December weather forecast
Aromas, CA

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Weather in December

The first month of the winter, December, is also a moderate month in Aromas, California, with an average temperature ranging between max 57.6°F (14.2°C) and min 40.6°F (4.8°C).

Temperature

December tends to be the coldest month, with temperatures averaging a daily high of 57.6°F (14.2°C) and a low of 40.6°F (4.8°C).

Humidity

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

Rainfall

The month with the most rainfall in Aromas, California, is December, when the rain falls for 7.4 days and typically aggregates up to 1.02" (26mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 7:01 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:19 am and sunset at 5:00 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 3 in December translates into the following instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What are the coldest months in Aromas?

Aromas, California, experiences its lowest temperatures in December, with an average peak of 57.6°F (14.2°C) and a low of 40.6°F (4.8°C).

What is the usual temperature for Aromas in December?

Aromas in December has an average high-temperature of 57.6°F (14.2°C) and an average low-temperature of 40.6°F (4.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 86°F (30°C).

What is the average humidity in December in Aromas?

The average relative humidity in December in Aromas, California, is 71%.

What is the wettest month in Aromas?

The month with the most rainfall in Aromas, California, is December, when the rain falls for 7.4 days and typically aggregates up to 1.02" (26mm) of precipitation.

How much does it rain in Aromas in December?

In Aromas, during December, the rain falls for 7.4 days and regularly aggregates up to 1.02" (26mm) of precipitation.

What is the month with the shortest days in Aromas?

With an average of 9h and 42min of daylight, December has the shortest days of the year.

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

In Aromas, the average day length in December is 9h and 41min.

When is the sunrise / sunset in December in Aromas?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:50 pm. On the last day of the month, in Aromas, California, sunrise is at 7:19 am and sunset at 5:00 pm PST.

What is the month with the least sunshine in Aromas?

December has the least sunshine of the year, with an average of 6h of sunshine.

How many hours of sunshine does Aromas have in December?

In December, the average sunshine duration in Aromas is 6h.

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

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

What is the UV index reading in December in Aromas?

In Aromas, California, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Aromas, CA

Average temperature in December - Aromas, CA
  • Average high temperature in December: 57.6°F

The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is December (57.6°F).

  • Average low temperature in December: 40.6°F

The month with the highest average low temperature is August (54.3°F).
The coldest months (with the lowest average low temperature) are February, March and December (40.6°F).

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Average pressure in December
Aromas, CA

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed in December
Aromas, CA

Average wind speed in December - Aromas, CA
  • Average wind speed in December: 4mph

The windiest month (with the highest average wind speed) is May (5.3mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).

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Average humidity in December
Aromas, CA

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

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (58%).

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Average rainfall in December
Aromas, CA

Average rainfall in December - Aromas, CA
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is December (1.02").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days in December
Aromas, CA

Average rainfall days in December - Aromas, CA
  • Average rainfall days in December: 7.4 days

The month with the highest number of rainy days is March (9 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
Aromas, CA

Average daylight in December / Average sunshine in December - Aromas, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h

The months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6h).

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Average sunshine days in December
Aromas, CA

Average sunshine days in December - Aromas, CA
  • Average sunshine days in December: 22.3 days

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (20.6 days).

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Average UV index in December
Aromas, CA

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

The months with the highest UV index are June, July 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
Aromas, CA

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

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in December
Aromas, CA

Average visibility in December - Aromas, 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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Aromas, California, USA

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