucester

The chart displays monthly precipitation patterns in Gloucester, 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.
JanFebMarAprMayJunJulAugSepOctNovDec92118111165104901056297177116150
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Gloucester

In Gloucester, United States, December brings a noticeable transition in humidity, with levels averaging around 81%. This figure reveals a slight decrease from the more humid months of late autumn, particularly November's 84%, suggesting that the air begins to dry as winter approaches. Interestingly, humidity remains relatively steady, especially when compared to the summer months, which see significantly lower averages, with July and August dipping to 67% and 66%, respectively. Overall, December's humidity maintains a balance between the high levels typical of early winter and the perennial lows of summer, creating a crisp yet comfortable atmosphere perfect for enjoying the season’s festivities.

December Average Humidity in Gloucester

This chart illustrates the average monthly humidity levels in Gloucester, 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 Gloucester

Throughout the year in Gloucester, the UV Index reveals significant variations in sun exposure, particularly shifting from the winter months to summer's peak. In December, the UV Index returns to a moderate level of 2, allowing for safer outdoor activities with a longer burn time of 45 minutes before needing to seek shade. This marks a low point compared to the very high levels seen in the spring and summer, where just 15 minutes of sun can lead to burns. Interestingly, as we transition from November's moderate UV Index of 4, it becomes clear that the colder months prioritize cautious sun exposure, while the intense summer sunlight necessitates vigilance. For those planning outdoor activities in December, it's beneficial to keep these trends in mind for safe sun practices. For more detailed information, check out the Gloucester UV Index.

Maximum UV Index Levels in Gloucester for December

The chart shows the monthly maximum UV Index (UVI) for Gloucester 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.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997642
Data source: Gloucester 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 Gloucester

In December, Gloucester experiences a drop in sunshine to 176 hours, following the sun-soaked summer months that peak in July with an impressive 340 hours. This winter month sees a significant reduction in daylight, yet it still glows brighter than the beginning of the year, where January only offers 152 hours of sunlight. As the year progresses, the increasing trend is notably clear; the spring and summer months bask in abundant sunshine, while November wraps up the fall with 202 hours. The transition into winter is marked by shorter days, but even in December, Gloucester retains a touch of that summer warmth, illuminating the path forward into the new year.

Monthly Sunshine Duration in Gloucester: December Highlighted

The December sunshine duration represents the total number of hours Gloucester 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.
JanFebMarAprMayJunJulAugSepOctNovDec152h188h255h244h295h330h340h330h280h228h202h176h
Data source: Gloucester December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Gloucester During December

December in Gloucester sees a notable decline in sunny weather, with only a 31% chance of sun illuminating the month. This figure is part of a trend where the likelihood of sunny days gradually fluctuates throughout the year, peaking in March at 61% and tapering off as winter approaches. After a comparatively brighter November, which enjoys a 55% chance, December's gray skies can feel particularly pronounced. Each month leading up to December showcases a varied probability of sunshine, illustrating how the season's shift affects the region’s climate. As the year winds down, residents can expect less frequent sunny spells, making the brief moments of light all the more precious.

Percentage of Sunny Days in December in Gloucester

The chart illustrates the percentage of sunny days in Gloucester 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 Gloucester experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec41%34%61%42%39%41%34%32%46%39%55%31%
Data source: Gloucester December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Gloucester in December

As December rolls in, daylight in Gloucester, United States, reaches its annual low, with only 9 hours of sunlight each day. This marks a consistent transition from the year’s peak in June, where the city basks in a generous 15 hours of daylight. The months leading up to December witness a gradual decline; November echoes this pattern with 9 hours of daylight, while October slightly dips to 10 hours. In stark contrast, spring ushers in an upward trend, with March starting at 11 hours and April enjoying 13 hours. As the seasons shift, daylight durations create a rhythmic ebb and flow, inviting Gloucester’s residents to embrace the cozy evenings of winter.

