December weather forecast and climate
Glendale, CA

The central business district area of Glendale in California
The central business district area of Glendale in California

Weather in December

The first month of the winter, December, is still a comfortable month in Glendale, California, with average temperature ranging between min 47.3°F (8.5°C) and max 62.4°F (16.9°C).

Temperature

December is the coldest month, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 47.3°F (8.5°C).

Humidity

The average relative humidity in Glendale is 53%.

Rainfall

In Glendale, California, in December, during 6.3 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, in Glendale, California, there are 50.4 rainfall days, and 8.35" (212mm) of precipitation is accumulated.

Snowfall

December is the only month when snow falls. December has the most snowfall days of the year in Glendale. Snow falls for 0.1 days.

Daylight

December has the shortest days of the year in Glendale, California, with an average of 9.9h of daylight.

Sunshine

Months with the least sunshine 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 Glendale. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
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. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Glendale?

The coldest month in Glendale is December, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 47.3°F (8.5°C).

What is the temperature in December in Glendale?

In Glendale, California, in December, the average high-temperature is 62.4°F (16.9°C), and the average low-temperature is 47.3°F (8.5°C).

What is the average humidity in December in Glendale?

The average relative humidity in December is 53%.

How much does it rain in Glendale in December?

In Glendale, California, in December, it is raining for 6.3 days, with typically 1.61" (41mm) of accumulated precipitation.

When does it start snowing in Glendale?

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

When does it snow the most in Glendale?

The month with the most snowfall days in Glendale, California, is December when snow falls for 0.1 days.

What is the month with the shortest days in Glendale?

The month with the shortest days in Glendale, California, is December, with an average of 9.9h of daylight.

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

The average length of the day in December in Glendale, California, is 9.9h.

What is the month with the least sunshine in Glendale?

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

How long on average sun shines in December in Glendale?

In December, the average sunshine is 6.9h.

When is the lowest UV index in Glendale?

Months with the lowest UV index in Glendale, California, are January, February, November and December, with an average maximum UV index of 4.

What is the UV index intensity in December in Glendale?

In Glendale, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in December
Glendale, CA

Average temperature in December - Glendale, CA
  • Average high temperature in December: 62.4°F

The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in December: 47.3°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (47.3°F).

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Average pressure in December
Glendale, CA

Average pressure in December - Glendale, CA
  • Average pressure in December: 30.08"

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

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Average wind speed in December
Glendale, CA

Average wind speed in December - Glendale, CA
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in December
Glendale, CA

Average humidity in December - Glendale, CA
  • Average humidity in December: 53%

The month with the highest relative humidity is June (60%).
The month with the lowest relative humidity is November (48%).

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Average rainfall in December
Glendale, CA

Average rainfall in December - Glendale, CA
  • Average rainfall in December: 1.61"

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
Glendale, CA

Average rainfall days in December - Glendale, CA
  • Average rainfall days in December: 6.3 days

The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.1 days).

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Average snowfall days in December
Glendale, CA

Average snowfall days in December - Glendale, 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
Glendale, CA

Average daylight in December / Average sunshine in December - Glendale, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.9h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 6.9).

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Average sunshine days in December
Glendale, CA

Average sunshine days in December - Glendale, CA
  • Average sunshine days in December: 23.7 days

The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (21 days).

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Average UV index in December
Glendale, CA

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

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

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Average cloud cover in December
Glendale, CA

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

Months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
Glendale, CA

Average visibility in December - Glendale, 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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