Last updated: February 24, 2025
December in Ketchikan, United States offers a chilly embrace, with average temperatures hovering around 3°C (38°F), reaching a maximum of 9°C (49°F) and dipping to a brisk -10°C (15°F). This month witnesses significant precipitation, amounting to approximately 345 mm (13.6 in), spread across roughly 21 days of wet weather, creating a lush, green landscape amidst the winter chill. Coupled with a high humidity level of 87%, December in Ketchikan exudes a unique, atmospheric charm, making it a captivating time to explore the region's stunning natural beauty.
In December, Ketchikan experiences a sharp dip in temperatures, showcasing the last vestiges of winter's bite. With minimums plummeting to -10°C (15°F) and an average hovering around 3°C (38°F), the city ushers in the chill that often characterizes the season. The maximum temperatures reach a modest 9°C (49°F), indicating that while the days are short, they still offer a hint of warmth amidst the cold. This month stands in stark contrast to the milder conditions of the preceding months, with temperatures gradually decreasing from autumn's more temperate embrace. The trend of colder weather culminates as Ketchikan prepares for the festive season, transforming the landscape into a winter wonderland, inviting both residents and visitors to embrace the magic of December.
In December, Ketchikan experiences a significant uptick in precipitation, with 345 mm (13.6 inches) of rain falling over 21 days. This makes December one of the wetter months of the year, trailing only November's higher total of 410 mm (16.1 inches) from 23 rainy days. The trend reveals a pattern, as winter months see increased precipitation, peaking in late fall to early winter. While the rainfall begins to taper off in the spring with only 141 mm (5.6 inches) recorded in May, December's robust moisture contributes to Ketchikan's lush landscapes and vibrant ecosystems even in the heart of winter. The consistent precipitation throughout the month underlines the region's reputation for heavy rainfall, setting the stage for the mild, green winters that characterize this coastal community.
In December, Ketchikan experiences a humidity level of 87%, slightly lower than the preceding months but still comfortably high. This winter month reflects a consistent trend through the year, where humidity tends to peak in the late summer and early fall, reaching a substantial 92% in both August and September. The overall pattern reveals a gradual decline from the peak of 90% in July, with a return to elevated but stable humidity levels in the colder months. Notably, December continues to showcase the maritime climate's influence, ensuring that even as temperatures drop, the air remains moist, enhancing the town's characteristic lushness.
As the year winds down in Ketchikan, December features a low UV Index of 1, mirroring the conditions seen in both January and November. This trend underscores a period of minimal sunlight intensity, offering residents and visitors a comfortable environment with a burn time of 45 minutes. After experiencing rising levels throughout the spring and summer, with peaks reaching 8 in July, it's a relief to step into the serene winter months where sun exposure poses little risk. For more detailed information about UV levels throughout the year, visit Ketchikan UV Index.
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In Ketchikan, United States, December signals the twilight of daylight for the year, as it typically boasts only 63 hours of sunshine. This marks a distinct contrast to the summer months, where daylight flourishes at its peak, with July basking in 248 hours. As the seasons transition, sunshine diminishes significantly from November's 70 hours, reflecting the gradual encroachment of winter's grasp. The trend shows that while the spring and summer months bring vibrant daylight—climbing from 48 hours in January to a sun-soaked 245 hours in May—the arrival of December heralds a cozy darkness, inviting residents to embrace the serene beauty of Ketchikan's winter landscape.
In Ketchikan, the likelihood of sunny weather in December sees a promising spike with a 38% chance of sun, marking a notable increase compared to the preceding months. This upward trend is particularly encouraging when juxtaposed with the cloudy gloom of November, which has only a 17% chance of sunshine. Interestingly, December stands out as one of the sunniest months towards the year's end, boasting a better likelihood of clear skies than both September (10%) and November. As winter approaches, residents and visitors alike can hold on to the hope of bright days ahead, making December a welcome respite amid Ketchikan's typically overcast climate.