Average Daylight Hours in Gloucester for December

The chart illustrates the variation in daylight duration in Gloucester throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 26m10h 33m11h 57m13h 24m14h 37m15h 14m14h 54m13h 49m12h 26m10h 59m9h 44m9h 5m
Data source: Gloucester daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Gloucester

As the year winds down in Gloucester, December brings an average wind speed of 6.1 m/s (14 mph), slightly above the calmness of the summer months. While there’s a gentle dip in the breeze from the winter peak of January (6.6 m/s), December's gusts remain robust, maintaining a consistent vigor characteristic of late fall. This month’s winds echo the transitional nature of the season, as they shift from summer’s lull to winter’s chill. Interestingly, wind speeds in Gloucester reflect a broader seasonal pattern—starting strong in the winter and tapering off through the warmer months, before gradually building back up with the arrival of autumn. It's a rhythm that paints a dynamic picture of the coastal climate, inviting both residents and visitors to embrace the crisp, refreshing air as the year comes to a close.

Average December Wind Speed in Gloucester

The chart displays monthly wind speed patterns in Gloucester, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.66.46.75.65.45.14.44.35.05.96.06.1 m/s
Data source: Gloucester December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Gloucester Compares to Other Months

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

In December, temperatures range from a low of -16°C (4°F) to a high of 14°C (58°F), with an average temperature of 3°C (38°F). The month sees significant precipitation, totaling 150 mm (5.9 in) over about 10 days, while humidity levels remain relatively high at 81%.

January, on the other hand, starts with slightly colder temperatures, hitting a minimum of -17°C (2°F) and averaging around 1°C (33°F), although it also experiences a maximum of 15°C (59°F). Precipitation decreases to 92 mm (3.6 in) over 9 days, with humidity rising to 86%. This comparison highlights that while both months are chilly, January tends to be a bit drier and colder than December. For more details, you can check Gloucester weather in January.

In comparing the weather conditions of December and February, both months experience chilling temperatures, but February tends to be slightly milder. December has a minimum temperature of -16°C (4°F) with an average of 3°C (38°F) and a maximum of 14°C (58°F), while February sees a minimum of -14°C (8°F) and an average temperature of 1°C (34°F), peaking at 12°C (55°F). Precipitation in December is slightly higher at 150 mm (5.9 in) over 10 days, compared to February, which receives 118 mm (4.6 in) across 11 days. Humidity levels are also comparable, with December at 81% and February at 84%, indicating a constant moisture presence in the air during both months. For more details about February weather in Gloucester, you can visit Gloucester weather in February.

December and March share similar average temperatures, both hovering around 3°C (38°F). However, December experiences a more pronounced chill with minimum temperatures dropping to -16°C (4°F) compared to March's minimum of -11°C (13°F). Precipitation levels are also noteworthy; December sees 150 mm (5.9 in) over 10 days, while March has slightly less at 111 mm (4.4 in) over 11 days. Humidity remains fairly consistent, with December at 81% and March at 82%. For a closer look at March weather specifics, check out Gloucester weather in March.

December and April present contrasting weather patterns, with December typically showcasing colder temperatures, ranging from a minimum of -16°C (4°F) to a maximum of 14°C (58°F). The average temperature in December hovers around 3°C (38°F), accompanied by significant precipitation totaling 150 mm (5.9 in) over approximately 10 days and a humidity level of 81%. In contrast, April brings a milder climate with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 18°C (65°F), with an average temperature of 7°C (45°F). Rainfall increases slightly to 165 mm (6.5 in) across roughly 13 days, maintaining a similar humidity level at 80%. For more insights on the weather during this month, you can check Gloucester weather in April.

December and May present distinctly different weather conditions. In December, temperatures can plunge as low as -16°C (4°F), with an average of 3°C (38°F) and a maximum of 14°C (58°F). The month is characterized by significant precipitation, totaling around 150 mm (5.9 in) over about 10 days, along with high humidity levels at 81%. In contrast, May offers much milder temperatures, ranging from a minimum of 4°C (39°F) to a maximum of 22°C (72°F), with an average of 11°C (53°F). Precipitation in May is lower, at approximately 104 mm (4.1 in), again spread over about 10 days, but with reduced humidity at 72%. For more details on the delightful weather during this time, visit Gloucester weather in May.

