January weather forecast
Dover, DE

The public Archives building in Dover, Delaware, between two large trees
The public Archives building in Dover, Delaware, between two large trees

Weather in January

January, the same as December, is a wintry winter month in Dover, Delaware, with an average temperature varying between 28.8°F (-1.8°C) and 39.7°F (4.3°C).

Temperature

The coldest month is January, with an average high-temperature of 39.7°F (4.3°C) and an average low-temperature of 28.8°F (-1.8°C).

Humidity

January, March, April and November, with an average relative humidity of 74%, are the least humid months in Dover.

Rainfall

January is the month with the least rainfall in Dover. Rain falls for 8.2 days and accumulates 1.46" (37mm) of precipitation.

Snowfall

January through March and December are months with snowfall in Dover. January is the month with the most snowfall in Dover. Snow falls for 3.5 days and accumulates 1.65" (42mm) of snow.

Daylight

In Dover, the average length of the day in January is 9h and 47min.
On the first day of January, sunrise is at 7:21 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:21 pm EST.

Sunshine

In January, the average sunshine in Dover is 5.3h.

UV index

The months with the lowest UV index in Dover are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Dover?

The coldest month in Dover, Delaware, is January, with an average high-temperature of 39.7°F (4.3°C) and an average low-temperature of 28.8°F (-1.8°C).

What are the least humid months in Dover?

The months with the lowest humidity are January, March, April and November, with an average relative humidity of 74%.

What is the average humidity in January in Dover?

The average relative humidity in January is 74%.

What is the driest month in Dover?

January is the month with the least rainfall in Dover, Delaware. Rain falls for 8.2 days and accumulates 1.46" (37mm) of precipitation.

How much does it rain in Dover in January?

In Dover, Delaware, during January, the rain falls for 8.2 days and regularly aggregates up to 1.46" (37mm) of precipitation.

What is the snowiest month in Dover?

January is the month with the most snowfall. Snow falls for 3.5 days and accumulates 1.65" (42mm) of snow.

How much does it snow in Dover in January?

In Dover, in January, snow falls for 3.5 days, with typically accumulated 1.65" (42mm) of snow.

How many hours of daylight does Dover have in January?

In Dover, the average day length in January is 9h and 47min.

When are sunrise and sunset in January in Dover?

On the first day of January in Dover, Delaware, sunrise is at 7:21 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:21 pm EST.

How long on average sun shines in January in Dover?

In Dover, the average sunshine duration in January is 5.3h.

When is the lowest UV index in Dover?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Dover.

What is the UV index intensity in January in Dover?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Dover, DE

Average temperature in January - Dover, DE
  • Average high temperature in January: 39.7°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in January: 28.8°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

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Average pressure in January
Dover, DE

Average pressure in January - Dover, DE
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Dover, DE

Average wind speed in January - Dover, DE
  • Average wind speed in January: 9.9mph

The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in January
Dover, DE

Average humidity in January - Dover, DE
  • Average humidity in January: 74%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in January
Dover, DE

Average rainfall in January - Dover, DE
  • Average rainfall in January: 1.46"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in January
Dover, DE

Average rainfall days in January - Dover, DE
  • Average rainfall days in January: 8.2 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.1 days).

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Average snowfall in January
Dover, DE

Average snowfall in January - Dover, DE
  • Average snowfall in January: 1.65"

The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in January
Dover, DE

Average snowfall days in January - Dover, DE
  • Average snowfall days in January: 3.5 days

The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in January /
Average sunshine in January
Dover, DE

Average daylight in January / Average sunshine in January - Dover, DE
  • Average daylight in January: 9h and 47min

The month with the longest days is June (Average daylight: 14h and 53min).
The month with the shortest days is December (Average daylight: 9h and 28min).

  • Average sunshine in January: 5h and 18min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in January
Dover, DE

Average sunshine days in January - Dover, DE
  • Average sunshine days in January: 19.3 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in January
Dover, DE

Average UV index in January - Dover, DE
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in January
Dover, DE

Average cloud cover in January - Dover, DE
  • Average cloud cover in January: 43

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in January
Dover, DE

Average visibility in January - Dover, DE
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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