Last updated: February 24, 2025
December in Eugene, United States ushers in a tapestry of cool, crisp weather, characterized by an average temperature of 5°C (41°F) and a maximum reaching up to 18°C (65°F). Visitors can expect a chill in the air, particularly during the night when temperatures can plummet to a brisk -6°C (21°F). The month is also marked by considerable precipitation, totaling 180 mm (7.1 in) across 18 days, resulting in a notably humid atmosphere with levels around 87%. This blend of cool temperatures and frequent rainfall creates a unique winter wonderland, perfect for those who relish the beauty of a Pacific Northwest winter.
In December, Eugene experiences a transition into the chill of winter, characterized by temperatures that hover around -6°C (21°F) at their lowest, with average daytime highs reaching about 5°C (41°F). As the month progresses, residents can look forward to occasional warmer spells, with peaks hitting 18°C (65°F). This pattern marks a notable dip compared to the milder conditions of preceding months, reflecting a shift from late autumn's lingering warmth. The cool, crisp air invites cozy activities, making it an ideal time to embrace the festive season while marveling at the beauty of Eugene's winter landscapes.
December in Eugene ushers in a significant increase in precipitation, with 180 mm (7.1 in) of rain over the month and a higher frequency of rainy days, totaling 18. This marks a shift from the milder, drier conditions of the summer months, where July sees a mere 2 mm (0.1 in) of rain across no precipitation days. The end of the year showcases a trend of increasing moisture, with winter months like December and November recording some of the highest levels of rainfall, emphasizing Eugene's lush, green landscape fueled by consistent rainfall. As temperatures drop and days grow shorter, this uptick in precipitation prepares the region for a vibrant spring, indicating the cyclical nature of Eugene's climate.
As December unfolds in Eugene, the city experiences high humidity levels averaging 87%, mirroring the trend observed in November. This period marks the peak of moisture in the air, as the winter months consistently bring increased humidity, peaking in early winter and gradually tapering off as spring approaches. With the winter chill settling in, residents can expect the air to feel quite damp, contrasting sharply with the drier summer months, where humidity dips to as low as 67% in August. This cyclical pattern highlights Eugene's transition from the mild, humid autumn into the more intense dampness of winter, creating an atmospheric shift that colors the city's winter landscape.
In December, the UV Index in Eugene, Oregon, drops back to a low level of 2, reminiscent of January's mild sun exposure. With a burn time of 45 minutes, residents can enjoy the cool winter sun without significant risk to their skin. This trend marks a notable decrease from the intense UV exposure experienced in the summer months, where values soared to 10. As the year winds down, the gradual decline from moderate levels in late fall to the comforting safety of winter invites outdoor activities with minimal concern for UV-related harm. For a detailed overview and updates on UV radiation in Eugene, check out Eugene UV Index.
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In Eugene, the month of December brings a gentle transition as it wraps up the year with 122 hours of sunshine. While the days are noticeably shorter compared to the radiant heights of July, which boasts the year's peak at 394 hours, December still offers a significant amount of daylight just before the depths of winter. Notably, the sunshine hours in December show a decline from the vibrant fall months, where October enjoyed 226 hours and September basked in 281 hours of light. This gradual decrease emphasizes a seasonal pattern marked by shorter days and longer, cooler nights, creating a cozy atmosphere perfect for enjoying indoor pursuits and the festive spirit. As 2023 comes to a close, Eugene's December sunshine offers a final glimmer of warmth before the new year arrives.
In Eugene, Oregon, December ushers in the winter chill and a noticeable dip in sunny days, with only a 12% chance of sunshine. This trend aligns with the gradual decrease in sunlit hours leading up to the end of the year, following slightly more favorable conditions in the fall, where November boasts a 23% chance. As we reflect on monthly averages, it's clear that Eugene's weather transforms dramatically as winter approaches, with the more vibrant months of April through July reaching peaks in sunny probabilities of over 50%, all while December's shyness of sun foreshadows the cozy, cloudier days of winter ahead.
