January Weather in Newcastle, United States

Last updated: June 24, 2025

In Newcastle, United States, the average temperature in January hovers around -4°C (25°F), with extremes ranging from a chilly -28°C (-17°F) to a milder 13°C (55°F). Expect 15 mm (0.6 in) of precipitation spread across 5 days, contributing to an average humidity level of 73%. Bundle up and be prepared for a crisp, damp environment!

January Temperature in Newcastle

In January in Newcastle, the average temperature is -4°C (25°F), with maximums reaching 13°C (55°F) and minimums dropping as low as -28°C (-17°F). It's essential to pack warm clothing and prepare for temperature fluctuations 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 -4°C (25°F), with highs reaching up to 13°C (55°F) and lows dropping to around -28°C (-17°F).

Data source: Temperature data for Newcastle generated using information from the Copernicus Climate Change Service.

January Precipitation in Newcastle

In Newcastle in January, the precipitation amount is 15 mm (0.6 in) over the course of 5 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 15 mm (0.6 inches) of precipitation spread over approximately 5 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Newcastle

In Newcastle in January, humidity is 73%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that seeps through layers of clothing, making outdoor activities brisk and invigorating, yet a bit challenging for comfortable traveling.

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 73%, offering insight into how humid the weather typically is during this month.

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 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Newcastle, you can check the information here.

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 3, which falls under the moderate exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	15 mm (0.6 inches)	73%	moderate
February Weather	-6°C (22°F)	24 mm (1.0 inches)	78%	moderate
March Weather	3°C (37°F)	31 mm (1.2 inches)	64%	high
April Weather	6°C (43°F)	46 mm (1.8 inches)	66%	very high
May Weather	12°C (54°F)	63 mm (2.5 inches)	74%	very high
June Weather	20°C (68°F)	34 mm (1.3 inches)	84%	extreme
July Weather	24°C (75°F)	47 mm (1.8 inches)	85%	extreme
August Weather	22°C (71°F)	31 mm (1.2 inches)	85%	very high
September Weather	17°C (63°F)	30 mm (1.2 inches)	76%	very high
October Weather	7°C (44°F)	40 mm (1.6 inches)	71%	high
November Weather	2°C (36°F)	19 mm (0.8 inches)	73%	moderate
December Weather	-3°C (27°F)	24 mm (0.9 inches)	75%	low