In Ketchikan, the daylight duration exhibits a striking seasonal ebb and flow throughout the year. Starting with 7 hours of daylight in December, there is a gradual increase as winter gives way to spring, peaking at an impressive 17 hours in June. As the summer months fade, daylight begins to decrease again, dropping to 12 hours in September and returning to 7 hours by December. This rhythmic variation not only marks the changing seasons but also influences the town’s vibrant lifestyle, as residents and visitors alike adjust their activities to make the most of the shifting light. The cyclical pattern highlights Ketchikan's unique position in the Pacific Northwest, where nature’s rhythms are closely intertwined with daily life.
As December settles in Ketchikan, the wind begins to soften compared to the preceding months, averaging 5.4 m/s (12 mph). This reflects a notable decline from the 7.3 m/s (16 mph) experienced in November, signaling a shift towards calmer winter weather. Throughout the year, there is a clear trend of decreasing wind speeds as summer transitions into winter, with July boasting the lightest breezes at just 3.7 m/s (8 mph). The winds begin strong in the beginning of the year, peaking in January, but gradually ease as the year progresses, creating a more tranquil atmosphere in the heart of winter. This pattern highlights Ketchikan's dynamic climate, offering a serene yet invigorating experience for those who embrace the coastal chill.
The weather in Ketchikan 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 Ketchikan and find detailed weather information for every month.
In December, temperatures in Ketchikan typically range from a chilly -10°C (15°F) at night to a pleasant 9°C (49°F) during the day, with an average of 3°C (38°F). This month experiences significant rainfall, totaling 345 mm (13.6 in) over 21 days, and humidity remains high at 87%. In contrast, January sees similar minimum temperatures at -10°C (15°F), but the daytime highs drop slightly to 8°C (47°F), resulting in a marginally cooler average of 3°C (37°F). Precipitation decreases to 306 mm (12.1 in) over 18 days, with a humidity level of 86%. For more detailed insights, check out Ketchikan weather in January.
In comparing the weather between December and February, both months exhibit chilly temperatures, with December averaging around 3°C (38°F) and February slightly cooler at 2°C (36°F). The minimum temperatures remain consistent at -10°C (15°F) for both months, while maximum temperatures show a slight decline from 9°C (49°F) in December to 8°C (47°F) in February. Precipitation levels differ significantly, with December receiving 345 mm (13.6 in) over 21 days compared to February's 168 mm (6.6 in) spread over 14 days, indicating a drier climate in February. Additionally, humidity levels are comparable, at 87% for December and 85% for February. For more detailed insights, you can check Ketchikan weather in February.
In December, Ketchikan experiences colder temperatures, with a minimum of -10°C (15°F) and an average of 3°C (38°F), while March sees slightly milder conditions, with temperatures ranging from -4°C (25°F) to an average of 4°C (39°F). Additionally, December is quite wet, with precipitation totaling 345 mm (13.6 in) over 21 days, compared to March's 221 mm (8.7 in) and 19 rainy days. Humidity levels are also comparable, sitting at 87% in December and slightly lower at 84% in March. For a closer look at what to expect, you can check out Ketchikan weather in March.
In comparing the weather of December and April, December showcases a chillier climate with temperatures ranging from a minimum of -10°C (15°F) to a maximum of 9°C (49°F), while April offers a milder experience with temperatures varying from 0°C (32°F) to 14°C (57°F). Precipitation is higher in December, totaling 345 mm (13.6 in) over 21 days, compared to April's 218 mm (8.6 in) across 16 days. Both months experience high humidity, but December is slightly more humid at 87%, while April sits at 85%. For a more detailed look at April weather, you can check out Ketchikan weather in April.
December's weather stands in stark contrast to that of May. With temperatures hovering between a chilly -10°C (15°F) and a mild 9°C (49°F), December is characterized by its cold, damp conditions, averaging 3°C (38°F). The month experiences significant precipitation, with 345 mm (13.6 in) falling over 21 days, contributing to a high humidity level of 87%.
In comparison, May welcomes a more temperate climate, where temperatures range from a minimum of 4°C (40°F) to a pleasant maximum of 18°C (65°F), with an average of 9°C (48°F). The precipitation is notably reduced, totaling 141 mm (5.6 in) over 15 days and resulting in a lower humidity of 81%. For more insights into the weather conditions in May, check out Ketchikan weather in May.
