Corona
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Corona, CA

Colorful beach homes along the Pacific Ocean facing the calm turquoise-blue ocean water in Corona del Mar, California
Colorful beach homes along the Pacific Ocean facing the calm turquoise-blue ocean water in Corona del Mar, California
The first month of the winter, December, is still a comfortable month in Corona, California, with average temperature varying between 63.5°F (17.5°C) and 46.9°F (8.3°C).

Temperature

December is the coldest month, with an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 46.9°F (8.3°C).

Humidity

In Corona, California, the average relative humidity is 53%.

Rainfall

December is the month with the most rainfall. Rain falls for 6.5 days and accumulates 1.89" (48mm) of precipitation.

Daylight

December has the shortest days of the year in Corona, with an average of 9.9h of daylight.

Sunshine

The month with the least sunshine in Corona, California, is December, with an average of 6.7h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Corona. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in December transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 coldest month in Corona?

With an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 46.9°F (8.3°C), December is the coldest month.

What is the temperature in December in Corona?

In December, in Corona, the average high-temperature is 63.5°F (17.5°C), and the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in December in Corona?

In December, the average relative humidity is 53%.

How much does it rain in Corona in December?

In December, in Corona, the rain falls for 6.5 days. Throughout December, 1.89" (48mm) of precipitation is accumulated.

What is the wettest month in Corona?

The month with the most rainfall in Corona, California, is December when the rain falls for 6.5 days and typically aggregates up to 1.89" (48mm) of precipitation.

What is the month with the shortest days in Corona?

The month with the shortest days in Corona is December, with an average of 9.9h of daylight.

What is the average length of the day in December in Corona?

The average length of the day in December in Corona is 9.9h.

What is the month with the least sunshine in Corona?

With an average of 6.7h of sunshine, December has the least sunshine of the year in Corona.

How long on average sun shines in December in Corona?

In December, the average sunshine in Corona is 6.7h.

When is the lowest UV index in Corona?

Months with the lowest UV index in Corona are January, February, November and December, with an average maximum UV index of 4.

How high is the UV index in December in Corona?

In December, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.
Average temperature in December - Corona, CA
  • Average high temperature in December: 63.5°F

The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (63.5°F).

  • Average low temperature in December: 46.9°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).

Average humidity in December - Corona, CA
  • Average humidity in December: 53%

The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is November (48%).

Average rainfall in December - Corona, CA
  • Average rainfall in December: 1.89"

The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the lowest rainfall) is June (0.04").

Average rainfall days in December - Corona, 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 lowest number of rainy days is June (1.3 days).

Average daylight in December / Average sunshine in December - Corona, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.7h

Months with most sunshine are July and August (Average sunshine: 12.1h).
The month with least sunshine is December (Average sunshine: 6.7h).

Average UV index in December - Corona, CA
  • Average UV index in December: 4

Months with the highest UV index are July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 4).