December weather forecast and climate
Milpitas, CA

Weather in December

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

Temperature

December is the coldest month, with an average high-temperature of 56.3°F (13.5°C) and an average low-temperature of 42.6°F (5.9°C).

Humidity

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

Rainfall

In Milpitas, it is raining for 7.6 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, there are 52.8 rainfall days, and 4.06" (103mm) of precipitation is accumulated.

Daylight

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

Sunshine

December has the least sunshine of the year, 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. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in Milpitas?

The coldest month in Milpitas is December, with an average high-temperature of 56.3°F (13.5°C) and an average low-temperature of 42.6°F (5.9°C).

What is the temperature in December in Milpitas?

In December, in Milpitas, the average high-temperature is 56.3°F (13.5°C), and the average low-temperature is 42.6°F (5.9°C).

What is the average humidity in December in Milpitas?

In December, the average relative humidity in Milpitas, California, 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?

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

How many hours of daylight does Milpitas have in December?

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

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, California, the average sunshine in December is 6h.

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

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

What is the UV index reading in December in Milpitas?

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

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"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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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: 9.6h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 6h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6h).

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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

Months with the highest UV index are June, July and August (UV index 6).
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

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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