Last updated: February 24, 2025
In December, New Castle, United States experiences a dynamic winter climate characterized by a maximum temperature reaching 15°C (59°F) and a stark average hovering around 1°C (34°F). The chill intensifies with a minimum temperature plummeting to -19°C (-1°F), setting a dramatic backdrop for the festive season. Residents can expect 133 mm (5.2 in) of precipitation over approximately 10 days, contributing to a notably humid atmosphere with levels soaring to 81%. This blend of cold temperatures and frequent dampness underscores the need for warm attire and cozy indoor activities as the year comes to a close.
As December sets in, New Castle, United States experiences a chill that climaxes the winter season, with temperatures dipping to a minimum of -19°C (-1°F). The average temperature hovers around 1°C (34°F), signaling the onset of more frigid days. While daytime highs can reach a modest 15°C (59°F), these values mark a stark contrast to the milder temperatures previously felt in November, which exhibited an average of 6°C (43°F). This month captures the essence of winter, as the city transitions from the cool, crisp air of autumn to the depths of winter's embrace, reminding residents to bundle up for the colder days ahead.
In December, New Castle experiences notable precipitation, totaling 133 mm (5.2 in), marking it as one of the wetter months of the year. This substantial amount of rain falls over 10 days, which is consistent with the average precipitation pattern seen in the preceding months. Notably, December follows November's 108 mm (4.3 in), showcasing a slight increase in precipitation. The steady rainfall during this month often brings a comforting, wintry vibe, making it an essential part of the region's climate transition into the new year. As winter approaches, these trends highlight the ongoing variability in New Castle’s weather, with December standing out as a period of significant moisture compared to the drier summer months.
As December settles in New Castle, the humidity levels reflect a typical trend for the season, measuring a comfortable 81%. This marks a slight drop compared to the more humid earlier months, such as January and November, which peak at 86% and 84% respectively. Throughout the year, New Castle experiences a gradual decline in humidity from the winter months, with the highest readings seen in the early winter and late autumn, while the summer months enjoy a drier atmosphere, dropping to 66% in August. The transition into December suggests a shift towards the wetter, cooler midwinter conditions, offering a cozy end to the year as the city prepares for the chill of January.
In New Castle, United States, December features a low UV Index of 2, marking a drop in sun intensity as the year comes to a close. This trend of diminishing UV exposure is consistent with the transition from the high levels seen in the summer months, where values peaked at 9 and 10 in May and June, respectively. As the winter months set in, the burn time extends to 45 minutes, offering more leeway for outdoor activities without the immediate concern of sun damage. This seasonal shift emphasizes the importance of staying vigilant about UV exposure during warmer months, while December’s gentle rays allow for a more relaxed approach. For further details on UV levels throughout the year, visit New Castle UV Index.
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December in New Castle ushers in a subtle shift in sunshine hours as the year winds down, with the city basking in 176 hours of sunlight. This marks a noteworthy decline from the vibrant summer months, where July and August bask in nearly 340 hours each. As autumn sets in, sunshine hours gradually decrease, contributing to a cozy atmosphere reflective of the season. Compared to earlier months such as May, with its impressive 295 hours, December sees a drop in brightness, yet it still offers a respectable number of sunny days, allowing residents to enjoy the festive spirit against a backdrop of crisp winter air. The trend reveals a clear transition from the sun-drenched peaks of mid-year to the softer glimmers of late fall, reminding us of nature's cyclical rhythm.
In New Castle, United States, December tends to usher in a notably lower likelihood of sunny weather, with a mere 32% chance of sunshine. This figure aligns with the general decline in sunny days as the year winds down, contrasting sharply with the brighter days of March, which boasts a high of 61% sunshine. Interestingly, while November shows a more promising 54% chance of sun, it's evident that the onset of winter in December brings a significant drop in clear skies, similar to the pattern observed during the summer months of July and August, which also register at 32%. Overall, December's weather can be characterized by its increasing cloud cover, making sunny days a rare delight.
