Last updated: February 24, 2025
In Mystic, United States, December ushers in a seasonal chill, with maximum temperatures reaching 16°C (61°F) and an average of 4°C (40°F), while the mercury can plunge to a brisk minimum of -11°C (12°F). This month is characterized by a high humidity level of 80%, contributing to a damp atmosphere that is further enhanced by 141 mm (5.6 in) of precipitation spread over 11 days. Whether draped in frost or a subtle winter drizzle, December in Mystic offers a picturesque setting that captivates the essence of the season.
In December, Mystic, United States, experiences a distinct winter chill as temperatures begin to dip significantly. With a minimum temperature of -11°C (12°F), residents should brace for frosty conditions, while the average temperature hovers around 4°C (40°F), hinting at a cold yet occasionally bearable climate. The maximum temperature can reach up to 16°C (61°F), offering brief respites from the winter chill. As the year draws to a close, it's clear that December marks a transition into the heart of winter, contrasting sharply with the milder temperatures of the preceding months. This month’s weather invites cozy evenings indoors as the landscape transforms into a picturesque winter scene.
In Mystic, December sees a noteworthy shift in weather patterns, with precipitation reaching 141 mm (5.6 in), marking it as one of the wetter months of the year. This level of precipitation is accompanied by approximately 11 days of rainfall, contributing to a cozy, wintery atmosphere as the year comes to a close. Notably, December's precipitation surpasses both October and November, reflecting a trend where late fall and early winter months deliver significant rainfall. As the festive season approaches, the increase in wet days reinforces the expectation of a chilly yet enchanting landscape, making December a pivotal month in Mystic's climatic rhythm.
In Mystic, United States, December sees a return to higher humidity levels, with a notable 80%, echoing the moisture-laden atmosphere experienced earlier in the year. As we follow the trajectory from January to November, the data reveals a distinct pattern: humidity begins at a robust 84% during the winter months, gradually decreasing to a yearly low of 75% in the warmer late summer and early fall. Interestingly, December's humidity marks a slight increase after November’s 80%, suggesting a seasonal shift as the year draws to a close. This cyclical trend indicates that Mystic embraces a damp, comfortable climate throughout the winter months, inviting the coziness of the season while gently bidding farewell to the year.
In Mystic, United States, December marks a noticeable shift in the UV Index, dropping to a low rating of 2. As the year winds down, residents and visitors can enjoy extended outdoor time with a burn time of approximately 45 minutes before sun protection is necessary. This decrease in UV exposure is a stark contrast to the summer months, where the index peaked at 10, categorizing the conditions as very high and reducing burn time to just 15 minutes. Overall, the trend throughout the year highlights fluctuating UV levels, from moderate in winter to intense summer peaks, reminding us to remain vigilant about sun safety even during cooler months. For a detailed look at the UV Index throughout the year, visit Mystic UV Index.
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In Mystic, United States, December ushers in a quieter, yet still radiant chapter of the year, with 175 hours of sunshine. As the year transitions from the vibrant luminosity of summer, which peaks in July with an impressive 351 hours, the hours of daylight gradually wane through the cooler months. Notably, as winter sets in, the sunshine dips slightly from November's 207 hours, reflecting a natural trend of diminishing daylight during this period. Despite the shorter days, December's sun continues to provide a gentle warmth, wrapping the town in a soft glow, perfect for holiday strolls along its scenic shores.
When it comes to December's weather in Mystic, United States, the likelihood of sunny days diminishes, with only a 33% chance of sunshine. This marks a noticeable decrease as the year comes to a close, contrasting sharply with the more optimistic percentages found in March (61%) and November (54%). The trend reveals a gradual decline in sunny weather as the seasons transition from fall to winter, with December experiencing one of the lowest chances of sun compared to the earlier months. As Mystic enters winter, residents and visitors should prepare for the likelihood of more overcast days, embracing the cozy charm that the season brings.
