December weather forecast and climate
South Park, CA

Weather in December

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

Temperature

The coldest month is December, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 43.5°F (6.4°C).

Humidity

The average relative humidity in South Park, California, 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

December has the shortest days of the year, with an average of 10h of daylight.

Sunshine

With an average of 6.5h of sunshine, December has the least sunshine of the year in South Park.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the coldest month in South Park?

The coldest month in South Park, California, is December, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 43.5°F (6.4°C).

What is the temperature in December in South Park?

In South Park, California, in December, the average high-temperature is 61.7°F (16.5°C), and the average low-temperature is 43.5°F (6.4°C).

What is the average humidity in December in South Park?

The average relative humidity in December is 58%.

How much does it rain in South Park in December?

In December, in South Park, the rain falls for 6.5 days. Throughout December, 1.81" (46mm) of precipitation is accumulated.

What is the wettest month in South Park?

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.

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

The month with the shortest days in South Park, California, is December, with an average of 10h of daylight.

What is the average length of the day in December in South Park?

In December, the average length of the day is 10h.

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

December has the least sunshine of the year in South Park, California, with an average of 6.5h of sunshine.

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

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

When is the lowest UV index in South Park?

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

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

In South Park, California, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

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"

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

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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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.5h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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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

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

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

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