January weather forecast
Delaware City, DE

Weather in January

January, like December, in Delaware City, Delaware, is another cold winter month, with an average temperature fluctuating between 26.8°F (-2.9°C) and 38.3°F (3.5°C).

Temperature

With an average high-temperature of 38.3°F (3.5°C) and an average low-temperature of 26.8°F (-2.9°C), January is the coldest month.

Humidity

The average relative humidity in January in Delaware City is 74%.

Rainfall

January is the month with the least rainfall in Delaware City. Rain falls for 7.8 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 4.3 days and typically aggregates up to 1.65" (42mm) of snow.

Ocean temperature

In Delaware City, Delaware, the average seawater temperature in January is 42.4°F (5.8°C).
Note: Swimming in 42.4°F (5.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In Delaware City, the average length of the day in January is 9h and 45min.
On the first day of January in Delaware City, Delaware, sunrise is at 7:22 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:21 pm EST.

Sunshine

In Delaware City, the average sunshine in January is 5.2h.

UV index

The months with the lowest UV index in Delaware City, Delaware, are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Delaware City?

With an average high-temperature of 38.3°F (3.5°C) and an average low-temperature of 26.8°F (-2.9°C), January is the coldest month.

What is the average humidity in January in Delaware City?

In Delaware City, Delaware, the average relative humidity in January is 74%.

What is the driest month in Delaware City?

January is the month with the least rainfall. Rain falls for 7.8 days and accumulates 1.54" (39mm) of precipitation.

How many days does it rain in January in Delaware City?

In Delaware City, in January, during 7.8 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

What is the snowiest month in Delaware City?

January is the month with the most snowfall in Delaware City. Snow falls for 4.3 days and accumulates 1.65" (42mm) of snow.

How many days does it snow in January in Delaware City?

In January, it is snowing for 4.3 days. Throughout January, 1.65" (42mm) of snow is accumulated.

What is the ocean temperature in January in Delaware City?

In January, the average ocean temperature in Delaware City, Delaware, is 42.4°F (5.8°C). Swimming in 42.4°F (5.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in January in Delaware City?

In January, the average day length in Delaware City is 9h and 45min.

What time are sunrise and sunset in January in Delaware City?

On the first day of January in Delaware City, Delaware, sunrise is at 7:22 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:21 pm EST.

How long on average sun shines in January in Delaware City?

The average sunshine duration in January in Delaware City, Delaware, is 5.2h.

What are the months with the lowest UV index in Delaware City?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Delaware City, Delaware.

What is the UV index intensity in January in Delaware City?

The average daily maximum UV index in January in Delaware City, Delaware, is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe 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
Delaware City, DE

Average temperature in January - Delaware City, DE
  • Average high temperature in January: 38.3°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in January: 26.8°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in January
Delaware City, DE

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

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Delaware City, DE

Average wind speed in January - Delaware City, DE
  • Average wind speed in January: 8.8mph

The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in January
Delaware City, DE

Average humidity in January - Delaware City, DE
  • Average humidity in January: 74%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in January
Delaware City, DE

Average rainfall in January - Delaware City, DE
  • Average rainfall in January: 1.54"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.54").

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Average rainfall days in January
Delaware City, DE

Average rainfall days in January - Delaware City, DE
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in January
Delaware City, DE

Average snowfall in January - Delaware City, DE
  • Average snowfall in January: 1.65"

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

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Average snowfall days in January
Delaware City, DE

Average snowfall days in January - Delaware City, DE
  • Average snowfall days in January: 4.3 days

The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in January
Delaware City, DE

Average sea temperature in January - Delaware City, DE
  • Average sea temperature in January: 42.4°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).

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Average daylight in January /
Average sunshine in January
Delaware City, DE

Average daylight in January / Average sunshine in January - Delaware City, DE
  • Average daylight in January: 9h and 45min

The month with the longest days is June (Average daylight: 14h and 55min).
The month with the shortest days is December (Average daylight: 9h and 26min).

  • Average sunshine in January: 5h and 12min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in January
Delaware City, DE

Average sunshine days in January - Delaware City, 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 May (11.8 days).

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Average UV index in January
Delaware City, DE

Average UV index in January - Delaware City, 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, February, November and December (UV index 2).

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Average cloud cover in January
Delaware City, DE

Average cloud cover in January - Delaware City, DE
  • Average cloud cover in January: 44

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in January
Delaware City, DE

Average visibility in January - Delaware City, 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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