January Weather in New Castle, United States

Last updated: February 24, 2025

January in New Castle, United States, brings a chilly climate, with average temperatures hovering around -1°C (30°F) and dipping to a minimum of -19°C (-2°F), while occasionally peaking at a mild 17°C (64°F). This month is marked by high humidity levels at 86%, contributing to a damp atmosphere. Residents can expect 79 mm (3.1 in) of precipitation over 8 days, making it one of the wetter months in the area. Despite the cold, January's fluctuating temperatures can provide a unique and refreshing winter experience for those who embrace the season.

January Temperature in New Castle

In January, New Castle, United States experiences harsh winter temperatures, with nighttime lows plunging to a brisk -19°C (-2°F), while daytime averages hover around a chilly -1°C (30°F). Despite this deep winter chill, temperatures can occasionally rise to a mild 17°C (64°F), hinting at the gradual transition towards the approaching spring. This month sets the stage for a notable climatic trend: as the year progresses, temperatures consistently rise, with February still clinging to the sub-zero marks, while March and April begin to show welcome signs of warmth. The shift to milder temperatures continues into May and June, ultimately reaching a peak in the summer months. Thus, January serves as a pivotal moment in New Castle’s annual temperature cycle, showcasing its resilient winter character while foreshadowing the vibrant warmth to come.

January Weather in New Castle: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in New Castle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec303236465565717165554334
Data source: Temperature data for New Castle generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in New Castle

January in New Castle brings a moderate precipitation total of 79 mm (3.1 in) over approximately 8 wet days. This sets the stage for a winter month where the rains are relatively light compared to the following months; for instance, February and March see an increase in rainfall, reaching 98 mm (3.9 in) and 94 mm (3.7 in) respectively. As spring approaches, April brings a significant uptick, with precipitation soaring to 143 mm (5.6 in) across 13 days, marking it as one of the wettest months of the year. Interestingly, January serves as a precursor to the wetter periods, providing a foundation for the annual precipitation trends that peak later in the spring and fall. The consistent pattern of rainfall supports a diverse ecosystem, setting the tone for the seasonal shifts to come.

January Precipitation Trends in New Castle

The chart displays monthly precipitation patterns in New Castle, with values for each month alongside January's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec79989414383881237178143108133
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in New Castle

In New Castle, United States, January boasts a high humidity level of 86%, marking it as one of the most humid months of the year. This trend of elevated humidity begins to wane as the season progresses, with February and March dropping slightly to 84% and 82%, respectively. As spring approaches, humidity continues to decrease, reaching its lowest point in the summer months with July and August at 67% and 66%. However, the arrival of fall brings back the moisture, with October rising to 78% and November seeing another spike at 84%. By December, humidity settles at a notable 81%, creating a cyclical pattern characterized by a peak in winter and gradual dips towards summer before the humidity rises again in the fall. This rhythmic shift illustrates New Castle's unique climate dynamics, where seasons significantly influence humidity levels throughout the year.

January Average Humidity in New Castle

This chart illustrates the average monthly humidity levels in New Castle, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in New Castle

In New Castle, United States, January starts off the year with a low UV Index of 2, indicating a burn time of 45 minutes—ideal for outdoor activities without excessive sun protection. As the months progress, the UV Index gradually increases, peaking at 10 in June, where intense sun exposure significantly reduces burn time to just 15 minutes. This pattern continues through July and August, showcasing the peak summer months delivering very high UV levels. By September, the index dips again to 7, reflecting the transition into autumn. December and January wrap up the year with low UV levels, similar to the beginning of the year, highlighting the seasonal shifts in sun exposure. Understanding these trends can help you plan your outdoor time effectively—check out the full details at New Castle UV Index.

Maximum UV Index Levels in New Castle for January

The chart shows the monthly maximum UV Index (UVI) for New Castle in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: New Castle January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in New Castle

In New Castle, United States, January marks the beginning of the year with a modest 150 hours of sunshine, setting the stage for a gradual transition into brighter days. As winter recedes, February ushers in an increase to 183 hours, hinting at the approaching spring. March revitalizes the landscape with 256 hours, followed closely by April's 245 hours, as the sun begins to reclaim its dominance. The peak of sunny brilliance arrives in the summer months, with June, July, and August basking in 330, 335, and 337 hours, respectively. This trend highlights the community's vibrant summer spirit, transitioning into a slower pace in September with 285 hours, before tapering off again in the autumn months. By the end of the year, November and December bring 193 and 176 hours of sunlight, reflecting a natural ebb and flow of luminosity that beautifully characterizes the changing seasons.

Monthly Sunshine Duration in New Castle: January Highlighted

The January sunshine duration represents the total number of hours New Castle experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec150h183h256h245h295h330h335h337h285h221h193h176h
Data source: New Castle January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in New Castle During January

In New Castle, United States, the likelihood of sunny weather in January hovers around 42%, making it a relatively bright start to the year. Interestingly, January's sunshine potential is notably higher than what is observed in February, which drops to 35%, but it falls short compared to the sunnier March, which boasts a healthy 61%. As winter transitions into spring, the trends reveal that while January offers decent chances for sun, the subsequent months fluctuate, with April and May also hovering in the 40% range. Overall, while January may usher in more sunshine than its immediate predecessor, it still maintains a modest position in the annual sunshine hierarchy, hinting at the warmth and brightness that are just around the corner.

