January Weather in Wilmington, United States

Last updated: June 24, 2025

In January, the average temperature in Wilmington, United States hovers around 0°C (32°F). However, temperatures can dip as low as -25°C (-12°F) and rise to a maximum of 20°C (69°F). The region experiences an average precipitation of 79 mm (3.1 in) over 9 days, coupled with a high average humidity of 88%. Prepare accordingly for this chilly, damp climate!

January Temperature in Wilmington

In January in Wilmington, the average temperature is 0°C (32°F). The maximum can reach 20°C (69°F), while the minimum can be as low as -25°C (-12°F). Be prepared for a wide range of temperatures and pack accordingly when traveling during this time.

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

The chart illustrates January temperature patterns in Wilmington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wilmington, January typically has an average temperature of 0°C (32°F), with highs reaching up to 20°C (69°F) and lows dropping to around -25°C (-12°F).

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

January Precipitation in Wilmington

In Wilmington in January, the precipitation amount is 79 mm (3.1 in) spread over 9 days.

January Precipitation Trends in Wilmington

The chart displays monthly precipitation patterns in Wilmington, 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 Wilmington, January typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Wilmington

In Wilmington in January, humidity is 88%. With an average temperature of 0°C (32°F), this humidity feels like a chilly, damp blanket enveloping you, making travel uncomfortable as every breath seems to carry the weight of the cold moisture, turning each step into a struggle against the biting chill.

January Average Humidity in Wilmington

This chart illustrates the average monthly humidity levels in Wilmington, 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 Wilmington is approximately 88%, 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 Wilmington

In Wilmington 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 Wilmington, you can check the information here.

Maximum UV Index Levels in Wilmington for January

The chart shows the monthly maximum UV Index (UVI) for Wilmington 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 Wilmington typically reaches 3, which falls under the moderate exposure category.

Data source: Wilmington 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 Wilmington Compares to Other Months

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

This table compares monthly weather conditions in Wilmington, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	79 mm (3.1 inches)	88%	moderate
February Weather	2°C (35°F)	106 mm (4.2 inches)	88%	moderate
March Weather	6°C (44°F)	128 mm (5.0 inches)	87%	high
April Weather	11°C (53°F)	120 mm (4.7 inches)	85%	very high
May Weather	18°C (65°F)	124 mm (4.9 inches)	81%	very high
June Weather	22°C (72°F)	129 mm (5.1 inches)	82%	very high
July Weather	24°C (76°F)	133 mm (5.2 inches)	81%	very high
August Weather	23°C (74°F)	86 mm (3.4 inches)	73%	very high
September Weather	21°C (69°F)	84 mm (3.3 inches)	73%	very high
October Weather	14°C (58°F)	97 mm (3.8 inches)	78%	high
November Weather	6°C (43°F)	96 mm (3.8 inches)	89%	moderate
December Weather	3°C (37°F)	108 mm (4.2 inches)	87%	moderate