Crescent City
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Crescent City, CA

The magnificent red and white stone Battery Point Lighthouse in Crescent City, California
The magnificent red and white stone Battery Point Lighthouse in Crescent City, California
The first month of the winter, December, is also a fresh month in Crescent City, California, with average temperature fluctuating between 38.8°F (3.8°C) and 54°F (12.2°C).

Temperature

In Crescent City, the average high-temperature is practically the same as in November - a cool 54°F (12.2°C). The average low-temperature, in December, is 38.8°F (3.8°C).

Rainfall

The month with the most rainfall is December when the rain falls for 11.9 days and typically aggregates up to 11.9" (302mm) of precipitation.

Ocean temperature

In Crescent City, the average water temperature is 52°F (11.1°C).
Note: Swimming in 52°F (11.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

December has the shortest days of the year in Crescent City, with an average of 9.2h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 3h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 1 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in December in Crescent City?

The average high-temperature, in December, is 54°F (12.2°C), while the average low-temperature is 38.8°F (3.8°C).

How many days does it rain in December in Crescent City?

In Crescent City, during December, the rain falls for 11.9 days and regularly aggregates up to 11.9" (302mm) of precipitation.

What is the rainiest month in Crescent City?

The month with the most rainfall is December when the rain falls for 11.9 days and typically aggregates up to 11.9" (302mm) of precipitation.

What is the water temperature in December in Crescent City?

In Crescent City, in December, the average water temperature is 52°F (11.1°C). Swimming in 52°F (11.1°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Crescent City?

With an average of 9.2h of daylight, December has the shortest days of the year in Crescent City, California.

How many hours of daylight does Crescent City have in December?

In Crescent City, the average length of the day in December is 9.2h.

What is the month with the least sunshine in Crescent City?

December has the least sunshine of the year in Crescent City, with an average of 3h of sunshine.

How long on average sun shines in December in Crescent City?

The average sunshine in December is 3h.

When is the lowest UV index in Crescent City?

December is the month with the lowest UV index, with an average maximum UV index of 1.

How high is the UV index in December in Crescent City?

In December, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Crescent City, CA
  • Average high temperature in December: 54°F

Warmest months (with the highest average high temperature) are August and September (66°F).
The month with the lowest average high temperature is January (53.6°F).

  • Average low temperature in December: 38.9°F

The month with the highest average low temperature is August (50.8°F).
The coldest month (with the lowest average low temperature) is December (38.9°F).

Average rainfall in December - Crescent City, CA
  • Average rainfall in December: 11.9"

The wettest month (with the highest rainfall) is December (11.9").
The driest month (with the lowest rainfall) is July (0.4").

Average rainfall days in December - Crescent City, CA
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is March (13.4 days).
The month with the lowest number of rainy days is July (1.6 days).

Average sea temperature in December - Crescent City, CA
  • Average sea temperature in December: 52°F

The best month for swimming (with the highest average sea temperature) is October (52.6°F).
The coldest month (with the lowest average sea temperature) is April (50.7°F).

Average daylight in December / Average sunshine in December - Crescent City, CA
  • Average daylight in December: 9.2h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in December: 3h

Months with most sunshine are June and July (Average sunshine: 10h).
The month with least sunshine is December (Average sunshine: 3h).

Average UV index in December - Crescent City, CA
  • Average UV index in December: 1

Months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 1).