Percentage of Sunny Days in January in New Castle

The chart illustrates the percentage of sunny days in New Castle throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often New Castle experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%35%61%40%38%40%32%32%44%38%54%32%
Data source: New Castle January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in New Castle in January

In January, New Castle, United States, experiences 9 hours of daylight, a period that marks the heart of winter's grasp. As the days turn towards February, the sunlight gently increases to 10 hours, hinting at the impending shift towards spring. By March, daylight extends to 11 hours, signaling a gradual awakening of nature. This upward trend continues through April with 13 hours, peaking in June at an inviting 15 hours of sunshine. However, as summer wanes, daylight begins its descent, dropping to 14 hours in July and 13 hours in August. The rhythm of the seasons is evident as September sees a decrease to 12 hours, followed by October's return to 10 hours. By November and December, daylight shrinks once more to 9 hours, closing the cycle and ushering in the reflective stillness of winter. This pattern not only highlights the shifting seasons but also evokes the beauty of nature's endless transformation throughout the year.

Average Daylight Hours in New Castle for January

The chart illustrates the variation in daylight duration in New Castle throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 23m10h 31m11h 57m13h 26m14h 40m15h 18m14h 57m13h 51m12h 26m10h 58m9h 41m9h 2m
Data source: New Castle daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in New Castle

In January, New Castle experiences a steady average wind speed of 4.7 m/s (11 mph), setting the tone for a winter that carries consistent breezes. This robust start remains stable into February, maintaining the same speed, while March brings a slight uptick to 5.2 m/s (12 mph), hinting at the seasonal shift as spring approaches. However, as the months progress, a gradual decline in wind speed becomes evident, with April through June recording lower averages—4.4 m/s (10 mph) down to 4.1 m/s (9 mph). The calm continues into summer when July and August see the lowest readings at 3.5 m/s (8 mph) and 3.3 m/s (7 mph), respectively. As fall arrives, winds begin to pick up again, reaching 4.4 m/s (10 mph) in October and slightly easing into November and December. This cycle of wind illustrates not only the rhythmic changes of the seasons but also a transition from invigorating winter gusts to the gentle whispers of summer, culminating in a refreshing return as the year draws to a close.

Average January Wind Speed in New Castle

The chart displays monthly wind speed patterns in New Castle, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.7 m/s4.75.24.44.24.13.53.33.94.44.64.6
Data source: New Castle January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in New Castle Compares to Other Months

The weather in New Castle changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January'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.

January and February exhibit similar temperature ranges, with February experiencing slightly milder average temperatures, transitioning from a January average of -1°C (30°F) to 0°C (32°F). While both months share the same maximum temperature of 17°C (64°F), January's minimum temperature dips a bit lower at -19°C (-2°F) compared to February’s -16°C (4°F). In terms of precipitation, February sees a slight increase with 98 mm (3.9 in) over 11 days, while January totals 79 mm (3.1 in) over 8 days. Humidity remains relatively stable, with January recording 86% and February slightly lower at 84%. For more detailed weather information, you can visit New Castle weather in February.

January and March exhibit notable differences in weather patterns. In January, temperatures reach a minimum of -19°C (-2°F) and an average of -1°C (30°F), while March sees slightly milder conditions with minimums around -14°C (8°F) and an average of 2°C (36°F). Both months feature maximum temperatures peaking at 17°C (63°F) to 17°C (64°F). January experiences 79 mm (3.1 in) of precipitation over 8 days, whereas March shows a slight increase in precipitation to 94 mm (3.7 in) across 10 days. Humidity levels are relatively high in both months, with January at 86% and March at 82%. For more specific insights into March weather, you can check New Castle weather in March.

In January, temperatures can drop to a chilling minimum of -19°C (-2°F), with an average of -1°C (30°F) and a maximum reaching 17°C (64°F). The month experiences 79 mm (3.1 in) of precipitation over approximately eight days, accompanied by high humidity levels at 86%. In contrast, April brings a noticeable warmth, with minimum temperatures around -2°C (29°F), an average of 8°C (46°F), and maximums soaring to 24°C (76°F). Precipitation increases to 143 mm (5.6 in), spread across about 13 days, while humidity slightly decreases to 80%. For more specifics on April weather, check out New Castle weather in April.

In comparing the weather of January and May, January is characterized by much colder temperatures, with average lows dipping to -19°C (-2°F) and maxing out at 17°C (64°F). Meanwhile, May presents a significant warming trend, featuring average temperatures ranging from a low of 2°C (37°F) to a high of 27°C (82°F). Precipitation levels in January are slightly lower at 79 mm (3.1 in) over 8 days, whereas May sees a comparable amount of rainfall at 83 mm (3.3 in) over 11 days. Humidity is also noticeably higher in January, at 86%, compared to May's 72%, giving a clearer indication of spring's milder and more pleasant conditions. For a detailed look at what to expect during this time, check out New Castle weather in May.

