December weather forecast
Genesee, PA

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Weather in December

The first month of the winter, December, is also an icy month in Genesee, Pennsylvania, with an average temperature varying between 33.1°F (0.6°C) and 23.7°F (-4.6°C).

Temperature

December's onset corresponds with a shift in the average high-temperature, moving from a frosty 43.2°F (6.2°C) in November to a wintry 33.1°F (0.6°C). In Genesee, the average low-temperature during the month of December is a subzero cold 23.7°F (-4.6°C).

Humidity

In December, the average relative humidity is 87%.

Rainfall

In December, the rain falls for 9.1 days. Throughout December, 2.36" (60mm) of precipitation is accumulated. In Genesee, during the entire year, the rain falls for 155.8 days and collects up to 26.97" (685mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 17.8 days. Throughout December, 8.27" (210mm) of snow is accumulated. Throughout the year, there are 91.9 snowfall days, and 44.76" (1137mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:50 pm EST.

Sunshine

January and December, with an average of 2.6h of sunshine, are months with the least sunshine.

UV index

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 1 in December transforms into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.

Frequently asked questions

How cold is December?

The average high-temperature and low-temperature during December are 33.1°F (0.6°C) and 23.7°F (-4.6°C) respectively.

What is the average humidity in December?

In December, the average relative humidity is 87%.

How much does it rain in December?

In Genesee, during December, the rain falls for 9.1 days and regularly aggregates up to 2.36" (60mm) of precipitation.

How many days does it snow in December?

In Genesee, in December, snow falls for 17.8 days, with typically accumulated 8.27" (210mm) of snow.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 11min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:20 am and sunset at 4:40 pm. On the last day of the month, in Genesee, sunrise is at 7:39 am and sunset at 4:50 pm EST.

What is the month with the least sunshine?

January and December, with an average of 2.6h of sunshine, are months with the least sunshine.

How long on average sun shines in December?

The average sunshine duration in December is 2.6h.

When is the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1.

How high is the UV index in December in Genesee?

In Genesee, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's 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
Genesee, PA

Average temperature in December - Genesee, PA
  • Average high temperature in December: 33.1°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (27.1°F).

  • Average low temperature in December: 23.7°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

Average pressure in December
Genesee, PA

Average pressure in December - Genesee, PA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Genesee, PA

Average wind speed in December - Genesee, PA
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in December
Genesee, PA

Average humidity in December - Genesee, PA
  • Average humidity in December: 87%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (78%).

Average rainfall in December
Genesee, PA

Average rainfall in December - Genesee, PA
  • Average rainfall in December: 2.36"

The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in December
Genesee, PA

Average rainfall days in December - Genesee, PA
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (6 days).

Average snowfall in December
Genesee, PA

Average snowfall in December - Genesee, PA
  • Average snowfall in December: 8.27"

The month with the highest snowfall is February (10.71").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Genesee, PA

Average snowfall days in December - Genesee, PA
  • Average snowfall days in December: 17.8 days

The month with the highest number of snowfall days is January (19.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Genesee, PA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 2h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and December (Average sunshine: 2h and 36min).

Average sunshine days in December
Genesee, PA

Average sunshine days in December - Genesee, PA
  • Average sunshine days in December: 8.5 days

The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (7.1 days).

Average UV index in December
Genesee, PA

Average UV index in December - Genesee, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in December
Genesee, PA

Average cloud cover in December - Genesee, PA
  • Average cloud cover in December: 76

The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is July (Cloud cover 41).

Average visibility in December
Genesee, PA

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

The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).

Genesee, Pennsylvania, USA

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