Last updated: February 24, 2025
December in Chelsea, United States, presents a chilly contrast of temperatures, with a maximum reaching 19°C (66°F) and a notable minimum plummeting to -11°C (13°F). The average temperature hovers around 4°C (39°F), setting the tone for a brisk month. Rainfall is moderate, with 102 mm (4.0 in) of precipitation spread across 10 days, contributing to the 80% humidity that blankets the area. This blend of cool temperatures and regular precipitation creates a quintessential winter atmosphere, perfect for embracing the seasonal charm.
In Chelsea, United States, December signals the onset of winter, bringing with it a notable drop in temperatures. With minimums averaging around -11°C (13°F) and a chilly average of 4°C (39°F), this month stands as a stark contrast to the milder conditions experienced in earlier fall. As the days grow shorter, the maximum temperature gently peaks at 19°C (66°F), hinting at the last vestiges of autumn's warmth before the full embrace of winter. November's somewhat more temperate climate gives way to December's crisp air, revealing a clear trend towards colder days as the year draws to a close. This seasonal shift invites both the serene beauty of frost-covered landscapes and the cozy comfort of indoor gatherings, making December a unique month in Chelsea's yearly climate cycle.
In December, Chelsea experiences a steady embrace of winter, with precipitation peaking at 102 mm (4.0 in) over an average of 10 days. This marks a continuation of the typically wet trend observed throughout the fall, where November had 82 mm (3.2 in). As the year draws to a close, December's precipitation is slightly above the more variable summer months, yet consistent with the transition into winter, where colder air often brings about more steady rain or early snow. The months preceding December, particularly the wetter July and October, create a backdrop of variability, highlighting Chelsea's climate as both rich and dynamic, trading the lush greenery of summer for the stark, serene beauty of winter.
As the year winds down, Chelsea experiences a noticeable shift in humidity levels. In December, the humidity sits at 80%, reflecting a slight drop from the higher levels seen earlier in the month. The humidity remains elevated compared to the summer months, where it reaches a low of 62% in July. Throughout the fall, levels rise, peaking at 82% in November, before a subtle decrease into the winter. This trend indicates that while Chelsea's December can be marked by colder temperatures, the moisture in the air provides a dampness reminiscent of the earlier winter months, creating a unique blend of coolness and humidity as the year comes to a close.
In Chelsea, December marks a notable shift in the UV Index, dipping to 2—falling within the low exposure category. This reduction in UV radiation signifies a more lenient month for sun exposure, where the burn time extends to 45 minutes, allowing residents and visitors to enjoy outdoor activities with less concern for sunburn. The trend throughout the year showcases a gradual escalation in UV levels from the winter months of January (UV Index 3) through the peak summer days of June, July, and August, all reaching a maximum of 10. Conversely, as we enter late autumn and winter, the UV Index declines, promoting a safer sun-soaking experience. For those planning their outings, it’s beneficial to stay informed about the UV trends throughout the year. For more details, check out Chelsea UV Index.
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As December rolls in, Chelsea, United States, enjoys a relatively modest 181 hours of sunshine, a figure that reflects the gentle transition from the vibrant summer months. Following a peak of 353 hours in July, the sun gradually recedes, with sunshine hours dwindling during the fall to 219 hours in November. Although December presents a noticeable dip in sunlight compared to the summer, it still offers a bright farewell to the year, echoing February’s 181 hours and hinting at the promising rejuvenation of sunlight that awaits in the coming spring months. This cyclical pattern illustrates the comforting rhythm of the seasons, inviting residents to cherish even the subdued winter warmth and look forward to sunnier days ahead.
In Chelsea, December brings a notable dip in the likelihood of sunny weather, with only a 31% chance of sunshine. This trend marks one of the lowest probabilities throughout the year, reflecting a shift from the more favorable conditions seen in the preceding months, such as November, which enjoys a 55% chance of sun. As the year winds down, the gloomy winter days settle in, contrasting sharply with the sunnier spells of early spring, especially March, where the chances of clear skies rise to a pleasing 56%. Overall, if you're hoping for sunshine in December, it’s best to keep your expectations in check and embrace the enchanting winter ambiance instead.
