December weather forecast and climate
Durham, CA

Weather in December

The first month of the winter, December, is still a cool month in Durham, California, with average temperature ranging between max 53.2°F (11.8°C) and min 39°F (3.9°C).

Temperature

The coldest month is December, with an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 39°F (3.9°C).

Humidity

In December, the average relative humidity in Durham is 67%.

Rainfall

In Durham, during December, the rain falls for 11.5 days and regularly aggregates up to 3.9" (99mm) of precipitation. In Durham, during the entire year, the rain falls for 90.7 days and collects up to 21.81" (554mm) of precipitation.

Snowfall

December is the only month when snow falls. The month with the most snowfall in Durham is December when snow falls for 0.4 days and typically aggregates up to 0.12" (3mm) of snow.

Daylight

With an average of 9.4h of daylight, December has the shortest days of the year.

Sunshine

January and December, with an average of 5.9h of sunshine, are months with the least sunshine in Durham, California.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Durham. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for average 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Durham?

The coldest month is December, with an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 39°F (3.9°C).

What is the average humidity in December in Durham?

The average relative humidity in December in Durham is 67%.

How many days does it rain in December in Durham?

In Durham, California, in December, it is raining for 11.5 days, with typically 3.9" (99mm) of accumulated precipitation.

When does it snow the most in Durham?

The month with the most snowfall in Durham is December when snow falls for 0.4 days and typically aggregates up to 0.12" (3mm) of snow.

When does it start to snow in Durham?

December is the first month it typically snows in Durham. Throughout December, in the average 0.4 snowfall days, it receives 0.12" (3mm) of snow.

What is the month with the shortest days in Durham?

With an average of 9.4h of daylight, December has the shortest days of the year in Durham, California.

How many hours of daylight does Durham have in December?

In December, the average length of the day in Durham is 9.4h.

What is the month with the least sunshine in Durham?

Months with the least sunshine are January and December, with an average of 5.9h of sunshine.

How long on average sun shines in December in Durham?

The average sunshine in December in Durham, California, is 5.9h.

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

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

How high is the UV index in December in Durham?

The average daily maximum UV index in December in Durham, California, is 3. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in December
Durham, CA

Average temperature in December - Durham, CA
  • Average high temperature in December: 53.2°F

The warmest month (with the highest average high temperature) is July (95.2°F).
The month with the lowest average high temperature is December (53.2°F).

  • Average low temperature in December: 39°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is December (39°F).

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Average pressure in December
Durham, CA

Average pressure in December - Durham, CA
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in December
Durham, CA

Average wind speed in December - Durham, CA
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in December
Durham, CA

Average humidity in December - Durham, CA
  • Average humidity in December: 67%

The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (32%).

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Average rainfall in December
Durham, CA

Average rainfall in December - Durham, CA
  • Average rainfall in December: 3.9"

The wettest month (with the highest rainfall) is February (3.94").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in December
Durham, CA

Average rainfall days in December - Durham, CA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is August (1.9 days).

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Average snowfall in December
Durham, CA

Average snowfall in December - Durham, CA
  • Average snowfall in December: 0.12"

The month with the highest snowfall is December (0.12").
Months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Durham, CA

Average snowfall days in December - Durham, CA
  • Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is December (0.4 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
Durham, CA

Average daylight in December / Average sunshine in December - Durham, CA
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 5.9h

The month with the most sunshine is July (Average sunshine: 12.2h).
Months with the least sunshine are January and December (Average sunshine: 5.9).

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Average sunshine days in December
Durham, CA

Average sunshine days in December - Durham, CA
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is August (28.1 days).
The month with the least sunshine days is March (14.9 days).

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Average UV index in December
Durham, CA

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Durham, CA

Average cloud cover in December - Durham, CA
  • Average cloud cover in December: 35

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in December
Durham, CA

Average visibility in December - Durham, 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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