December weather forecast
Clearlake Park, CA

Share

Weather in December

The first month of the winter, December, is still a cool month in Clearlake Park, California, with an average temperature ranging between min 38.1°F (3.4°C) and max 52.7°F (11.5°C).

Temperature

In Clearlake Park, the lowest temperatures are generally noted in December, averaging a high of 52.7°F (11.5°C) and a low of 38.1°F (3.4°C).

Humidity

In December, the average relative humidity is 72%.

Rainfall

In December, the rain falls for 11.2 days. Throughout December, 3.11" (79mm) of precipitation is accumulated. In Clearlake Park, during the entire year, the rain falls for 79.8 days and collects up to 17.44" (443mm) of precipitation.

Snowfall

Months with snowfall in Clearlake Park are January through March, November and December. In Clearlake Park, during December, snow falls for 0.2 days and regularly aggregates up to 0.08" (2mm) of snow. In Clearlake Park, during the entire year, snow falls for 1.8 days and aggregates up to 0.98" (25mm) of snow.

Daylight

December has the shortest days of the year in Clearlake Park, with an average of 9h and 30min of daylight.
On the first day of December in Clearlake Park, sunrise is at 7:11 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:58 pm PST.

Sunshine

With an average of 5.3h of sunshine, December has the least sunshine of the year.

UV index

November 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 low threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
[Resources]

Frequently asked questions

What is the coldest time of year in Clearlake Park?

Clearlake Park's December weather reaches an average high of 52.7°F (11.5°C) and an average low of 38.1°F (3.4°C), making it the coldest month.

What is the usual temperature for Clearlake Park in December?

The high-temperature, in December, in Clearlake Park, records 52.7°F (11.5°C), while the low-temperature is 38.1°F (3.4°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is calculated to be 86°F (30°C).

What is the average humidity in December in Clearlake Park?

In Clearlake Park, California, the average relative humidity in December is 72%.

How much does it rain in Clearlake Park in December?

In Clearlake Park, in December, during 11.2 rainfall days, 3.11" (79mm) of precipitation is typically accumulated.

How many days does it snow in December in Clearlake Park?

In December, in Clearlake Park, California, it is snowing for 0.2 days. Throughout December, 0.08" (2mm) of snow is accumulated.

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

The month with the shortest days is December, with an average of 9h and 30min of daylight.

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

In December, the average day length in Clearlake Park is 9h and 29min.

When are sunrise and sunset in December in Clearlake Park?

On the first day of December in Clearlake Park, sunrise is at 7:11 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:58 pm PST.

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

The month with the least sunshine is December, with an average of 5.3h of sunshine.

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

In Clearlake Park, California, the average sunshine duration in December is 5.3h.

What are the months with the lowest UV index in Clearlake Park?

November and December, with an average maximum UV index of 2, are months with the lowest UV index in Clearlake Park, California.

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

In December, the average daily maximum UV index in Clearlake Park, California, is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Clearlake Park, CA

Average temperature in December - Clearlake Park, CA
  • Average high temperature in December: 52.7°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in December: 38.1°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).

[Resources]

Average pressure in December
Clearlake Park, CA

Average pressure in December - Clearlake Park, CA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

[Resources]

Average wind speed in December
Clearlake Park, CA

Average wind speed in December - Clearlake Park, CA
  • Average wind speed in December: 4.7mph

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).

[Resources]

Average humidity in December
Clearlake Park, CA

Average humidity in December - Clearlake Park, CA
  • Average humidity in December: 72%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (44%).

[Resources]

Average rainfall in December
Clearlake Park, CA

Average rainfall in December - Clearlake Park, CA
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is February (3.7").
The driest months (with the least rainfall) are July and August (0.04").

[Resources]

Average rainfall days in December
Clearlake Park, CA

Average rainfall days in December - Clearlake Park, CA
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is March (13.9 days).
The months with the least rainy days are July and August (1.1 days).

[Resources]

Average snowfall in December
Clearlake Park, CA

Average snowfall in December - Clearlake Park, CA
  • Average snowfall in December: 0.08"

The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Clearlake Park, CA

Average snowfall days in December - Clearlake Park, CA
  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Clearlake Park, CA
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
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: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

[Resources]

Average sunshine days in December
Clearlake Park, CA

Average sunshine days in December - Clearlake Park, CA
  • Average sunshine days in December: 19 days

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.8 days).

[Resources]

Average UV index in December
Clearlake Park, CA

Average UV index in December - Clearlake Park, CA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).

[Resources]

Average cloud cover in December
Clearlake Park, CA

Average cloud cover in December - Clearlake Park, CA
  • Average cloud cover in December: 41

The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 4).

[Resources]

Average visibility in December
Clearlake Park, CA

Average visibility in December - Clearlake 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).

[Resources]

Clearlake Park, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location