December weather forecast and climate
Descanso, CA

Weather in December

December, the first month of the winter, in Descanso, is still a comfortable month, with average temperature varying between 44.6°F (7°C) and 61.3°F (16.3°C).

Temperature

December is the coldest month, with an average high-temperature of 61.3°F (16.3°C) and an average low-temperature of 44.6°F (7°C).

Humidity

The average relative humidity in Descanso is 57%.

Rainfall

In Descanso, during December, the rain falls for 5.5 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Descanso, during the entire year, the rain falls for 62 days and collects up to 6.38" (162mm) of precipitation.

Daylight

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

Sunshine

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

UV index

November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
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. 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 Descanso?

December is the coldest month in Descanso, California, with an average high-temperature of 61.3°F (16.3°C) and an average low-temperature of 44.6°F (7°C).

What is the temperature in December in Descanso?

The average high-temperature, in December, in Descanso, is 61.3°F (16.3°C), while the average low-temperature is 44.6°F (7°C).

What is the average humidity in December in Descanso?

In December, the average relative humidity in Descanso, California, is 57%.

How much does it rain in Descanso in December?

In Descanso, in December, it is raining for 5.5 days, with typically 0.71" (18mm) of accumulated precipitation.

What is the month with the shortest days in Descanso?

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

How many hours of daylight does Descanso have in December?

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

What is the month with the least sunshine in Descanso?

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

How many hours of sunshine does Descanso have in December?

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

When is the lowest UV index in Descanso?

Months with the lowest UV index are November and December, with an average maximum UV index of 3.

What is the UV index intensity in December in Descanso?

In December, the average daily maximum UV index in Descanso, California, is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in December
Descanso, CA

Average temperature in December - Descanso, CA
  • Average high temperature in December: 61.3°F

The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is December (61.3°F).

  • Average low temperature in December: 44.6°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (44.2°F).

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Average pressure in December
Descanso, CA

Average pressure in December - Descanso, 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 (29.85").

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Average wind speed in December
Descanso, CA

Average wind speed in December - Descanso, CA
  • Average wind speed in December: 5.1mph

The windiest month (with the highest average wind speed) is May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).

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Average humidity in December
Descanso, CA

Average humidity in December - Descanso, CA
  • Average humidity in December: 57%

The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is November (51%).

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Average rainfall in December
Descanso, CA

Average rainfall in December - Descanso, CA
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Descanso, CA

Average rainfall days in December - Descanso, CA
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (1.5 days).

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

Average daylight in December / Average sunshine in December - Descanso, CA
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.7h

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

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Average sunshine days in December
Descanso, CA

Average sunshine days in December - Descanso, CA
  • Average sunshine days in December: 24 days

The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (19.4 days).

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Average UV index in December
Descanso, CA

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

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in December
Descanso, CA

Average cloud cover in December - Descanso, CA
  • Average cloud cover in December: 23

Months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in December
Descanso, CA

Average visibility in December - Descanso, 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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