December weather forecast
Lamont, CA

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Weather in December

December, the first month of the winter in Lamont, is still a mild month, with an average temperature varying between 38.3°F (3.5°C) and 56.3°F (13.5°C).

Temperature

Temperature readings reach their annual highs in December, averaging 56.3°F (13.5°C) and a minimum average of 38.3°F (3.5°C).

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 58%.

Rainfall

The month with the most rainfall is December, when the rain falls for 6.5 days and typically aggregates up to 1.22" (31mm) of precipitation.

Snowfall

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

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 6:46 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:04 am and sunset at 4:53 pm PST.

Sunshine

January and December, with an average of 6.9h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a regular UV index of 3 translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

In Lamont, the lowest temperatures are generally noted in December, averaging a high of 56.3°F (13.5°C) and a low of 38.3°F (3.5°C).

What are December temperatures in Lamont?

December temperatures vary between a high-temperature of 56.3°F (13.5°C) and a low-temperature of 38.3°F (3.5°C).

What is the most humid month in Lamont?

February and December, with an average relative humidity of 58%, are most humid months.

What is the average humidity in December?

In December, the average relative humidity is 58%.

What is the wettest month?

December is the month with the most rainfall. Rain falls for 6.5 days and accumulates 1.22" (31mm) of precipitation.

How much does it rain in December?

In Lamont, in December, it is raining for 6.5 days, with typically 1.22" (31mm) of accumulated precipitation.

When it does not snow?

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

What is the month with the shortest days?

With an average of 9h and 48min of daylight, December has the shortest days of the year in Lamont.

How many hours of daylight does Lamont have in December?

In Lamont, the average day length in December is 9h and 50min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 6:46 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 4:53 pm PST.

What are the months with the least sunshine?

The months with the least sunshine are January and December, with an average of 6.9h of sunshine.

How long on average sun shines in December?

The average sunshine duration in December is 6.9h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average max. wind speed
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
Lamont, CA

Average temperature in December - Lamont, CA
  • Average high temperature in December: 56.3°F

The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in December: 38.3°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).

Average pressure in December
Lamont, CA

Average pressure in December - Lamont, CA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in December
Lamont, CA

Average wind speed in December - Lamont, CA
  • Average wind speed in December: 4.3mph

The windiest month (with the highest average wind speed) is June (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).

Average humidity in December
Lamont, CA

Average humidity in December - Lamont, CA
  • Average humidity in December: 58%

The months with the highest relative humidity are February and December (58%).
The month with the lowest relative humidity is August (29%).

Average rainfall in December
Lamont, CA

Average rainfall in December - Lamont, CA
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is December (1.22").
The driest months (with the least rainfall) are June and August (0.08").

Average rainfall days in December
Lamont, CA

Average rainfall days in December - Lamont, CA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is March (8.5 days).
The month with the least rainy days is June (1.4 days).

Average snowfall in December
Lamont, CA

Average snowfall in December - Lamont, 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
Lamont, CA

Average snowfall days in December - Lamont, CA
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (0.3 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
Lamont, CA

Average daylight in December / Average sunshine in December - Lamont, 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 48min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 6h and 54min).

Average sunshine days in December
Lamont, CA

Average sunshine days in December - Lamont, CA
  • Average sunshine days in December: 22.7 days

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is February (20.5 days).

Average UV index in December
Lamont, CA

Average UV index in December - Lamont, 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
Lamont, CA

Average cloud cover in December - Lamont, CA
  • Average cloud cover in December: 22

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

Average visibility in December
Lamont, CA

Average visibility in December - Lamont, 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).

Lamont, California, USA

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