In Chelsea, United States, the daylight duration follows a distinct seasonal pattern, peaking during the summer months and dwindling as winter approaches. Starting January with 9 hours of daylight, the days gradually grow longer, hitting 14 hours in May and maintaining this stretch through June and July. As summer fades into early autumn, daylight begins to recede, tapering to 12 hours in September and further diminishing to 11 hours by October. Remarkably, November and December both see a return to 9 hours, symbolizing the year's shortest days. This rhythmic cycle not only marks the passage of time but also influences the lifestyle and activities of the Chelsea community throughout the year.
As December settles over Chelsea, the wind carries a gentle chill, with an average speed of 3.0 m/s (7 mph). This marks a subtle decline from the earlier months, creating a serene, tranquil atmosphere as the year draws to a close. The trend into winter showcases a gradual easing of winds, beginning from the brisk gusts of early spring at 3.8 m/s (8 mph) in March, and tapering down through the summer months. By the end of the year, the breezes are soft, yet they continue to weave through the city, bringing with them the crisp essence of winter. Chelsea's winds are not only a marker of changing seasons but also a reminder of nature's rhythmic shifts.
The weather in Chelsea 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 Chelsea and find detailed weather information for every month.
December and January weather in Chelsea show notable differences. December typically experiences milder temperatures, with a minimum of -11°C (13°F) and an average of 4°C (39°F), while January gets colder, with a minimum dropping to -18°C (0°F) and an average of just 1°C (35°F). Precipitation is also higher in December at 102 mm (4.0 in) over 10 days compared to January's 66 mm (2.6 in) over 8 days, though January has slightly higher humidity at 84%, up from December's 80%. For a more detailed look at January weather patterns, visit Chelsea weather in January.
In December, temperatures typically range from a low of -11°C (13°F) to a high of 19°C (66°F), with an average temperature of 4°C (39°F). The month sees about 102 mm (4.0 in) of precipitation spread over 10 days, coupled with a humidity level of 80%. In contrast, February tends to be slightly colder at the lower end, with temperatures dropping to -16°C (4°F), while the maximum can reach 23°C (73°F) and the average hovers around 3°C (37°F). Precipitation increases slightly to 107 mm (4.2 in) over the same number of days, with humidity remaining relatively high at 82%. For a more detailed look at February weather specifics in Chelsea, you can visit Chelsea weather in February.
December and March exhibit notable differences in weather patterns, despite their similar precipitation levels. In December, temperatures range from a minimum of -11°C (13°F) to a maximum of 19°C (66°F), leading to an average of 4°C (39°F) and an overall chilly atmosphere. The month is characterized by high humidity at 80% and consistent precipitation over about 10 days. In contrast, March brings slightly milder conditions, with temperatures ranging from -9°C (16°F) to a much warmer 27°C (80°F), resulting in an average of 6°C (43°F). Humidity remains similar at 81%, while precipitation levels remain steady at 103 mm over 10 days. For more specific details, you may want to explore Chelsea weather in March.
In December, the weather experiences a significant chill, with temperatures ranging from a minimum of -11°C (13°F) to a maximum of 19°C (66°F) and an average temperature of just 4°C (39°F). The month also sees considerable precipitation, totaling 102 mm (4.0 in) over 10 days, coupled with a high humidity of 80%. In contrast, April brings a much milder climate, with temperatures starting at a minimum of -1°C (31°F) and reaching a comfortable high of 29°C (85°F), averaging around 12°C (53°F). While April is slightly wetter, with 111 mm (4.4 in) of precipitation over 12 days, the humidity remains relatively lower at 78%. For more detailed insights about the weather in April, you can check Chelsea weather in April.
December and May present stark contrasts in weather patterns. In December, temperatures range from a chilling minimum of -11°C (13°F) to a mild maximum of 19°C (66°F), with an average temperature of 4°C (39°F). The month experiences significant precipitation, totaling 102 mm (4.0 in) over about 10 days, alongside high humidity at 80%. In contrast, May brings warmer conditions, with temperatures soaring from a minimum of 2°C (37°F) to an average of 17°C (63°F) and reaching up to a scorching 32°C (90°F). Although May has a slightly higher precipitation total of 118 mm (4.6 in) over 12 days, the humidity is lower at 69%. For a detailed look at the conditions in May, visit Chelsea weather in May.
