December weather forecast
Robertsdale, PA

Weather in December

The first month of the winter, December, is still a cold month in Robertsdale, Pennsylvania, with an average temperature varying between 27.3°F (-2.6°C) and 38.5°F (3.6°C).

Temperature

In December, the average high-temperature decreases from a chilly 48°F (8.9°C) in November to a cold 38.5°F (3.6°C). In December, in Robertsdale, the average low-temperature is 27.3°F (-2.6°C).

Humidity

The average relative humidity in December is 81%.

Rainfall

In December, in Robertsdale, the rain falls for 10.2 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 146.6 rainfall days, and 19.84" (504mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Robertsdale, during 6.7 snowfall days, 2.2" (56mm) of snow is typically accumulated. In Robertsdale, during the entire year, snow falls for 37.4 days and aggregates up to 14.61" (371mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 22min of daylight.
On the first day of December, sunrise is at 7:15 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:56 pm EST.

Sunshine

In December, the average sunshine is 4.4h.

UV index

The months with the lowest UV index are January through March, November 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 ordinary person.
Note: The daily maximum UV index of 2 in December 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 solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 temperature in December in Robertsdale?

In December, the average high-temperature is 38.5°F (3.6°C), and the average low-temperature is 27.3°F (-2.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in July is computed to be 89.6°F (32°C).

What is the average humidity in December in Robertsdale?

In December, the average relative humidity in Robertsdale, Pennsylvania, is 81%.

How much does it rain in Robertsdale in December?

In December, in Robertsdale, Pennsylvania, the rain falls for 10.2 days. Throughout December, 1.57" (40mm) of precipitation is accumulated.

How much does it snow in Robertsdale in December?

In December, in Robertsdale, it is snowing for 6.7 days. Throughout December, 2.2" (56mm) of snow is accumulated.

What is the month with the shortest days in Robertsdale?

With an average of 9h and 22min of daylight, December has the shortest days of the year in Robertsdale.

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

In December, the average day length in Robertsdale is 9h and 22min.

What time are sunrise and sunset in December in Robertsdale?

In December, on the first day of the month, sunrise is at 7:15 am and sunset at 4:47 pm. On the last day of the month, in Robertsdale, sunrise is at 7:34 am and sunset at 4:56 pm EST.

How many hours of sunshine does Robertsdale have in December?

In December, the average sunshine duration is 4.4h.

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

January through March, November 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 Robertsdale?

In December, the average daily maximum UV index in Robertsdale, Pennsylvania, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Robertsdale, PA

Average temperature in December - Robertsdale, PA
  • Average high temperature in December: 38.5°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 (32.5°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

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Average pressure in December
Robertsdale, PA

Average pressure in December - Robertsdale, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Robertsdale, PA

Average wind speed in December - Robertsdale, PA
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in December
Robertsdale, PA

Average humidity in December - Robertsdale, PA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in December
Robertsdale, PA

Average rainfall in December - Robertsdale, PA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is November (1.18").

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Average rainfall days in December
Robertsdale, PA

Average rainfall days in December - Robertsdale, PA
  • Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.5 days).

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Average snowfall in December
Robertsdale, PA

Average snowfall in December - Robertsdale, PA
  • Average snowfall in December: 2.2"

The month with the highest snowfall is February (3.74").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Robertsdale, PA

Average snowfall days in December - Robertsdale, PA
  • Average snowfall days in December: 6.7 days

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Robertsdale, PA

Average daylight in December / Average sunshine in December - Robertsdale, PA
  • Average daylight in December: 9h and 22min

The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in December: 4h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in December
Robertsdale, PA

Average sunshine days in December - Robertsdale, PA
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).

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Average UV index in December
Robertsdale, PA

Average UV index in December - Robertsdale, PA
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
Robertsdale, PA

Average cloud cover in December - Robertsdale, PA
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
Robertsdale, PA

Average visibility in December - Robertsdale, PA
  • Average visibility in December: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

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