December weather forecast
Milpitas, CA

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Weather in December

The first month of the winter, December, is also a moderate month in Milpitas, California, with an average temperature fluctuating between 56.3°F (13.5°C) and 42.6°F (5.9°C).

Temperature

In Milpitas, California, the month of December registers the lowest temperatures, averaging 56.3°F (13.5°C) at the peak and 42.6°F (5.9°C) at the lowest.

Humidity

The average relative humidity in December is 71%.

Rainfall

In Milpitas, during December, the rain falls for 7.6 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Milpitas, during the entire year, the rain falls for 52.8 days and collects up to 4.06" (103mm) of precipitation.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:04 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:00 pm PST.

Sunshine

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

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Milpitas, California. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: An average UV index of 3 in December transforms into this advice:
Exercise prevention - Warding off sunburn is urged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

What is the coldest time of year in Milpitas?

The month of December, characterized by an average high of 56.3°F (13.5°C) and a low of 42.6°F (5.9°C), is recognized as the coldest in Milpitas.

What are the temperatures in Milpitas in December?

In Milpitas, 56.3°F (13.5°C) is the average high-temperature and 42.6°F (5.9°C) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 86°F (30°C).

What is the average humidity in December in Milpitas?

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

How much does it rain in Milpitas in December?

In Milpitas, in December, it is raining for 7.6 days, with typically 0.71" (18mm) of accumulated precipitation.

What is the month with the shortest days in Milpitas?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

How many hours of daylight does Milpitas have in December?

The average day length in December in Milpitas is 9h and 38min.

When is the sunrise / sunset in December in Milpitas?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:49 pm. On the last day of the month, in Milpitas, sunrise is at 7:21 am and sunset at 5:00 pm PST.

What is the month with the least sunshine in Milpitas?

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

How many hours of sunshine does Milpitas have in December?

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

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

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

What is the UV index intensity in December in Milpitas?

The average daily maximum UV index in December in Milpitas is 3. A UV Index reading of 3 to 5 represents a moderate health threat 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
Milpitas, CA

Average temperature in December - Milpitas, CA
  • Average high temperature in December: 56.3°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in December: 42.6°F

The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (42.6°F).

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Average pressure in December
Milpitas, CA

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

The month with the highest atmospheric pressure is January (30.14"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
Milpitas, CA

Average wind speed in December - Milpitas, CA
  • Average wind speed in December: 4.9mph

The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest months (with the lowest average wind speed) are October and November (4.3mph).

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Average humidity in December
Milpitas, CA

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

The month with the highest relative humidity is March (73%).
The month with the lowest relative humidity is July (58%).

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Average rainfall in December
Milpitas, CA

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

The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").

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Average rainfall days in December
Milpitas, CA

Average rainfall days in December - Milpitas, CA
  • Average rainfall days in December: 7.6 days

The month with the highest number of rainy days is March (9.9 days).
The month with the least rainy days is August (0.4 days).

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

Average daylight in December / Average sunshine in December - Milpitas, 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 36min).

  • Average sunshine in December: 6h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days in December
Milpitas, CA

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

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (19.5 days).

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Average UV index in December
Milpitas, CA

Average UV index in December - Milpitas, 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
Milpitas, CA

Average cloud cover in December - Milpitas, CA
  • Average cloud cover in December: 33

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in December
Milpitas, CA

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

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