January Weather in Dover, United States

Last updated: June 24, 2025

In January, the average temperature in Dover, United States hovers around 16°C (62°F). Expect a chilly minimum of around -4°C (26°F), while highs can reach a pleasant 29°C (85°F). With 41 mm (1.6 in) of precipitation spread over roughly 4 days, and an average humidity of 83%, it's a month that offers a mix of cool and comfortable days, perfect for a range of outdoor activities.

January Temperature in Dover

In January in Dover, the average temperature is 16°C (62°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as -4°C (26°F). Be prepared for a wide range of temperatures when planning your travels!

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

The chart illustrates January temperature patterns in Dover, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dover, January typically has an average temperature of 16°C (62°F), with highs reaching up to 29°C (85°F) and lows dropping to around -4°C (26°F).

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

January Precipitation in Dover

In Dover in January, the precipitation amount is 41 mm (1.6 in) over the course of 4 days.

January Precipitation Trends in Dover

The chart displays monthly precipitation patterns in Dover, 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 Dover, January typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 4 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 Dover

In Dover in January humidity is 83%. With an average temperature of 16°C (62°F), this humidity feels like a warm, sticky embrace that can make traveling feel a bit heavy, leaving you longing for refreshing breezes and shaded spots to relax in.

January Average Humidity in Dover

This chart illustrates the average monthly humidity levels in Dover, 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 Dover is approximately 83%, 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 Dover

In Dover in January, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Dover, you can refer to this Hourly UV Index in Dover.

Maximum UV Index Levels in Dover for January

The chart shows the monthly maximum UV Index (UVI) for Dover 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 Dover typically reaches 6, which falls under the high exposure category.

Data source: Dover 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 Dover Compares to Other Months

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

This table compares monthly weather conditions in Dover, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (62°F)	41 mm (1.6 inches)	83%	high
February Weather	20°C (67°F)	64 mm (2.5 inches)	80%	very high
March Weather	20°C (69°F)	18 mm (0.7 inches)	75%	very high
April Weather	23°C (74°F)	65 mm (2.6 inches)	68%	extreme
May Weather	26°C (78°F)	124 mm (4.9 inches)	65%	extreme
June Weather	27°C (81°F)	206 mm (8.1 inches)	73%	extreme
July Weather	28°C (82°F)	243 mm (9.6 inches)	77%	extreme
August Weather	28°C (82°F)	223 mm (8.8 inches)	80%	extreme
September Weather	27°C (81°F)	175 mm (6.9 inches)	83%	extreme
October Weather	25°C (78°F)	67 mm (2.6 inches)	83%	very high
November Weather	20°C (69°F)	45 mm (1.8 inches)	83%	high
December Weather	18°C (65°F)	62 mm (2.4 inches)	84%	moderate