December weather forecast and climate
Adelanto, CA

Weather in December

The first month of the winter, December, is also a fresh month in Adelanto, California, with temperature in the range of an average high of 53.2°F (11.8°C) and an average low of 38.3°F (3.5°C).

Temperature

December is the coldest month, with an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 38.3°F (3.5°C).

Humidity

The most humid month in Adelanto is December, with an average relative humidity of 52%.

Rainfall

The month with the most rainfall in Adelanto is December when the rain falls for 5.4 days and typically aggregates up to 0.98" (25mm) of precipitation.

Snowfall

Months with snowfall in Adelanto are January, February, April, November and December. In Adelanto, snow falls for 0.3 days, with typically accumulated 0.91" (23mm) of snow. In Adelanto, during the entire year, snow falls for 2.1 days, and aggregates up to 3.78" (96mm) of snow.

Daylight

With an average of 9.9h of daylight, December has the shortest days of the year.

Sunshine

Months with the least sunshine are January and December, with an average of 7h of sunshine.

UV index

Months with the lowest UV index in Adelanto are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 Adelanto?

With an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 38.3°F (3.5°C), December is the coldest month in Adelanto.

What is the temperature in December in Adelanto?

In Adelanto, California, in December, the average high-temperature is 53.2°F (11.8°C), and the average low-temperature is 38.3°F (3.5°C).

What is the most humid month in Adelanto?

December is the most humid month in Adelanto, with an average relative humidity of 52%.

What is the average humidity in December in Adelanto?

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

How much does it rain in Adelanto in December?

In December, the rain falls for 5.4 days. Throughout December, 0.98" (25mm) of precipitation is accumulated.

What is the wettest month in Adelanto?

December is the month with the most rainfall. Rain falls for 5.4 days and accumulates 0.98" (25mm) of precipitation.

How much does it snow in Adelanto in December?

In Adelanto, in December, during 0.3 snowfall days, 0.91" (23mm) of snow is typically accumulated.

What is the month with the shortest days in Adelanto?

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

How many hours of daylight does Adelanto have in December?

In December, the average length of the day is 9.9h.

What is the month with the least sunshine in Adelanto?

January and December, with an average of 7h of sunshine, are months with the least sunshine.

How many hours of sunshine does Adelanto have in December?

In Adelanto, California, the average sunshine in December is 7h.

When is the lowest UV index in Adelanto?

Months with the lowest UV index in Adelanto are January, February, November and December, with an average maximum UV index of 3.

What is the UV index intensity in December in Adelanto?

In December, the average daily maximum UV index in Adelanto is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in December
Adelanto, CA

Average temperature in December - Adelanto, CA
  • Average high temperature in December: 53.2°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is December (53.2°F).

  • Average low temperature in December: 38.3°F

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).

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Average pressure in December
Adelanto, CA

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

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in December
Adelanto, CA

Average wind speed in December - Adelanto, CA
  • Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is May (10.3mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

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Average humidity in December
Adelanto, CA

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

The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (27%).

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Average rainfall in December
Adelanto, CA

Average rainfall in December - Adelanto, CA
  • Average rainfall in December: 0.98"

The wettest month (with the highest rainfall) is December (0.98").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Adelanto, CA

Average rainfall days in December - Adelanto, CA
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (0.9 days).

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Average snowfall in December
Adelanto, CA

Average snowfall in December - Adelanto, CA
  • Average snowfall in December: 0.91"

The month with the highest snowfall is November (1.73").
Months with the least snowfall are March, May, June, July, August, September and October (0").

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Average snowfall days in December
Adelanto, CA

Average snowfall days in December - Adelanto, CA
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is February (1 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Adelanto, 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: 7h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
Months with the least sunshine are January and December (Average sunshine: 7).

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Average sunshine days in December
Adelanto, CA

Average sunshine days in December - Adelanto, CA
  • Average sunshine days in December: 24.6 days

The month with the most sunshine days is June (28.9 days).
The month with the least sunshine days is February (22.4 days).

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Average UV index in December
Adelanto, CA

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

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Adelanto, CA

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

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

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Average visibility in December
Adelanto, CA

Average visibility in December - Adelanto, 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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