December and June exhibit strikingly different weather patterns. In December, temperatures range from a chilly -11°C (13°F) to a mild 19°C (66°F), with an average of 4°C (39°F). The month sees about 102 mm (4.0 inches) of precipitation over 10 days, coupled with a high humidity level of 80%. In contrast, June brings a much warmer climate, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 35°C (96°F) and an average of 22°C (73°F). Despite experiencing nearly similar precipitation levels of 94 mm (3.7 inches) over 13 days, June’s lower humidity at 69% makes for a more comfortable atmosphere. For more detailed information, check out Chelsea weather in June.
The contrast between December and July weather is quite striking. In December, temperatures can plummet to a minimum of -11°C (13°F) and average around 4°C (39°F), while reaching a maximum of 19°C (66°F). The month is characterized by high humidity at 80% and receives about 102 mm (4.0 in) of precipitation over approximately 10 days. In stark contrast, July boasts much warmer temperatures, with a minimum of 16°C (61°F), an average of 26°C (79°F), and highs soaring up to 36°C (97°F). While July has slightly more precipitation at 144 mm (5.6 in) over about 14 days, the humidity is notably lower at 62%. For more details on July weather, refer to Chelsea weather in July.
December and August present starkly contrasting weather conditions. In December, temperatures can drop to a minimum of -11°C (13°F), with an average of 4°C (39°F) and a maximum of 19°C (66°F). The month sees about 102 mm (4.0 in) of precipitation over approximately 10 days, accompanied by high humidity at 80%. In contrast, August boasts much warmer temperatures, ranging from a minimum of 15°C (60°F) to a sweltering maximum of 35°C (95°F), with an average of 25°C (77°F). Precipitation is slightly higher at 126 mm (5.0 in), falling over about 14 days, but humidity is lower at 65%. For more specifics on the August weather, you can visit Chelsea weather in August.
In December, the weather is notably colder, with temperatures ranging from a minimum of -11°C (13°F) to a maximum of 19°C (66°F), compared to September's warmer average of 21°C (71°F), peaking at 34°C (93°F). December also sees higher humidity levels at 80%, contributing to a chillier atmosphere, while September's humidity is more comfortable at 68%. Precipitation is slightly more abundant in December, totaling 102 mm (4.0 in) over 10 days, compared to September's 91 mm (3.6 in) over the same number of days. For more detailed insights into September's climate, you can check Chelsea weather in September.
When comparing the weather in December and October, it's evident that October experiences more moderate temperatures, with a minimum of 3°C (37°F) and an average of 16°C (61°F), peaking at a warm 34°C (93°F). In contrast, December sees much colder conditions, where temperatures can dip as low as -11°C (13°F) and only reach an average of 4°C (39°F) with a maximum of 19°C (66°F). Precipitation levels are relatively similar, with October receiving 130 mm (5.1 in) and December seeing 102 mm (4.0 in) over 10 days each month, though the humidity is slightly higher in December at 80%, compared to 74% in October. For a more detailed outlook on October weather, you can check Chelsea weather in October.
In comparing the weather of December and November, December tends to be colder, with minimum temperatures reaching as low as -11°C (13°F) and an average of 4°C (39°F), while November has slightly milder lows of -9°C (17°F) and a higher average temperature of 8°C (47°F). The maximum temperatures in December peak at 19°C (66°F), which is considerably lower than November's highs of 25°C (76°F). Precipitation in December is also higher, totaling 102 mm (4.0 in) over about 10 days, compared to November's 82 mm (3.2 in) over 9 days. Humidity levels remain fairly consistent, with both months hovering around 80-82%. For a more detailed look at November weather in this area, you can visit Chelsea weather in November.
In December, Chelsea transforms into a winter wonderland, offering a stark contrast to the warmer months. With temperatures dipping significantly, it’s a month where cozy layers become essential to combat the chill. This period also sees a noteworthy increase in precipitation, resulting in a higher number of wet days compared to the drier seasons, adding a touch of moisture to the crisp air. The humidity levels rise, creating a damp atmosphere that can feel more biting than the numbers suggest. Those looking for a deeper understanding of Chelsea's weather patterns can explore more at Chelsea Climate.