In New Castle, United States, December marks a continuation of the shorter daylight hours characteristic of late fall, with only 9 hours of daylight available. This decline in daylight begins in November and remains consistent through December, reflecting a trend of decreasing sunlight as winter sets in. As the year progresses from spring to summer, daylight hours reach a peak of 15 hours in June, before gradually tapering down through the autumn months. The cycle then returns to its winter pattern, where daylight dips to a brief low in both December and January. As we look forward to the new year, the promise of gradually increasing daylight in January (also 9 hours) offers a glimmer of hope for longer, brighter days ahead.
As December settles in New Castle, the wind takes on a steady presence, with an average speed of 4.6 m/s (10 mph), mirroring the gentle breezes of November. The closing month of the year shows a slight increase in wind activity compared to the summer lull, when July and August recorded their lowest averages of 3.5 m/s (8 mph) and 3.3 m/s (7 mph) respectively. The transition from fall to winter brings a refreshing shift, reviving wind speeds that fluctuate between 4.1 m/s (9 mph) in June and a peak of 5.2 m/s (12 mph) in March. As the year winds down, December’s breezy charm offers a comforting reminder of nature’s rhythm, creating a blend of tranquility and anticipation for the colder months ahead.
The weather in New Castle 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 New Castle and find detailed weather information for every month.
December and January weather exhibit some notable differences, particularly in temperature and precipitation. In December, the average temperature is around 1°C (34°F), with a maximum of 15°C (59°F) and a minimum reaching as low as -19°C (-1°F). The month sees a total precipitation of 133 mm (5.2 in) over 10 days, resulting in a humidity level of 81%. Contrastingly, January experiences slightly colder temperatures, with an average of -1°C (30°F), while still allowing for daytime highs of 17°C (64°F) and similar lows at -19°C (-2°F). Furthermore, January's precipitation decreases to 79 mm (3.1 in) over just 8 days, accompanied by a slightly higher humidity of 86%. For further details on January weather, you can visit New Castle weather in January.
December and February share similar cold temperatures, with December typically experiencing slightly lower averages, ranging from a minimum of -19°C (-1°F) to a maximum of 15°C (59°F). In contrast, February’s temperatures range from a minimum of -16°C (4°F) to a maximum of 17°C (64°F), making February feel a touch warmer overall. Precipitation is another area where the two months differ; December sees more rainfall with 133 mm (5.2 in) over 10 days, while February has only 98 mm (3.9 in) over 11 days. Humidity levels are relatively comparable, with December at 81% and February slightly higher at 84%. For more detailed insights, check New Castle weather in February.
In comparing December and March weather, December typically experiences colder temperatures, with a minimum of -19°C (−1°F) and an average of 1°C (34°F), while March sees slightly milder conditions, with a minimum of -14°C (8°F) and an average of 2°C (36°F). Despite both months having similar levels of precipitation, with December receiving 133 mm (5.2 in) and March 94 mm (3.7 in), December tends to be wetter overall, experiencing precipitation on 10 days, just like March. Humidity remains similar in both months, hovering around 81-82%. For more detailed insights, you can visit New Castle weather in March.
When comparing the weather in December and April, we see a notable shift in temperatures and precipitation patterns. December experiences cooler conditions, with average temperatures around 1°C (34°F) and a maximum of 15°C (59°F), alongside relatively high humidity at 81%. In contrast, April brings milder weather with average temperatures rising to 8°C (46°F) and a peak of 24°C (76°F), while humidity remains slightly lower at 80%. Precipitation also varies, with December recording 133 mm (5.2 in) over 10 days, compared to April's 143 mm (5.6 in) across 13 days. For more detailed insights on the April weather, you can explore New Castle weather in April.
December and May present contrasting weather patterns, highlighting the seasonal transition. In December, temperatures can plummet to a minimum of -19°C (–1°F), with an average temperature of about 1°C (34°F) and a maximum reaching 15°C (59°F). This month also experiences frequent precipitation, totaling 133 mm (5.2 in) over approximately 10 days, accompanied by high humidity at 81%.
In contrast, May ushers in a milder climate, with a minimum temperature of 2°C (37°F) and an average of 13°C (55°F), peaking at a pleasant 27°C (82°F). Rainfall during this month is less intense, measuring 83 mm (3.3 in) over roughly 11 days, and the humidity decreases to 72%. For those interested in more details, check out the New Castle weather in May.
