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January Weather in Dover, United States

Last updated: June 24, 2025

In January, the average temperature in Dover, United States hovers around 0°C (32°F), creating a chilly atmosphere. Expect minimum temperatures to dip as low as -13°C (9°F), while the highs can reach up to 8°C (46°F). During this month, be prepared for 118 mm (4.6 in) of precipitation spread over 15 days, leading to a damp and cool environment with an average humidity of 95%.

January Temperature in Dover

In January in Dover, the average temperature is 0°C (32°F). The maximum can reach 8°C (46°F), while the minimum can drop as low as -13°C (9°F). Be prepared for chilly weather and pack accordingly if you're planning to travel during this time.

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 0°C (32°F), with highs reaching up to 8°C (46°F) and lows dropping to around -13°C (9°F).
JanFebMarAprMayJunJulAugSepOctNovDec312836435360707161483933
Data source: Temperature data for Dover 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 Dover

In Dover in January, the precipitation amount is 118 mm (4.6 in) over the course of 15 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 118 mm (4.6 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec1181158983593682758106132145
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Dover

In Dover in January, humidity is 95%. With an average temperature of 0°C (32°F), this humidity feels like walking through a thick fog, making each breath feel heavy and damp, while the chill in the air adds an extra layer of discomfort for traveling.

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 95%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%91%88%83%80%82%71%71%85%90%96%
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 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 Dover, you can visit 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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246789997432
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.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)118 mm (4.6 inches)95%low
February Weather-2°C (29°F)115 mm (4.5 inches)93%moderate
March Weather2°C (36°F)89 mm (3.5 inches)91%high
April Weather6°C (43°F)83 mm (3.3 inches)88%high
May Weather11°C (53°F)59 mm (2.3 inches)83%very high
June Weather16°C (60°F)36 mm (1.4 inches)80%very high
July Weather21°C (70°F)8 mm (0.3 inches)82%very high
August Weather22°C (71°F)27 mm (1.1 inches)71%very high
September Weather16°C (61°F)58 mm (2.3 inches)71%high
October Weather9°C (48°F)106 mm (4.2 inches)85%moderate
November Weather4°C (39°F)132 mm (5.2 inches)90%moderate
December Weather1°C (33°F)145 mm (5.7 inches)96%low

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