In Eugene, the daylight duration follows a predictable and rhythmic cycle throughout the year. Starting from a modest 8 hours in December, the days gradually lengthen, peaking at 15 hours during the summer months of June and July. The transition from winter to spring sees a significant increase in daylight, with February witnessing 10 hours and March reaching 11 hours, setting the stage for the vibrant long days of late spring and summer. As fall approaches, daylight begins to wane again, tapering off to 10 hours in October and returning to 9 hours in November, before plunging back to 8 hours in December. This cyclical pattern not only marks the changing seasons, but also enriches the experience of life in Eugene, offering both the cozy charm of winter nights and the exhilarating brightness of summer days.
In December, Eugene experiences a subtle increase in wind speed, averaging 2.4 m/s (5 mph), which marks the highest point for the year. This uptick follows a gradual trend observed throughout the autumn months, where winds consistently stayed around 2.1 m/s. Interestingly, while winter often brings stronger winds elsewhere, Eugene's December breezes are relatively mild, painting a picture of cool, crisp air perfect for outdoor activities without the harsh chill. As the year draws to a close, these gentle winds not only complement the season's festivities but also signal the calm before winter's potentially fiercer gales.
The weather in Eugene 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 Eugene and find detailed weather information for every month.
In December, the weather is relatively mild with an average temperature of 5°C (41°F), ranging from a minimum of -6°C (21°F) to a maximum of 18°C (65°F). The month sees significant precipitation at 180 mm (7.1 in) over 18 days, accompanied by a high humidity level of 87%. In contrast, January experiences slightly colder conditions, with a minimum temperature dropping to -12°C (11°F) while maintaining the same maximum of 18°C (65°F) and an average of 5°C (42°F). Precipitation decreases to 152 mm (6.0 in) spread over 15 days, along with a marginally lower humidity level of 84%. For more detailed information about the weather in January, you can visit Eugene weather in January.
December and February share similar temperature ranges, with both months experiencing minimums around -6°C (21°F) and average highs reaching approximately 5°C (41°F) in December and 5°C (41°F) to 19°C (67°F) in February. However, February tends to be slightly warmer with a maximum temperature of 19°C compared to December's 18°C. Precipitation levels are also notable, with December receiving 180 mm (7.1 in) over 18 days and February experiencing slightly higher precipitation at 197 mm (7.7 in) over the same number of days. Humidity remains high in both months, with December at 87% and February at 85%. For a more detailed look at weather conditions in February, you can check out Eugene weather in February.
December typically experiences colder temperatures, with a minimum of -6°C (21°F) and an average of 5°C (41°F), while March offers a slight improvement, featuring a minimum of -7°C (20°F) and an average of 7°C (45°F). The maximum temperatures in December can reach up to 18°C (65°F), but March often sees even warmer highs, peaking at 23°C (74°F). Precipitation is more frequent in December, with 180 mm (7.1 in) over 18 days compared to March's 139 mm (5.5 in) across 16 days, making March feel somewhat drier. Both months maintain high humidity levels, with December at 87% and March slightly lower at 86%. For a detailed look at March weather, check out Eugene weather in March.
December and April showcase a notable contrast in weather patterns. In December, temperatures range from a chilly -6°C (21°F) at their lowest to a mild 18°C (65°F) at their highest, with an average of 5°C (41°F). This month is characterized by high humidity at 87% and significant precipitation totaling 180 mm (7.1 in) over approximately 18 days. In comparison, April brings more moderate temperatures, with a minimum of -2°C (29°F) and a maximum of 28°C (83°F), averaging around 10°C (50°F). The precipitation in April is lower, at 134 mm (5.3 in) over about 14 days, and the humidity is slightly less at 83%. These differences mark April as a month of transition toward early spring warmth and drier conditions. For more detailed information, check out Eugene weather in April.
December and May present contrasting weather patterns. In December, temperatures range from a chilly minimum of -6°C (21°F) to a milder maximum of 18°C (65°F), with an average temperature of 5°C (41°F). The month sees significant rainfall, totaling 180 mm (7.1 in) spread across 18 days, along with high humidity levels at 87%. In contrast, May showcases a warmer climate, with temperatures ranging from a minimum of 1°C (34°F) to a pleasant maximum of 29°C (85°F), resulting in an average of 13°C (57°F). Rainfall is considerably less in May, at only 62 mm (2.5 in) over 9 days and a slightly lower humidity of 83%. For more details on this month’s weather, check out Eugene weather in May.
