December weather forecast
South Park, CA

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Weather in December

December, the first month of the winter in South Park, is still a refreshing month, with an average temperature fluctuating between 43.5°F (6.4°C) and 61.7°F (16.5°C).

Temperature

December tends to be the coldest month, with temperatures averaging a daily high of 61.7°F (16.5°C) and a low of 43.5°F (6.4°C).

Humidity

In South Park, the average relative humidity in December is 58%.

Rainfall

The month with the most rainfall is December, when the rain falls for 6.5 days and typically aggregates up to 1.81" (46mm) of precipitation.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in South Park.
On the first day of the month, sunrise is at 6:34 am and sunset at 4:39 pm. On the last day of December, in South Park, California, sunrise is at 6:52 am and sunset at 4:50 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6.5h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 3 in December translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What are the coldest months in South Park?

December, with its average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 43.5°F (6.4°C), holds the record as the coldest month.

What is the temperature in December in South Park?

In December, the average high-temperature and low-temperature in South Park are 61.7°F (16.5°C) and 43.5°F (6.4°C) respectively. In September, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in December in South Park?

In December, the average relative humidity is 58%.

What is the rainiest month in South Park?

December is the month with the most rainfall in South Park, California. Rain falls for 6.5 days and accumulates 1.81" (46mm) of precipitation.

How much does it rain in South Park in December?

In South Park, California, in December, it is raining for 6.5 days, with typically 1.81" (46mm) of accumulated precipitation.

What is the month with the shortest days in South Park?

With an average of 10h and 0min of daylight, December has the shortest days of the year in South Park, California.

How many hours of daylight does South Park have in December?

In South Park, California, the average day length in December is 9h and 58min.

When is the sunrise / sunset in December in South Park?

In December, on the first day of the month, sunrise is at 6:34 am and sunset at 4:39 pm. On the last day of the month, in South Park, California, sunrise is at 6:52 am and sunset at 4:50 pm PST.

What is the month with the least sunshine in South Park?

The month with the least sunshine in South Park is December, with an average of 6.5h of sunshine.

How long on average sun shines in December in South Park?

In South Park, California, the average sunshine duration in December is 6.5h.

What is the month with the lowest UV index in South Park?

December is the month with the lowest UV index in South Park, California, with an average maximum UV index of 3.

What is the UV index intensity in December in South Park?

In December, the average daily maximum UV index in South Park, California, is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
South Park, CA

Average temperature in December - South Park, CA
  • Average high temperature in December: 61.7°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in December: 43.5°F

The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).

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Average pressure in December
South Park, CA

Average pressure in December - South Park, CA
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in December
South Park, CA

Average wind speed in December - South Park, CA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

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Average humidity in December
South Park, CA

Average humidity in December - South Park, CA
  • Average humidity in December: 58%

The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in December
South Park, CA

Average rainfall in December - South Park, CA
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
South Park, CA

Average rainfall days in December - South Park, CA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.4 days).

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Average daylight in December /
Average sunshine in December
South Park, CA

Average daylight in December / Average sunshine in December - South Park, CA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in December
South Park, CA

Average sunshine days in December - South Park, CA
  • Average sunshine days in December: 23.4 days

The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.8 days).

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Average UV index in December
South Park, CA

Average UV index in December - South Park, CA
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
South Park, CA

Average cloud cover in December - South Park, CA
  • Average cloud cover in December: 26

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in December
South Park, CA

Average visibility in December - South Park, CA
  • 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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South Park, California, USA

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