In Mystic, United States, December ushers in a period where daylight wanes to 9 hours, mirroring the brevity of November's light. As the year transitions from the radiant days of summer, with June boasting an impressive 15 hours of daylight, we witness a gradual decline as autumn settles in. The shifting seasons reflect a beautiful rhythm; following the lengthy daylight of May and June, which bask in 14 and 15 hours respectively, both July and August retain some of that summer glow before drifting down to 13 hours. As we move into fall, the days shorten further, offering only 11 hours in October and November. December, nestled between these fleeting daylight benchmarks, marks a time of introspection and serenity, even as the cycle of longer days waits just beyond the horizon for the coming spring.
As December sweeps into Mystic, the wind begins to whisper its final notes of the year, settling at a steady 5.8 m/s (13 mph). This marks a continuation of the gentle breezes that have persisted since November, both months showcasing a return to moderate wind speeds after the summer lull. The year began with a more vigorous gust, averaging 6.2 m/s (14 mph) in both January and February, gradually tapering off through the spring and into the warmer months. By mid-summer, the winds mellowed to a calm 4.2 m/s (9 mph), creating an idyllic atmosphere. However, as autumn transitioned toward winter, the winds picked up slightly, bringing a refreshing chill. Now, in December, the air brims with the crisp promise of change, inviting residents and visitors alike to embrace the season's serene and invigorating winds.
The weather in Mystic 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 Mystic and find detailed weather information for every month.
December and January present distinct weather patterns. In December, temperatures range from a minimum of -11°C (12°F) to a maximum of 16°C (61°F), with an average of 4°C (40°F). The month experiences considerable precipitation, totaling 141 mm (5.6 in) over 11 days, and maintains a humidity level of 80%. In contrast, January sees colder temperatures with a minimum of -16°C (4°F) and a maximum of 14°C (58°F), resulting in an average of 2°C (35°F). Precipitation decreases to 83 mm (3.3 in) over 8 days, while humidity slightly rises to 84%. For more detailed insights on January weather, you can check Mystic weather in January.
In December, temperatures range from a minimum of -11°C (12°F) to a maximum of 16°C (61°F), with an average of 4°C (40°F). This month sees a total precipitation of 141 mm (5.6 in) over 11 days and maintains a humidity level of around 80%. In comparison, February experiences slightly colder temperatures, with a minimum of -13°C (9°F) and a maximum of 12°C (54°F), averaging 2°C (36°F). Precipitation in February is lower at 109 mm (4.3 in), also spread over 11 days, and humidity increases to 84%. While both months share similar precipitation frequency, the overall chill in February suggests a more brisk atmosphere. For more details on February weather, check out Mystic weather in February.
In December, temperatures can dip to a minimum of -11°C (12°F), with an average around 4°C (40°F) and a maximum reaching up to 16°C (61°F). The month sees considerable precipitation, averaging 141 mm (5.6 in) over approximately 11 days, and humidity levels hover around 80%. In contrast, March experiences slightly milder temperatures, with a minimum of -9°C (16°F), an average of 4°C (39°F), and a maximum of 15°C (60°F). Precipitation is somewhat lower, totaling 108 mm (4.3 in) over about 9 days, with humidity slightly higher at 82%. For more details on the weather in March, you can visit Mystic weather in March.
December weather is characterized by colder temperatures, with a minimum of -11°C (12°F) and an average of 4°C (40°F), peaking at 16°C (61°F). The month sees significant precipitation, amounting to 141 mm (5.6 in) over about 11 days, accompanied by high humidity levels of 80%. In contrast, April brings milder conditions, with minimum temperatures around 0°C (32°F) and an average of 8°C (47°F), reaching a maximum of 18°C (65°F). Although it remains relatively wet with 136 mm (5.3 in) over approximately 12 days, the humidity decreases slightly to 79%. To learn more about April's unique conditions, you can check Mystic weather in April.
In December, temperatures can drop as low as -11°C (12°F) with an average of around 4°C (40°F) and a maximum of 16°C (61°F), creating a stark winter chill. This month also sees significant precipitation, totaling 141 mm (5.6 in) over 11 days, accompanied by relatively high humidity at 80%. In contrast, May experiences much milder weather, with temperatures ranging from a minimum of 3°C (38°F) to a pleasant maximum of 22°C (72°F) and an average of 13°C (55°F). Although May has more precipitation days at 13, the total is slightly lower at 119 mm (4.7 in) and the humidity is a bit less, at 75%. For more detailed insights into May weather, you can check out Mystic weather in May.