December and June present stark contrasts in weather. December is characterized by cooler temperatures, with a minimum of -6°C (21°F) and an average of 5°C (41°F), while June enjoys a milder climate, with temperatures ranging from a minimum of 5°C (42°F) to a maximum that can soar up to 44°C (111°F). Precipitation also varies significantly; December sees 180 mm (7.1 in) over 18 days, whereas June has only 41 mm (1.6 in) in just 6 days. Additionally, humidity levels remain high in December at 87%, compared to a slightly lower 83% in June. For more detailed insights, check out Eugene weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures can drop to a chilly -6°C (21°F) at night, with an average of 5°C (41°F) and highs reaching up to 18°C (65°F). This month is also characterized by significant precipitation, totaling 180 mm (7.1 in) over 18 days, accompanied by high humidity levels averaging 87%. In contrast, July boasts much warmer temperatures, with nighttime lows around 7°C (45°F) and daytime averages soaring to 20°C (69°F), peaking at a sweltering 37°C (99°F). Remarkably, July experiences minimal rainfall, with only 2 mm (0.1 in) occurring over the entire month and often no rainy days at all, and lower humidity at 78%. For a closer look at July's delightful weather, check out Eugene weather in July.
December and August present starkly contrasting weather patterns. In December, temperatures can drop to a minimum of -6°C (21°F), with an average of 5°C (41°F) and occasional highs of 18°C (65°F). This month is characterized by high humidity at 87% and considerable precipitation, averaging 180 mm (7.1 inches) over 18 days. Conversely, August is significantly warmer, with a minimum temperature of 7°C (44°F) and an average reaching 21°C (69°F), peaking at a scorching 40°C (104°F). The summer month enjoys a much drier climate, with only 5 mm (0.2 in) of precipitation falling across just 1 day. For more detailed insights, you can check Eugene weather in August.
December and September present strikingly different weather patterns. In December, temperatures range from a chilly minimum of -6°C (21°F) to an average of 5°C (41°F) and can peak at 18°C (65°F). The month is also characterized by significant precipitation, averaging 180 mm (7.1 in) over 18 days, accompanied by high humidity levels of 87%. In contrast, September boasts milder temperatures, with a minimum of 4°C (39°F), an average of 17°C (63°F), and maximum highs reaching up to 37°C (98°F). The precipitation in September is considerably lower at 76 mm (3.0 in) over just 6 days and with a humidity of 66%. For more detailed information, you can explore Eugene weather in September.
In comparing the weather of December and October, December tends to be much colder with average temperatures around 5°C (41°F) compared to October's warmer average of 11°C (53°F). The maximum temperatures in December peak at 18°C (65°F), while October can reach up to 28°C (82°F), indicating a significant shift as the year progresses. Additionally, December experiences higher precipitation levels at 180 mm (7.1 in) over 18 days, while October's precipitation is notably lower at 99 mm (3.9 in) over just 10 days. Humidity levels also rise in December to 87%, compared to 77% in October, contributing to the colder, more damp conditions typical of winter. For a closer look at October conditions, visit Eugene weather in October.
In comparing the weather between November and December, both months exhibit similar minimum temperatures, with December's low reaching -6°C (21°F) and November's at -6°C (22°F). However, December typically experiences colder average temperatures, averaging 5°C (41°F) compared to November's 8°C (46°F). Additionally, maximum temperatures are also slightly lower in December, peaking at 18°C (65°F) versus November's 21°C (70°F). Precipitation increases significantly in December, totaling 180 mm (7.1 in) over 18 days, in contrast to November's 141 mm (5.6 in) over 14 days. Both months maintain high humidity levels of 87%. For more insights, you can read about Eugene weather in November.
In December, Eugene experiences a distinct shift in weather compared to other months, characterized by cooler temperatures and increased precipitation. As the average temperature drops, the city often grapples with chilly days and crisp nights, making it essential to bundle up. The month is marked by frequent rainy days, contributing to a high humidity level that can make the air feel damp and brisk. This combination of weather elements creates a cozy ambiance, perfect for indoor activities and holiday festivities. For a deeper dive into Eugene's climate patterns, visit Eugene Climate.