In January, the weather is characterized by frigid temperatures, with minimum readings dropping to -19°C (-2°F) and an average of -1°C (30°F). The month experiences considerable humidity at 86%, alongside 79 mm (3.1 in) of precipitation over 8 days. By contrast, June brings a much warmer and more pleasant climate, with minimum temperatures averaging 8°C (47°F) and reaching up to 30°C (86°F) on warmer days. The humidity decreases to 72%, and while precipitation slightly increases to 88 mm (3.5 in) over 10 days, the overall weather feels significantly more inviting. For a closer look at June's climate specifics, visit New Castle weather in June.

In January, the weather is notably colder, with temperatures ranging from a minimum of -19°C (-2°F) to a maximum of 17°C (64°F) and an average of -1°C (30°F). The humidity is quite high at 86%, and the month experiences 79 mm (3.1 in) of precipitation over 8 days. In contrast, July brings much warmer temperatures, averaging 22°C (71°F) with lows of 13°C (56°F) and highs reaching 31°C (88°F). The humidity drops to 67%, and July sees increased precipitation, totaling 123 mm (4.8 in) across 12 days. For more insights into the warm weather, check New Castle weather in July.

January and August present stark contrasts in weather conditions. January experiences much colder temperatures, with average highs reaching just -1°C (30°F) and lows plummeting to -19°C (-2°F), accompanied by high humidity levels of 86%. In comparison, August enjoys a milder climate, featuring average temperatures ranging from a minimum of 13°C (55°F) to a maximum of 31°C (88°F), and a significantly lower humidity of 66%. Additionally, January has a higher precipitation total of 79 mm (3.1 in) over 8 days, compared to August's 71 mm (2.8 in) over 9 days, indicating a wetter yet colder winter month. For more details on August weather, check out New Castle weather in August.

January and September present a stark contrast in weather conditions. January's frigid temperatures can plunge to a minimum of -19°C (-2°F) with an average hovering around -1°C (30°F) and a maximum of 17°C (64°F). In contrast, September enjoys much milder temperatures, ranging from a minimum of 7°C (46°F) to an average of 18°C (65°F) and peaking at 30°C (86°F). Both months receive similar precipitation, averaging about 79 mm (3.1 in) over 8 days, but January’s high humidity at 86% makes the cold feel even more biting compared to September’s lower humidity level of 71%. For a closer look at what to expect, you can check New Castle weather in September.

In January, temperatures can plummet to as low as -19°C (-2°F), with an average of -1°C (30°F) and a maximum of 17°C (64°F). The month is marked by significant precipitation of 79 mm (3.1 in) over about 8 days, coupled with high humidity at 86%. In contrast, October features much milder weather, with lows around 1°C (34°F) and average temperatures of 13°C (56°F), peaking at a comfortable 25°C (78°F). Precipitation increases to 142 mm (5.6 in) across 11 days, though humidity is slightly lower at 78%. To explore more about the climate in October, you can visit New Castle weather in October.

January and November in New Castle present contrasting weather patterns. In January, temperatures can drop significantly, with a minimum of -19°C (-2°F) and an average of -1°C (30°F), while November sees milder conditions, with a minimum of -12°C (11°F) and an average of 6°C (43°F). Precipitation is more frequent in November, occurring over 11 days and totaling 108 mm (4.3 in), compared to January's 79 mm (3.1 in) over 8 days. Humidity levels are quite similar, with January at 86% and November slightly lower at 84%. For more details, you can explore New Castle weather in November.

In comparing the weather between January and December, both months experience extremely cold minimum temperatures, dipping to -19°C (-2°F) in January and -19°C (-1°F) in December. However, January sees an average temperature of -1°C (30°F), slightly cooler than December’s average of 1°C (34°F). The maximum temperatures are somewhat comparable, with January reaching up to 17°C (64°F) and December peaking at 15°C (59°F). Precipitation levels are notably higher in December, with 133 mm (5.2 in) over 10 days, compared to January's 79 mm (3.1 in) across 8 days. Humidity is relatively high in both months, at 86% in January and slightly lower at 81% in December. For more details on December weather, you can read more on New Castle weather in December.

Compare New Castle's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in New Castle

January in New Castle presents a stark contrast to the more temperate months of the year. As the coldest month, it brings chilly temperatures that can plunge to as low as -19°C while offering a fleeting glimpse of warmth with highs reaching 17°C. This significant temperature variation combined with high humidity levels of 86% often results in a damp atmosphere, making January feel especially brisk. Additionally, the month is marked by 79 mm of precipitation over 8 days, hinting at the occasional snow or rain, quite different from the drier and warmer conditions of late spring and summer. For a deeper understanding of this unique winter weather, visit New Castle Climate.