December and June present markedly different weather conditions. In December, temperatures can plummet as low as -10°C (15°F), with an average of 3°C (38°F) and a maximum of 9°C (49°F). The month is characterized by high humidity at 87% and substantial precipitation, totaling 345 mm (13.6 in) across 21 days. In contrast, June experiences milder temperatures, with a minimum of 7°C (44°F), an average of 11°C (53°F), and a maximum of 22°C (72°F). Though it remains humid at 81%, June sees less precipitation, totaling 216 mm (8.5 in) over 18 days. For more detailed information, check out Ketchikan weather in June.
In December, Ketchikan experiences a much colder climate, with temperatures ranging from a chilling -10°C (15°F) to a maximum of 9°C (49°F) and an average of 3°C (38°F). The month is characterized by significant precipitation, totaling 345 mm (13.6 in) over 21 days, coupled with high humidity at 87%. In contrast, July brings milder temperatures, ranging from a minimum of 10°C (50°F) to a comfortable maximum of 22°C (71°F), with an average of 14°C (57°F). Precipitation during this month is notably less, totaling 162 mm (6.4 in) over just 14 days, while humidity remains relatively high at 90%. For more detailed information, check out Ketchikan weather in July.
December and August in Ketchikan showcase striking contrasts in weather. December experiences much colder temperatures, with a minimum of -10°C (15°F) and an average of just 3°C (38°F), while August offers a milder climate, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (72°F). Precipitation is abundant in both months, but December receives slightly more at 345 mm (13.6 in) over 21 days compared to August's 302 mm (11.9 in) over 17 days. Additionally, humidity is high in both months, peaking at 92% in August versus 87% in December. For more detailed information, you can explore the specifics about Ketchikan weather in August.
The weather in December presents a stark contrast to that of September. In December, temperatures can drop as low as -10°C (15°F), with an average of just 3°C (38°F) and highs of only 9°C (49°F). This colder month also sees significant precipitation, measuring 345 mm (13.6 in) over approximately 21 days, coupled with high humidity levels at 87%. In comparison, September offers milder conditions, with temperatures ranging from a minimum of 8°C (46°F) to an average of 12°C (55°F) and a maximum of 19°C (67°F). While September still experiences notable rainfall of 302 mm (11.9 in) across about 17 days, the humidity is slightly higher at 92%. For more insights on the September climate, you can check Ketchikan weather in September.
In comparing the weather of October and December, we see a significant drop in temperatures as we transition into winter. October experiences milder conditions with average temperatures ranging from a minimum of 3°C (38°F) to a maximum of 14°C (57°F), while December's temperatures plummet, featuring a minimum of -10°C (15°F) and a maximum of 9°C (49°F). Precipitation levels are similar, with December recording 345 mm (13.6 in) across 21 days and October slightly lower at 331 mm (13.0 in) over 20 days. Notably, humidity is high in both months, though it is slightly lower in December at 87% compared to October’s 91%. For more detailed weather information specific to October, you can visit Ketchikan weather in October.
December weather in Ketchikan contrasts with November, displaying a notable drop in temperature. While November's temperatures range from a minimum of 0°C (32°F) to a maximum of 11°C (51°F) with an average of 6°C (43°F), December brings colder conditions, with temperatures dipping as low as -10°C (15°F), and averaging just 3°C (38°F), peaking at 9°C (49°F). In addition to the cooler temperatures, December sees slightly less precipitation than November, with 345 mm (13.6 in) over 21 days compared to November’s 410 mm (16.1 in) across 23 days. Despite the decrease in rainfall, the humidity remains constant at 87% in both months. For a more detailed comparison, you can refer to Ketchikan weather in November.
December in Ketchikan brings a unique chill, setting itself apart from other months with its notably lower temperatures and increased precipitation. As the year draws to a close, the average temperature hovers around a brisk 3°C, while the frequent downpours result in nearly 345 mm of rain spread across 21 days, contributing to the region's characteristic high humidity of 87%. This creates a moody, atmospheric backdrop that contrasts with the milder, drier conditions of the preceding months. For those curious about the broader climate patterns affecting this stunning Alaskan town, more insights can be found at Ketchikan Climate.