December weather forecast
Yermo, CA

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Weather in December

The first month of the winter, December, is also a fresh month in Yermo, California, with an average temperature ranging between max 55°F (12.8°C) and min 40.1°F (4.5°C).

Temperature

December tends to be the coldest month, with temperatures averaging a daily high of 55°F (12.8°C) and a low of 40.1°F (4.5°C).

Humidity

With an average relative humidity of 47%, December is the most humid month.

Rainfall

December is the month with the most rainfall in Yermo. Rain falls for 4.6 days and accumulates 0.51" (13mm) of precipitation.

Snowfall

In Yermo, California, snow does not fall in February through December.

Daylight

December has the shortest days of the year in Yermo, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 6:37 am and sunset at 4:35 pm. On the last day of December, sunrise is at 6:54 am and sunset at 4:46 pm PST.

Sunshine

The average sunshine in December is 7.2h.

UV index

The months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What month is the coldest in Yermo?

Yermo, California, reaches its average lowest temperatures in December, measuring 55°F (12.8°C) at the peak and 40.1°F (4.5°C) at the lowest.

What are December temperatures in Yermo?

The high-temperature in Yermo, California, during December is 55°F (12.8°C) and the low-temperature is 40.1°F (4.5°C).

What is the most humid month in Yermo?

December is the most humid month in Yermo, with an average relative humidity of 47%.

What is the average humidity in December in Yermo?

In December, the average relative humidity is 47%.

What is the rainiest month in Yermo?

The month with the most rainfall in Yermo is December, when the rain falls for 4.6 days and typically aggregates up to 0.51" (13mm) of precipitation.

How many days does it rain in December in Yermo?

In Yermo, California, in December, it is raining for 4.6 days, with typically 0.51" (13mm) of accumulated precipitation.

When it does not snow in Yermo?

In Yermo, snow does not fall in February through December.

Does it snow in Yermo in December?

In Yermo, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Yermo?

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

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

In Yermo, California, the average day length in December is 9h and 52min.

When are sunrise and sunset in December in Yermo?

On the first day of December in Yermo, California, sunrise is at 6:37 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 4:46 pm PST.

How long on average sun shines in December in Yermo?

In December, the average sunshine duration in Yermo, California, is 7.2h.

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

The months with the lowest UV index are November and December, with an average maximum UV index of 3.

What is the UV index intensity in December in Yermo?

The average daily maximum UV index in December in Yermo, California, is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Yermo, CA

Average temperature in December - Yermo, CA
  • Average high temperature in December: 55°F

The warmest month (with the highest average high temperature) is July (98.2°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in December: 40.1°F

The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).

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Average pressure in December
Yermo, CA

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.79"Hg).

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Average wind speed in December
Yermo, CA

Average wind speed in December - Yermo, CA
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is May (11.7mph).
The calmest month (with the lowest average wind speed) is January (6mph).

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Average humidity in December
Yermo, CA

Average humidity in December - Yermo, CA
  • Average humidity in December: 47%

The month with the highest relative humidity is December (47%).
The month with the lowest relative humidity is August (21%).

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Average rainfall in December
Yermo, CA

Average rainfall in December - Yermo, CA
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is December (0.51").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Yermo, CA

Average rainfall days in December - Yermo, CA
  • Average rainfall days in December: 4.6 days

The month with the highest number of rainy days is December (4.6 days).
The month with the least rainy days is June (0.6 days).

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Average snowfall in December
Yermo, CA

Average snowfall in December - Yermo, CA
  • Average snowfall in December: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in December
Yermo, CA

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

The months with the highest number of snowfall days are January and December (0.3 days).
The months with the least snowfall days are 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
Yermo, CA

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

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 7h and 1min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 7h and 6min).

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Average sunshine days in December
Yermo, CA

Average sunshine days in December - Yermo, CA
  • Average sunshine days in December: 25.4 days

The month with the most sunshine days is June (29 days).
The month with the least sunshine days is February (23.5 days).

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Average UV index in December
Yermo, CA

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

The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in December
Yermo, CA

Average cloud cover in December - Yermo, CA
  • Average cloud cover in December: 18

The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 4).

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Average visibility in December
Yermo, CA

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

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