December weather forecast and climate
Hesperia, CA

Weather in December

December, the first month of the winter, in Hesperia, is still a cool month, with average temperature varying between 38.5°F (3.6°C) and 54.1°F (12.3°C).

Temperature

With an average high-temperature of 54.1°F (12.3°C) and an average low-temperature of 38.5°F (3.6°C), December is the coldest month.

Humidity

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

Rainfall

The month with the most rainfall in Hesperia is December when the rain falls for 6.2 days and typically aggregates up to 1.18" (30mm) of precipitation.

Snowfall

Months with snowfall in Hesperia are January through April, November and December. In Hesperia, during December, snow falls for 0.5 days and regularly aggregates up to 1.38" (35mm) of snow. Throughout the year, in Hesperia, there are 3.1 snowfall days, and 5.28" (134mm) of snow is accumulated.

Daylight

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

Sunshine

December has the least sunshine of the year, with an average of 7h of sunshine.

UV index

Months with the lowest UV index in Hesperia are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Hesperia?

December is the coldest month in Hesperia, with an average high-temperature of 54.1°F (12.3°C) and an average low-temperature of 38.5°F (3.6°C).

What is the temperature in December in Hesperia?

In Hesperia, in December, the average high-temperature is 54.1°F (12.3°C), and the average low-temperature is 38.5°F (3.6°C).

What is the most humid month in Hesperia?

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

What is the average humidity in December in Hesperia?

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

How many days does it rain in December in Hesperia?

In Hesperia, California, in December, during 6.2 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

What is the wettest month in Hesperia?

December is the month with the most rainfall in Hesperia, California. Rain falls for 6.2 days and accumulates 1.18" (30mm) of precipitation.

How many days does it snow in December in Hesperia?

In Hesperia, California, in December, during 0.5 snowfall days, 1.38" (35mm) of snow is typically accumulated.

What is the month with the shortest days in Hesperia?

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

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

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

What is the month with the least sunshine in Hesperia?

December has the least sunshine of the year in Hesperia, with an average of 7h of sunshine.

How long on average sun shines in December in Hesperia?

In December, the average sunshine in Hesperia is 7h.

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

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

How high is the UV index in December in Hesperia?

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

Average temperature in December
Hesperia, CA

Average temperature in December - Hesperia, CA
  • Average high temperature in December: 54.1°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (54.1°F).

  • Average low temperature in December: 38.5°F

The month with the highest average low temperature is August (67.5°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).

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Average pressure in December
Hesperia, CA

Average pressure in December - Hesperia, 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
Hesperia, CA

Average wind speed in December - Hesperia, CA
  • Average wind speed in December: 6.3mph

The windiest months (with the highest average wind speed) are April and May (9.1mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).

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Average humidity in December
Hesperia, CA

Average humidity in December - Hesperia, 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 (30%).

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Average rainfall in December
Hesperia, CA

Average rainfall in December - Hesperia, CA
  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is December (1.18").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Hesperia, CA

Average rainfall days in December - Hesperia, CA
  • Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (0.8 days).

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Average snowfall in December
Hesperia, CA

Average snowfall in December - Hesperia, CA
  • Average snowfall in December: 1.38"

The month with the highest snowfall is November (1.85").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Hesperia, CA

Average snowfall days in December - Hesperia, CA
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (1.4 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
Hesperia, CA

Average daylight in December / Average sunshine in December - Hesperia, 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).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days in December
Hesperia, CA

Average sunshine days in December - Hesperia, CA
  • Average sunshine days in December: 23.3 days

The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in December
Hesperia, CA

Average UV index in December - Hesperia, 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
Hesperia, CA

Average cloud cover in December - Hesperia, 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, August and September (Cloud cover 6).

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Average visibility in December
Hesperia, CA

Average visibility in December - Hesperia, 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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