December weather forecast
Concord, CA

Weather in December

December, the first month of the winter in Concord, is also a moderate month, with temperature in the range of an average high of 55.6°F (13.1°C) and an average low of 42.4°F (5.8°C).

Temperature

December is the coldest month, with an average high-temperature of 55.6°F (13.1°C) and an average low-temperature of 42.4°F (5.8°C).

Humidity

The average relative humidity in December is 70%.

Rainfall

In Concord, during 7.5 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Concord, during the entire year, the rain falls for 49.3 days and collects up to 3.82" (97mm) of precipitation.

Daylight

December has the shortest days of the year in Concord, with an average of 9h and 35min of daylight.
On the first day of December, sunrise is at 7:05 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:58 pm PST.

Sunshine

December has the least sunshine of the year in Concord, California, with an average of 5.7h of sunshine.

UV index

The months with the lowest UV index in Concord, California, are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 the 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 Concord?

With an average high-temperature of 55.6°F (13.1°C) and an average low-temperature of 42.4°F (5.8°C), December is the coldest month in Concord, California.

What is the temperature in December in Concord?

In Concord, California, in December, the average high-temperature is 55.6°F (13.1°C), and the average low-temperature is 42.4°F (5.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 84.2°F (29°C).

What is the average humidity in December in Concord?

In Concord, the average relative humidity in December is 70%.

How many days does it rain in December in Concord?

In Concord, California, during December, the rain falls for 7.5 days and regularly aggregates up to 0.59" (15mm) of precipitation.

What is the month with the shortest days in Concord?

December has the shortest days of the year, with an average of 9h and 35min of daylight.

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

The average day length in December is 9h and 35min.

When is the sunrise / sunset in December in Concord?

On the first day of December, sunrise is at 7:05 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:58 pm PST.

What is the month with the least sunshine in Concord?

The month with the least sunshine in Concord is December, with an average of 5.7h of sunshine.

How many hours of sunshine does Concord have in December?

In December, the average sunshine duration in Concord is 5.7h.

What is the month with the lowest UV index in Concord?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Concord.

What is the UV index intensity in December in Concord?

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Concord, CA

Average temperature in December - Concord, CA
  • Average high temperature in December: 55.6°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in December: 42.4°F

The month with the highest average low temperature is September (57.4°F).
The coldest month (with the lowest average low temperature) is January (42.3°F).

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Average pressure in December
Concord, CA

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

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

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Average wind speed in December
Concord, CA

Average wind speed in December - Concord, CA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is May (7.6mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

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Average humidity in December
Concord, CA

Average humidity in December - Concord, CA
  • Average humidity in December: 70%

The months with the highest relative humidity are January and March (73%).
The month with the lowest relative humidity is September (56%).

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Average rainfall in December
Concord, CA

Average rainfall in December - Concord, CA
  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days in December
Concord, CA

Average rainfall days in December - Concord, CA
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is August (0.5 days).

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

Average daylight in December / Average sunshine in December - Concord, CA
  • Average daylight in December: 9h and 35min

The month with the longest days is June (Average daylight: 14h and 46min).
The month with the shortest days is December (Average daylight: 9h and 35min).

  • Average sunshine in December: 5h and 42min

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 42min).

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Average sunshine days in December
Concord, CA

Average sunshine days in December - Concord, CA
  • Average sunshine days in December: 22.2 days

The month with the most sunshine days is July (29.5 days).
The month with the least sunshine days is March (20 days).

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Average UV index in December
Concord, CA

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

The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Concord, CA

Average cloud cover in December - Concord, CA
  • Average cloud cover in December: 36

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in December
Concord, CA

Average visibility in December - Concord, 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).

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