December weather forecast and climate
Bayside, CA

Weather in December

December, the first month of the winter, in Bayside, is still a cool month, with average temperature ranging between min 42.1°F (5.6°C) and max 52.7°F (11.5°C).

Temperature

With an average high-temperature of 52.7°F (11.5°C) and an average low-temperature of 42.1°F (5.6°C), December is the coldest month.

Humidity

In Bayside, the average relative humidity is 79%.

Rainfall

The month with the most rainfall in Bayside is December when the rain falls for 15.2 days and typically aggregates up to 5.31" (135mm) of precipitation.

Snowfall

In Bayside snow does not fall in January, March through December.

Daylight

December has the shortest days of the year in Bayside, California, with an average of 9.3h of daylight.

Sunshine

December has the least sunshine of the year in Bayside, California, with an average of 5.2h of sunshine.

UV index

Months with the lowest UV index in Bayside, California, are January through March, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Bayside?

With an average high-temperature of 52.7°F (11.5°C) and an average low-temperature of 42.1°F (5.6°C), December is the coldest month in Bayside.

What is the temperature in December in Bayside?

In December, in Bayside, California, the average high-temperature is 52.7°F (11.5°C), and the average low-temperature is 42.1°F (5.6°C).

What is the average humidity in December in Bayside?

The average relative humidity in December in Bayside is 79%.

How much does it rain in Bayside in December?

In Bayside, California, during December, the rain falls for 15.2 days and regularly aggregates up to 5.31" (135mm) of precipitation.

What is the wettest month in Bayside?

December is the month with the most rainfall. Rain falls for 15.2 days and accumulates 5.31" (135mm) of precipitation.

When it does not snow in Bayside?

In Bayside, California, snow does not fall in January, March through December.

What is the month with the shortest days in Bayside?

December has the shortest days of the year in Bayside, with an average of 9.3h of daylight.

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

In Bayside, California, the average length of the day in December is 9.3h.

What is the month with the least sunshine in Bayside?

With an average of 5.2h of sunshine, December has the least sunshine of the year in Bayside.

How many hours of sunshine does Bayside have in December?

The average sunshine in December is 5.2h.

What are the months with the lowest UV index in Bayside?

January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Bayside, California.

What is the UV index reading in December in Bayside?

In December, the average daily maximum UV index in Bayside, California, is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in December
Bayside, CA

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

The warmest month (with the highest average high temperature) is August (69.6°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in December: 42.1°F

The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is February (41.9°F).

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Average pressure in December
Bayside, CA

Average pressure in December - Bayside, CA
  • Average pressure in December: 30.11"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is August (29.96").

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Average wind speed in December
Bayside, CA

Average wind speed in December - Bayside, CA
  • Average wind speed in December: 7.9mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in December
Bayside, CA

Average humidity in December - Bayside, CA
  • Average humidity in December: 79%

The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in December
Bayside, CA

Average rainfall in December - Bayside, CA
  • Average rainfall in December: 5.31"

The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in December
Bayside, CA

Average rainfall days in December - Bayside, CA
  • Average rainfall days in December: 15.2 days

The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (2.1 days).

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Average snowfall in December
Bayside, CA

Average snowfall in December - Bayside, CA
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.39").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in December
Bayside, CA

Average snowfall days in December - Bayside, CA
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (0.3 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in December /
Average sunshine in December
Bayside, CA

Average daylight in December / Average sunshine in December - Bayside, CA
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 5.2h

The month with the most sunshine is July (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 5.2h).

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Average sunshine days in December
Bayside, CA

Average sunshine days in December - Bayside, CA
  • Average sunshine days in December: 14.7 days

The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (12.1 days).

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Average UV index in December
Bayside, CA

Average UV index in December - Bayside, CA
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

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Average cloud cover in December
Bayside, CA

Average cloud cover in December - Bayside, CA
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in December
Bayside, CA

Average visibility in December - Bayside, CA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).

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