December weather forecast
Harbeson, DE

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Weather in December

December marks the advent of winter in Harbeson, Delaware. Temperatures drop further and daylight becomes scarce, wrapping the city in a winter blanket. The range of temperatures from 37.8°F (3.2°C) to 47.1°F (8.4°C) presets the chilly climate. The first touches of snowfall of 0.43" (11mm), along with the winter cold in this month, signal the nearing end of the year.

Temperature

As November makes way for December, Harbeson's average high-temperature eases from a cool 54.9°F (12.7°C) to a frosty 47.1°F (8.4°C). During the month of December, the nighttime temperature in Harbeson falls to an average of 37.8°F (3.2°C).

Humidity

In Harbeson, the average relative humidity in December is 76%.

Rainfall

In Harbeson, in December, it is raining for 9.2 days, with typically 0.83" (21mm) of accumulated precipitation. In Harbeson, during the entire year, the rain falls for 124.9 days and collects up to 11.34" (288mm) of precipitation.

Snowfall

January through March, May, November and December are months with snowfall. In Harbeson, during December, snow falls for 2.1 days and regularly aggregates up to 0.43" (11mm) of snow. Throughout the year, in Harbeson, there are 10.7 snowfall days, and 1.97" (50mm) of snow is accumulated.

Daylight

The month with the shortest days in Harbeson is December, with an average of 9h and 30min of daylight.
On the first day of December in Harbeson, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:49 pm EST.

Sunshine

The average sunshine in December is 5.3h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. 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 high UV index of 2 in December translates into this advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What are the temperatures in Harbeson in December?

December temperatures vary between a high-temperature of 47.1°F (8.4°C) and a low-temperature of 37.8°F (3.2°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 86°F (30°C).

What is the average humidity in December in Harbeson?

In December, the average relative humidity in Harbeson, Delaware, is 76%.

How much does it rain in Harbeson in December?

In Harbeson, during December, the rain falls for 9.2 days and regularly aggregates up to 0.83" (21mm) of precipitation.

How many days does it snow in December in Harbeson?

In Harbeson, Delaware, in December, during 2.1 snowfall days, 0.43" (11mm) of snow is typically accumulated.

What is the month with the shortest days in Harbeson?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Harbeson, Delaware.

What is the average length of the day in December in Harbeson?

The average day length in December is 9h and 31min.

What time are sunrise and sunset in December in Harbeson?

On the first day of December in Harbeson, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:49 pm EST.

How many hours of sunshine does Harbeson have in December?

In Harbeson, Delaware, the average sunshine duration in December is 5.3h.

What is the month with the lowest UV index in Harbeson?

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

How high is the UV index in December in Harbeson?

The average daily maximum UV index in December in Harbeson is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Harbeson, DE

Average temperature in December - Harbeson, DE
  • Average high temperature in December: 47.1°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in December: 37.8°F

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in December
Harbeson, DE

Average pressure in December - Harbeson, DE
  • Average pressure in December: 30.1"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 December
Harbeson, DE

Average wind speed in December - Harbeson, DE
  • Average wind speed in December: 10.2mph

The windiest months (with the highest average wind speed) are January and February (10.8mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).

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Average humidity in December
Harbeson, DE

Average humidity in December - Harbeson, DE
  • Average humidity in December: 76%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).

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Average rainfall in December
Harbeson, DE

Average rainfall in December - Harbeson, DE
  • Average rainfall in December: 0.83"

The wettest month (with the highest rainfall) is August (1.38").
The driest month (with the least rainfall) is September (0.63").

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Average rainfall days in December
Harbeson, DE

Average rainfall days in December - Harbeson, DE
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is November (6.7 days).

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Average snowfall in December
Harbeson, DE

Average snowfall in December - Harbeson, DE
  • Average snowfall in December: 0.43"

The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, June, July, August, September and October (0").

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Average snowfall days in December
Harbeson, DE

Average snowfall days in December - Harbeson, DE
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Harbeson, DE

Average daylight in December / Average sunshine in December - Harbeson, DE
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in December
Harbeson, DE

Average sunshine days in December - Harbeson, DE
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index in December
Harbeson, DE

Average UV index in December - Harbeson, DE
  • Average UV index in December: 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 December
Harbeson, DE

Average cloud cover in December - Harbeson, DE
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in December
Harbeson, DE

Average visibility in December - Harbeson, DE
  • Average visibility in December: 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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Harbeson, Delaware, USA

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