December weather forecast and climate
Rancho Mirage, CA

Weather in December

The first month of the winter, December, is also a moderate month in Rancho Mirage, California, with average temperature varying between 58.1°F (14.5°C) and 42.8°F (6°C).

Temperature

December is the coldest month, with an average high-temperature of 58.1°F (14.5°C) and an average low-temperature of 42.8°F (6°C).

Humidity

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

Rainfall

In Rancho Mirage, during 5.4 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Rancho Mirage, California, during the entire year, the rain falls for 54 days and collects up to 6.57" (167mm) of precipitation.

Daylight

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

Sunshine

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

UV index

December is the month with the lowest UV index in Rancho Mirage, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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.
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FAQ

What is the coldest month in Rancho Mirage?

The coldest month in Rancho Mirage, California, is December, with an average high-temperature of 58.1°F (14.5°C) and an average low-temperature of 42.8°F (6°C).

What is the temperature in December in Rancho Mirage?

In December, in Rancho Mirage, the average high-temperature is 58.1°F (14.5°C), and the average low-temperature is 42.8°F (6°C).

What is the most humid month in Rancho Mirage?

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

What is the average humidity in December in Rancho Mirage?

The average relative humidity in December is 47%.

How many days does it rain in December in Rancho Mirage?

In Rancho Mirage, in December, it is raining for 5.4 days, with typically 0.91" (23mm) of accumulated precipitation.

What is the month with the shortest days in Rancho Mirage?

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

What is the average length of the day in December in Rancho Mirage?

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

What is the month with the least sunshine in Rancho Mirage?

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

How long on average sun shines in December in Rancho Mirage?

In Rancho Mirage, the average sunshine in December is 7h.

When is the lowest UV index in Rancho Mirage?

December is the month with the lowest UV index in Rancho Mirage, California, with an average maximum UV index of 3.

What is the UV index reading in December in Rancho Mirage?

In December, the average daily maximum UV index in Rancho Mirage is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in December
Rancho Mirage, CA

Average temperature in December - Rancho Mirage, CA
  • Average high temperature in December: 58.1°F

The warmest months (with the highest average high temperature) are July and August (93.7°F).
The month with the lowest average high temperature is December (58.1°F).

  • Average low temperature in December: 42.8°F

The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is December (42.8°F).

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Average pressure in December
Rancho Mirage, CA

Average pressure in December - Rancho Mirage, CA
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.81").

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Average wind speed in December
Rancho Mirage, CA

Average wind speed in December - Rancho Mirage, CA
  • Average wind speed in December: 6.1mph

The windiest month (with the highest average wind speed) is May (8.8mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).

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Average humidity in December
Rancho Mirage, CA

Average humidity in December - Rancho Mirage, CA
  • Average humidity in December: 47%

The month with the highest relative humidity is December (47%).
Months with the lowest relative humidity are June, July and August (29%).

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Average rainfall in December
Rancho Mirage, CA

Average rainfall in December - Rancho Mirage, CA
  • Average rainfall in December: 0.91"

The wettest month (with the highest rainfall) is July (1.14").
The driest months (with the least rainfall) are May and June (0.12").

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Average rainfall days in December
Rancho Mirage, CA

Average rainfall days in December - Rancho Mirage, CA
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is June (1.5 days).

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Average daylight in December /
Average sunshine in December
Rancho Mirage, CA

Average daylight in December / Average sunshine in December - Rancho Mirage, 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

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days in December
Rancho Mirage, CA

Average sunshine days in December - Rancho Mirage, CA
  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (19.1 days).

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Average UV index in December
Rancho Mirage, CA

Average UV index in December - Rancho Mirage, CA
  • Average UV index in December: 3

Months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Rancho Mirage, CA

Average cloud cover in December - Rancho Mirage, CA
  • Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in December
Rancho Mirage, CA

Average visibility in December - Rancho Mirage, 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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