December weather forecast
Loma Rica, CA

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Weather in December

December, the first month of the winter in Loma Rica, is still a cool month, with an average temperature fluctuating between 39.7°F (4.3°C) and 53.6°F (12°C).

Temperature

In Loma Rica, California, the lowest temperatures are generally noted in December, averaging a high of 53.6°F (12°C) and a low of 39.7°F (4.3°C).

Humidity

The average relative humidity in December is 68%.

Rainfall

In December, the rain falls for 9.8 days. Throughout December, 2.72" (69mm) of precipitation is accumulated. In Loma Rica, during the entire year, the rain falls for 71.4 days and collects up to 15.31" (389mm) of precipitation.

Snowfall

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

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:52 pm PST.

Sunshine

With an average of 5.8h of sunshine, December has the least sunshine of the year in Loma Rica.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 3 transforms into these recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

Loma Rica, California, experiences its average lowest temperatures in December, reaching a peak of 53.6°F (12°C) and a minimum of 39.7°F (4.3°C).

What are the temperatures in December?

In December, the average high-temperature and low-temperature are 53.6°F (12°C) and 39.7°F (4.3°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in June is estimated at 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 68%.

How many days does it rain in December?

In Loma Rica, during December, the rain falls for 9.8 days and regularly aggregates up to 2.72" (69mm) of precipitation.

When it does not snow?

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

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

The month with the shortest days is December, with an average of 9h and 30min of daylight.

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

The average day length in December is 9h and 27min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:52 pm PST.

What is the month with the least sunshine?

With an average of 5.8h of sunshine, December has the least sunshine of the year.

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

The average sunshine duration in December is 5.8h.

When is the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to 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
Loma Rica, CA

Average temperature in December - Loma Rica, CA
  • Average high temperature in December: 53.6°F

The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (53.6°F).

  • Average low temperature in December: 39.7°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (39.7°F).

Average pressure in December
Loma Rica, CA

Average pressure in December - Loma Rica, CA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Loma Rica, CA

Average wind speed in December - Loma Rica, CA
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is March (6mph).
The calmest months (with the lowest average wind speed) are August and November (5mph).

Average humidity in December
Loma Rica, CA

Average humidity in December - Loma Rica, CA
  • Average humidity in December: 68%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (35%).

Average rainfall in December
Loma Rica, CA

Average rainfall in December - Loma Rica, CA
  • Average rainfall in December: 2.72"

The wettest month (with the highest rainfall) is March (2.87").
The driest month (with the least rainfall) is July (0.04").

Average rainfall days in December
Loma Rica, CA

Average rainfall days in December - Loma Rica, CA
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (1.6 days).

Average snowfall in December
Loma Rica, CA

Average snowfall in December - Loma Rica, CA
  • Average snowfall in December: 0"

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

Average snowfall days in December
Loma Rica, CA

Average snowfall days in December - Loma Rica, CA
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in December / Average sunshine in December - Loma Rica, CA
  • Average daylight in December: 9h and 3min

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

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in December
Loma Rica, CA

Average sunshine days in December - Loma Rica, CA
  • Average sunshine days in December: 20.7 days

The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (17.4 days).

Average UV index in December
Loma Rica, CA

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

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

Average cloud cover in December
Loma Rica, CA

Average cloud cover in December - Loma Rica, CA
  • Average cloud cover in December: 35

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in December
Loma Rica, CA

Average visibility in December - Loma Rica, 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).

Loma Rica, California, USA

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