December weather forecast and climate
Loomis, CA

Weather in December

December, the first month of the winter, in Loomis, is also a fresh month, with average temperature ranging between max 54°F (12.2°C) and min 39.6°F (4.2°C).

Temperature

With an average high-temperature of 54°F (12.2°C) and an average low-temperature of 39.6°F (4.2°C), December is the coldest month.

Humidity

In December, the average relative humidity is 69%.

Rainfall

In Loomis, California, in December, it is raining for 11.3 days, with typically 3.78" (96mm) of accumulated precipitation. In Loomis, during the entire year, the rain falls for 81.2 days and collects up to 22.64" (575mm) of precipitation.

Snowfall

Months with snowfall are February and December. Months with the most snowfall are February and December, with an average 0.04" (1mm) of accumulated snow.

Daylight

With an average of 9.5h of daylight, December has the shortest days of the year in Loomis.

Sunshine

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

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Loomis?

With an average high-temperature of 54°F (12.2°C) and an average low-temperature of 39.6°F (4.2°C), December is the coldest month in Loomis, California.

What is the temperature in December in Loomis?

In December, in Loomis, California, the average high-temperature is 54°F (12.2°C), and the average low-temperature is 39.6°F (4.2°C).

What is the average humidity in December in Loomis?

In December, the average relative humidity in Loomis, California, is 69%.

How many days does it rain in December in Loomis?

In December, the rain falls for 11.3 days. Throughout December, 3.78" (96mm) of precipitation is accumulated.

When does it start to snow in Loomis?

December is the first month it typically snows in Loomis. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

When does it snow the most in Loomis?

Months with the most snowfall in Loomis are February and December, with an average 0.04" (1mm) of accumulated snow.

What is the month with the shortest days in Loomis?

With an average of 9.5h of daylight, December has the shortest days of the year in Loomis, California.

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

In December, the average length of the day in Loomis, California, is 9.5h.

What is the month with the least sunshine in Loomis?

The month with the least sunshine in Loomis, California, is December, with an average of 5.8h of sunshine.

How many hours of sunshine does Loomis have in December?

In December, the average sunshine is 5.8h.

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

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

What is the UV index intensity in December in Loomis?

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in December
Loomis, CA

Average temperature in December - Loomis, CA
  • Average high temperature in December: 54°F

The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (54°F).

  • Average low temperature in December: 39.6°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is December (39.6°F).

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Average pressure in December
Loomis, CA

Average pressure in December - Loomis, CA
  • Average pressure in December: 30.13"

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

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Average wind speed in December
Loomis, CA

Average wind speed in December - Loomis, CA
  • Average wind speed in December: 4.8mph

The windiest month (with the highest average wind speed) is February (5.5mph).
The calmest months (with the lowest average wind speed) are August and September (4mph).

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Average humidity in December
Loomis, CA

Average humidity in December - Loomis, CA
  • Average humidity in December: 69%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (40%).

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Average rainfall in December
Loomis, CA

Average rainfall in December - Loomis, CA
  • Average rainfall in December: 3.78"

The wettest month (with the highest rainfall) is March (4.33").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Loomis, CA

Average rainfall days in December - Loomis, CA
  • Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is March (14.6 days).
The month with the least rainy days is July (1 days).

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Average snowfall in December
Loomis, CA

Average snowfall in December - Loomis, CA
  • Average snowfall in December: 0.04"

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

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Average snowfall days in December
Loomis, CA

Average snowfall days in December - Loomis, CA
  • Average snowfall days in December: 0.2 days

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

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Average daylight in December /
Average sunshine in December
Loomis, CA

Average daylight in December / Average sunshine in December - Loomis, CA
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5.8h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in December
Loomis, CA

Average sunshine days in December - Loomis, CA
  • Average sunshine days in December: 19.3 days

The month with the most sunshine days is July (29.2 days).
The month with the least sunshine days is March (15.7 days).

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Average UV index in December
Loomis, CA

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

Months with the highest UV index are June and July (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
Loomis, CA

Average cloud cover in December - Loomis, CA
  • Average cloud cover in December: 34

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in December
Loomis, CA

Average visibility in December - Loomis, 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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