December weather forecast
Alhambra, CA

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Weather in December

December, the first month of the winter in Alhambra, is still a comfortable month, with an average temperature varying between 63.1°F (17.3°C) and 47.8°F (8.8°C).

Temperature

December proves to be the coldest month, recording an average maximum temperature of 63.1°F (17.3°C) and a minimum temperature of 47.8°F (8.8°C).

Humidity

In December, the average relative humidity in Alhambra is 52%.

Rainfall

In Alhambra, during December, the rain falls for 6 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 49.2 rainfall days, and 8.23" (209mm) of precipitation is accumulated.

Snowfall

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

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of December in Alhambra, sunrise is at 6:40 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:53 pm PST.

Sunshine

The months with the least sunshine in Alhambra, California, are January, February and December, with an average of 6.9h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Alhambra, California. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 4 in December transforms into this advice:
Heed the precautions - It is counselled to guard against solar damage. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

What is the coldest time of year in Alhambra?

Alhambra, California, records the coldest temperatures in December, averaging a high of 63.1°F (17.3°C) and a low of 47.8°F (8.8°C).

What are December temperatures in Alhambra?

In Alhambra, in December, the average high-temperature is 63.1°F (17.3°C), and the average low-temperature is 47.8°F (8.8°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 86°F (30°C).

What is the average humidity in December in Alhambra?

In December, the average relative humidity in Alhambra, California, is 52%.

How much does it rain in Alhambra in December?

In Alhambra, California, during December, the rain falls for 6 days and regularly aggregates up to 1.65" (42mm) of precipitation.

What is the snowiest month in Alhambra?

December has the most snowfall days of the year in Alhambra. Snow falls for 0.1 days.

When does it start snowing in Alhambra?

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

What is the month with the shortest days in Alhambra?

With an average of 9h and 54min of daylight, December has the shortest days of the year in Alhambra, California.

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

In Alhambra, the average day length in December is 9h and 56min.

When are sunrise and sunset in December in Alhambra?

On the first day of December, sunrise is at 6:40 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:53 pm PST.

What are the months with the least sunshine in Alhambra?

The months with the least sunshine are January, February and December, with an average of 6.9h of sunshine.

How long on average sun shines in December in Alhambra?

The average sunshine duration in December in Alhambra, California, is 6.9h.

When is the lowest UV index in Alhambra?

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Alhambra.

What is the UV index reading in December in Alhambra?

In Alhambra, California, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Alhambra, CA

Average temperature in December - Alhambra, CA
  • Average high temperature in December: 63.1°F

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in December: 47.8°F

The month with the highest average low temperature is August (65.7°F).
The coldest months (with the lowest average low temperature) are February and December (47.8°F).

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Average pressure in December
Alhambra, CA

Average pressure in December - Alhambra, CA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
Alhambra, CA

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

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in December
Alhambra, CA

Average humidity in December - Alhambra, CA
  • Average humidity in December: 52%

The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).

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Average rainfall in December
Alhambra, CA

Average rainfall in December - Alhambra, CA
  • Average rainfall in December: 1.65"

The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Alhambra, CA

Average rainfall days in December - Alhambra, CA
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1 days).

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Average snowfall days in December
Alhambra, CA

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

The month with the highest number of snowfall days is December (0.1 days).
The 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
Alhambra, CA

Average daylight in December / Average sunshine in December - Alhambra, CA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).

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Average sunshine days in December
Alhambra, CA

Average sunshine days in December - Alhambra, CA
  • Average sunshine days in December: 23.5 days

The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (21 days).

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Average UV index in December
Alhambra, CA

Average UV index in December - Alhambra, CA
  • Average UV index in December: 4

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in December
Alhambra, CA

Average cloud cover in December - Alhambra, CA
  • Average cloud cover in December: 21

The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in December
Alhambra, CA

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

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