December and June present stark contrasts in weather. In December, temperatures can plummet to a minimum of -19°C (1°F), with an average of 1°C (34°F) and a maximum of 15°C (59°F), making it a cold and brisk month. Precipitation is relatively high at 133 mm (5.2 in) across about 10 days, coupled with high humidity at 81%. In comparison, June brings more moderate temperatures, with a minimum of 8°C (47°F), an average of 18°C (65°F), and a pleasant maximum of 30°C (86°F). Precipitation is lower at 88 mm (3.5 in) over the same 10 days, and humidity decreases to 72%, allowing for a warmer and more comfortable feel. To learn more about the specific conditions in June, you can explore New Castle weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures can plunge as low as -19°C (−1°F), while the average hovers around 1°C (34°F) and peaks at 15°C (59°F). This month also sees significant precipitation, with around 133 mm (5.2 inches) falling over approximately 10 days, accompanied by high humidity at 81%. In contrast, July boasts much warmer averages, ranging from a minimum of 13°C (56°F) to a maximum of 31°C (88°F), with an average temperature of 22°C (71°F). Precipitation is slightly lower at 123 mm (4.8 inches) over 12 days, and humidity is also lower, at 67%. For a closer look at the specifics, you can check New Castle weather in July.
December and August present starkly contrasting weather conditions. In December, temperatures can plummet to a minimum of -19°C (−1°F), with an average temperature around 1°C (34°F) and a maximum reaching 15°C (59°F). This month typically sees higher precipitation levels, averaging 133 mm (5.2 in) over about 10 days, accompanied by a high humidity of 81%. In comparison, August boasts much warmer temperatures, with a minimum of 13°C (55°F), an average of 22°C (71°F), and a maximum of 31°C (88°F). Precipitation in August is lighter, totaling 71 mm (2.8 in) over 9 days, and the humidity is comparatively lower at 66%. For more detailed insights, you can check New Castle weather in August.
In December, temperatures can plunge to a low of -19°C (-1°F) and average around 1°C (34°F), with a maximum of 15°C (59°F). This month also sees significant precipitation at 133 mm (5.2 in) over about 10 days, and the humidity level is quite high at 81%. In contrast, September experiences much milder conditions, with temperatures ranging from a minimum of 7°C (46°F) to an average of 18°C (65°F) and peaking at a warm 30°C (86°F). Precipitation is lower in September, totaling 78 mm (3.1 in) across 8 days, along with a slightly lower humidity of 71%. For more details, you can explore New Castle weather in September.
In comparing the weather of December and October, there is a stark contrast in temperature and conditions. December experiences a significant drop in temperature, with minimums reaching -19°C (1°F) and a chilly average of 1°C (34°F), while October enjoys milder temperatures, with lows around 1°C (34°F) and average highs of 13°C (56°F). Precipitation is relatively similar, with December receiving 133 mm (5.2 in) over 10 days compared to October's 142 mm (5.6 in) over 11 days, but the humidity is slightly higher in December at 81% versus October's 78%. For a more detailed look at October's weather, you can visit New Castle weather in October.
In comparing the weather between December and November, December experiences colder temperatures with a minimum of -19°C (−1°F) and an average of 1°C (34°F), whereas November has milder temperatures, ranging from a minimum of -12°C (11°F) to an average of 6°C (43°F). Additionally, while November sees a maximum temperature of 20°C (69°F), December peaks at a relatively lower maximum of 15°C (59°F). Precipitation in December is slightly higher at 133 mm (5.2 in) over approximately 10 days, compared to November's 108 mm (4.3 in) across 11 days. Humidity levels also remain high in both months, with December at 81% and November at 84%. For more detailed information, you can check New Castle weather in November.
December in New Castle ushers in a dramatic shift in weather, transforming the landscape with its colder temperatures and increased humidity. As the month progresses, residents experience a blend of chilly days, making this time distinctly different from the mild conditions of the preceding months. With an average humidity of 81% and around 10 days of precipitation contributing to a total of 133 mm, December often feels damp and brisk. This month’s temperature fluctuations—from mild highs to an occasional frosty low—remind us that winter is truly underway. For a deeper dive into the patterns and trends of New Castle's climate, explore this link: New Castle Climate.