December weather forecast and climate
Acampo, CA

Weather in December

The first month of the winter, December, is still a cool month in Acampo, California, with average temperature varying between 40.8°F (4.9°C) and 55.2°F (12.9°C).

Temperature

December is the coldest month, with an average high-temperature of 55.2°F (12.9°C) and an average low-temperature of 40.8°F (4.9°C).

Humidity

In December, the average relative humidity is 71%.

Rainfall

In Acampo, during December, the rain falls for 8.9 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Acampo, during the entire year, the rain falls for 65.8 days and collects up to 12.8" (325mm) of precipitation.

Snowfall

The only month with snowfall in Acampo, California, is December. December has the most snowfall days of the year in Acampo. Snow falls for 0.1 days.

Daylight

The month with the shortest days is December, with an average of 9.6h of daylight.

Sunshine

With an average of 5.9h of sunshine, December has the least sunshine of the year.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Acampo. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays 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 solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Acampo?

The coldest month is December, with an average high-temperature of 55.2°F (12.9°C) and an average low-temperature of 40.8°F (4.9°C).

What is the temperature in December in Acampo?

The average high-temperature, in December, in Acampo, is 55.2°F (12.9°C), while the average low-temperature is 40.8°F (4.9°C).

What is the average humidity in December in Acampo?

In Acampo, California, the average relative humidity in December is 71%.

How much does it rain in Acampo in December?

In Acampo, California, in December, during 8.9 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

When does it start to snow in Acampo?

December is the first month it typically snows in Acampo, California. Throughout December, there are 0.1 snowfall days.

What is the snowiest month in Acampo?

The month with the most snowfall days is December when snow falls for 0.1 days.

What is the month with the shortest days in Acampo?

With an average of 9.6h of daylight, December has the shortest days of the year.

How many hours of daylight does Acampo have in December?

In December, the average length of the day is 9.6h.

What is the month with the least sunshine in Acampo?

December has the least sunshine of the year, with an average of 5.9h of sunshine.

How long on average sun shines in December in Acampo?

The average sunshine in December in Acampo is 5.9h.

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

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

What is the UV index reading in December in Acampo?

The average daily maximum UV index in December in Acampo, California, is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in December
Acampo, CA

Average temperature in December - Acampo, CA
  • Average high temperature in December: 55.2°F

The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is December (55.2°F).

  • Average low temperature in December: 40.8°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is December (40.8°F).

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Average pressure in December
Acampo, CA

Average pressure in December - Acampo, CA
  • Average pressure in December: 30.12"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in December
Acampo, CA

Average wind speed in December - Acampo, CA
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).

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Average humidity in December
Acampo, CA

Average humidity in December - Acampo, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (44%).

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Average rainfall in December
Acampo, CA

Average rainfall in December - Acampo, CA
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Acampo, CA

Average rainfall days in December - Acampo, CA
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is July (0.9 days).

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Average snowfall days in December
Acampo, CA

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

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in December / Average sunshine in December - Acampo, CA
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 5.9h

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

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Average sunshine days in December
Acampo, CA

Average sunshine days in December - Acampo, CA
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is March (17.3 days).

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Average UV index in December
Acampo, CA

Average UV index in December - Acampo, 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
Acampo, CA

Average cloud cover in December - Acampo, CA
  • Average cloud cover in December: 34

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in December
Acampo, CA

Average visibility in December - Acampo, 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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