December and June present strikingly contrasting weather patterns. In December, temperatures can dip as low as -16°C (4°F), with average highs around 3°C (38°F) and a maximum of 14°C (58°F). The month sees considerable precipitation, totaling 150 mm (5.9 in) over approximately 10 days, combined with a high humidity level of 81%. In contrast, June offers a much milder climate, with minimum temperatures around 10°C (50°F) and average highs reaching 16°C (62°F), peaking at 26°C (79°F). Precipitation is lighter, measuring 90 mm (3.6 in) over just 9 days, and the humidity is lower at 72%. For more details on the pleasant weather of June, check out Gloucester weather in June.

December and July in Gloucester present strikingly contrasting weather conditions. December sees much colder temperatures, with minimums plummeting to -16°C (4°F) and an average of around 3°C (38°F), while July enjoys mild warmth, with temperatures ranging from a minimum of 15°C (59°F) to an average of 20°C (69°F) and highs reaching up to 28°C (83°F). Precipitation is fairly consistent, with December receiving 150 mm (5.9 in) over about 10 days, while July records slightly less at 105 mm (4.1 in) over 11 days. Additionally, December's humidity level is higher at 81%, compared to July's more comfortable 67%. For a closer look at the July climate, check out Gloucester weather in July.

December and August present starkly different weather conditions. In December, temperatures can plunge to a chilling minimum of -16°C (4°F) and average around 3°C (38°F), with a maximum of just 14°C (58°F). This month also sees significant precipitation of 150 mm (5.9 in) over about 10 days and high humidity levels averaging 81%. In contrast, August enjoys much milder temperatures, ranging from a minimum of 16°C (60°F) to an average of 21°C (70°F) and a maximum of 28°C (82°F). The precipitation is considerably less, totaling 62 mm (2.5 in) over 8 days, and with a more comfortable humidity level of 66%. For more details on the weather patterns, check out Gloucester weather in August.

December weather is characterized by significantly colder temperatures, with average highs around 3°C (38°F) and lows plummeting to -16°C (4°F), while September enjoys a milder climate with an average high of 18°C (65°F) and a minimum of 11°C (53°F). Precipitation is also higher in December, with about 150 mm (5.9 in) over 10 days, compared to September's 97 mm (3.8 in) across 8 days. Additionally, December's humidity is notably higher at 81%, making the cold feel even more intense, whereas September has a more comfortable humidity level of 71%. For a detailed look at Gloucester weather, you can visit Gloucester weather in September.

December and October present contrasting weather patterns. In December, temperatures can drop significantly, with a minimum of -16°C (4°F) and an average of only 3°C (38°F), while October enjoys milder conditions, featuring a minimum of 3°C (37°F) and an average of 14°C (57°F). Precipitation also varies, with December receiving 150 mm (5.9 in) over about 10 days compared to October’s 177 mm (7.0 in) across 12 days. Additionally, December's higher humidity at 81% contrasts with October's more comfortable 78%. For a more in-depth look at October’s weather, you can explore Gloucester weather in October.

In comparing the weather between November and December, December tends to be significantly colder, with average temperatures ranging from a minimum of -16°C (4°F) to a maximum of 14°C (58°F). In contrast, November experiences milder conditions, with temperatures varying from a minimum of -9°C (16°F) to a maximum of 19°C (67°F). While December sees more precipitation, totaling 150 mm (5.9 in) over 10 days, November has slightly lower precipitation at 115 mm (4.5 in) over 11 days. Both months have comparable humidity levels, with December at 81% and November at 84%. For more detailed weather information, check Gloucester weather in November.

Compare Gloucester's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Gloucester

As December settles in, Gloucester experiences a notable shift in weather compared to other months of the year. The crisp chill of winter brings average temperatures that dip significantly lower, with maximums reaching a mild yet refreshing 14°C, contrasting sharply against the chillier minimums that can plummet to -16°C. This month is also marked by a higher level of humidity at 81%, which, combined with nearly 150 mm of precipitation over approximately 10 days, creates a damp atmosphere often seen in winter. These conditions distinguish December from the more temperate and drier months, reminding residents and visitors of the unique beauty and challenges that come with the holiday season. For a deeper dive into the weather patterns throughout the year, visit Gloucester Climate.