December weather forecast
Mira Loma, CA

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Weather in December

The first month of the winter, December, is still a refreshing month in Mira Loma, California, with temperature in the range of an average high of 63.3°F (17.4°C) and an average low of 45.9°F (7.7°C).

Temperature

December is the coldest month, exhibiting average temperatures of 63.3°F (17.4°C) at the peak and 45.9°F (7.7°C) at the base.

Humidity

The average relative humidity in December is 51%.

Rainfall

The months with the most rainfall are February and December, with an average 1.61" (41mm) of precipitation.

Snowfall

In Mira Loma, snow does not fall in January, March through December.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:37 am and sunset at 4:40 pm. On the last day of December, in Mira Loma, California, sunrise is at 6:55 am and sunset at 4:51 pm PST.

Sunshine

The months with the least sunshine are February and December, with an average of 6.8h of sunshine.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: During December, 3 as the daily maximum UV index converts into the following advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the coldest time of year in Mira Loma?

December, with an average high of 63.3°F (17.4°C) and a low of 45.9°F (7.7°C), signifies the coldest month of the year.

What is the temperature in December in Mira Loma?

An average high-temperature, in December, in Mira Loma, is 63.3°F (17.4°C) and the average low-temperature is 45.9°F (7.7°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is calculated to be 89.6°F (32°C).

What is the average humidity in December in Mira Loma?

In December, the average relative humidity in Mira Loma, California, is 51%.

What is the rainiest month in Mira Loma?

The months with the most rainfall in Mira Loma are February and December, with an average 1.61" (41mm) of precipitation.

How many days does it rain in December in Mira Loma?

In Mira Loma, California, during December, the rain falls for 5.8 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow in Mira Loma?

January, March through December are months without snowfall in Mira Loma.

What is the month with the shortest days in Mira Loma?

The month with the shortest days in Mira Loma is December, with an average of 9h and 54min of daylight.

How many hours of daylight does Mira Loma have in December?

In Mira Loma, the average day length in December is 9h and 56min.

When is the sunrise / sunset in December in Mira Loma?

On the first day of December, sunrise is at 6:37 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:51 pm PST.

What is the month with the least sunshine in Mira Loma?

February and December, with an average of 6.8h of sunshine, are months with the least sunshine.

How long on average sun shines in December in Mira Loma?

In December, the average sunshine duration in Mira Loma is 6.8h.

When is the lowest UV index in Mira Loma?

With an average maximum UV index of 3, December is the month with the lowest UV index.

What is the UV index intensity in December in Mira Loma?

The average daily maximum UV index in December in Mira Loma, California, is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Mira Loma, CA

Average temperature in December - Mira Loma, CA
  • Average high temperature in December: 63.3°F

The warmest month (with the highest average high temperature) is August (91.2°F).
The month with the lowest average high temperature is December (63.3°F).

  • Average low temperature in December: 45.9°F

The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (45.9°F).

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Average pressure in December
Mira Loma, CA

Average pressure in December - Mira Loma, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in December
Mira Loma, CA

Average wind speed in December - Mira Loma, CA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is May (5.6mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in December
Mira Loma, CA

Average humidity in December - Mira Loma, CA
  • Average humidity in December: 51%

The month with the highest relative humidity is May (56%).
The month with the lowest relative humidity is August (43%).

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Average rainfall in December
Mira Loma, CA

Average rainfall in December - Mira Loma, CA
  • Average rainfall in December: 1.61"

The wettest months (with the highest rainfall) are February and December (1.61").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Mira Loma, CA

Average rainfall days in December - Mira Loma, CA
  • Average rainfall days in December: 5.8 days

The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1.1 days).

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Average snowfall days in December
Mira Loma, CA

Average snowfall days in December - Mira Loma, CA
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in December /
Average sunshine in December
Mira Loma, CA

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Mira Loma, CA

Average sunshine days in December - Mira Loma, CA
  • Average sunshine days in December: 23.8 days

The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in December
Mira Loma, CA

Average UV index in December - Mira Loma, CA
  • Average UV index in December: 3

The months with the highest UV index are 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
Mira Loma, CA

Average cloud cover in December - Mira Loma, CA
  • Average cloud cover in December: 22

The months with the most cloud cover are February and March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
Mira Loma, CA

Average visibility in December - Mira Loma, 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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Mira Loma, California, USA

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