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January Weather in Newcastle, United States

Last updated: June 24, 2025

In January, the average temperature in Newcastle, United States hovers around -3°C (27°F). Expect chilly conditions with minimum temperatures plummeting to -23°C (-9°F), while highs can reach a mild 13°C (56°F). With an average humidity of 85%, it’s important to stay prepared for the wet weather, as 87 mm (3.4 in) of precipitation can fall over the course of 8 days.

January Temperature in Newcastle

In January in Newcastle, the average temperature is -3°C (27°F). The maximum can reach 13°C (56°F), while the minimum can drop as low as -23°C (-9°F). It's advisable to pack warm clothing and be prepared for a wide range of temperatures if you're planning to travel during this time.

January Weather in Newcastle: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Newcastle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newcastle, January typically has an average temperature of -3°C (27°F), with highs reaching up to 13°C (56°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec272834445465707063534030
Data source: Temperature data for Newcastle 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 Newcastle

In Newcastle in January, the precipitation amount is 87 mm (3.4 in), which occurs over a span of 8 days.

January Precipitation Trends in Newcastle

The chart displays monthly precipitation patterns in Newcastle, 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. In Newcastle, January typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec87897412275651057776128111120
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Newcastle

In Newcastle in January humidity is 85%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps through layers of clothing, making travel seem daunting and the cold air sting your skin.

January Average Humidity in Newcastle

This chart illustrates the average monthly humidity levels in Newcastle, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Newcastle is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%84%79%79%86%85%83%80%77%80%81%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Newcastle

In Newcastle in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Newcastle, you can visit Hourly UV Index in Newcastle.

Maximum UV Index Levels in Newcastle for January

The chart shows the monthly maximum UV Index (UVI) for Newcastle 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. In January, the maximum UV index in Newcastle typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Newcastle 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.

How January Weather in Newcastle Compares to Other Months

Weather in Newcastle varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Newcastle, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Newcastle, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)87 mm (3.4 inches)85%low
February Weather-2°C (28°F)88 mm (3.5 inches)86%moderate
March Weather1°C (34°F)73 mm (2.9 inches)84%moderate
April Weather7°C (44°F)122 mm (4.8 inches)79%high
May Weather12°C (54°F)75 mm (2.9 inches)79%very high
June Weather18°C (65°F)65 mm (2.6 inches)86%very high
July Weather21°C (71°F)105 mm (4.1 inches)85%very high
August Weather21°C (71°F)76 mm (3.0 inches)83%very high
September Weather17°C (63°F)76 mm (3.0 inches)80%high
October Weather11°C (53°F)128 mm (5.0 inches)77%moderate
November Weather4°C (40°F)111 mm (4.4 inches)80%moderate
December Weather-1°C (31°F)120 mm (4.7 inches)81%low

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