December and June present strikingly different weather patterns. In December, temperatures range from a chilly -11°C (12°F) at night to an average of 4°C (40°F), peaking at 16°C (61°F). The month is characterized by higher precipitation, with a total of 141 mm (5.6 in) spread over 11 days and humidity levels averaging around 80%. In contrast, June offers a much warmer climate, with temperatures starting at a mild 10°C (50°F), averaging 18°C (64°F), and reaching up to 25°C (78°F). The precipitation decreases to 84 mm (3.3 in) over just 10 days, accompanied by slightly lower humidity at 78%. For more details on the delightful weather conditions during this summer month, check out Mystic weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures can dip as low as -11°C (12°F) while averaging around 4°C (40°F), with a maximum of 16°C (61°F). The month is characterized by significant precipitation, totaling 141 mm (5.6 in) over 11 days, combined with high humidity levels of 80%. In contrast, July boasts milder temperatures, with a minimum of 15°C (59°F) and averaging 22°C (72°F), peaking at a pleasant 29°C (85°F). Precipitation in July is slightly lower at 115 mm (4.5 in) over just 10 days, and humidity is somewhat less intense at 76%. This showcases the difference between a cold, damp winter month and a warm, summer environment perfect for outdoor activities. For more details, you can check out Mystic weather in July.
The weather in December presents a stark contrast to that of August. During December, temperatures can plummet to a minimum of -11°C (12°F) and average around 4°C (40°F), peaking at 16°C (61°F). In comparison, August enjoys much milder conditions, with minimum temperatures around 15°C (60°F) and average highs reaching 28°C (83°F). Precipitation levels are also notable, with December receiving 141 mm (5.6 in) over 11 days, while August sees 101 mm (4.0 in) across just 9 days. The humidity is slightly higher in December at 80%, compared to 76% in August, contributing to a more pronounced chill during the winter month. For a closer look at what to expect, check out the detailed overview of Mystic weather in August.
December weather is notably colder than September, with average temperatures ranging from a chilly -11°C (12°F) at night to a milder 16°C (61°F) during the day. In contrast, September experiences much more temperate conditions, with minimum temperatures around 10°C (51°F) and maximums reaching 27°C (82°F). Additionally, December sees more precipitation, totaling 141 mm over 11 days, compared to September's 101 mm over 9 days. The humidity levels are also higher in December at 80%, while September maintains a slightly lower humidity of 75%. For more details on September's climate, you can check out Mystic weather in September.
When comparing October and December weather, a notable contrast arises in temperatures and overall conditions. In October, the region enjoys milder temperatures, with averages around 16°C (60°F) and maximums reaching 25°C (77°F). This is a sharp contrast to December, where temperatures can drop significantly, with a minimum of -11°C (12°F) and an average of just 4°C (40°F). Precipitation levels are relatively close, with October receiving 157 mm (6.2 in) over 12 days and December slightly less at 141 mm (5.6 in) across 11 days. Additionally, December has a higher humidity level at 80%, compared to October's 75%. For more details on the enchanting October weather, you can explore Mystic weather in October.
In comparing the weather of December and November, December is characterized by cooler temperatures, with a minimum of -11°C (12°F) and an average of 4°C (40°F), while November has a milder range with a minimum of -7°C (20°F) and an average of 9°C (49°F). December also sees more precipitation, totaling 141 mm (5.6 in) over 11 days, compared to November's 113 mm (4.4 in) across 10 days. Humidity remains consistent at 80% for both months, indicating a damp atmosphere in both instances. For a detailed look at November's weather specifics, you can visit Mystic weather in November.
In Mystic, December unveils a unique climate tapestry that sets it apart from the other months. With its coldest temperatures reaching down to -11°C, the chilly air is often accompanied by a notable 80% humidity, creating an environment that can feel particularly brisk. Though the month sees a fair amount of precipitation, with 11 days of rain contributing to a total of 141 mm, these conditions add a mysterious charm to the landscape. As the year winds down, the average temperature sits around 4°C, inviting both locals and visitors to embrace the enchanting winter atmosphere in this coastal town. Discover more about what makes Mystic's climate special by exploring Mystic Climate.