December weather forecast
Lennox, CA

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Weather in December

The first month of the winter, December, is still a comfortable month in Lennox, California, with an average temperature varying between 64°F (17.8°C) and 50.9°F (10.5°C).

Temperature

December, characterized by an average high temperature of 64°F (17.8°C) and a low temperature of 50.9°F (10.5°C), is generally the coldest month.

Humidity

In Lennox, the average relative humidity in December is 56%.

Rainfall

In Lennox, in December, it is raining for 4.3 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, there are 29.8 rainfall days, and 2.48" (63mm) of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 6:41 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:55 pm PST.

Sunshine

The months with the least sunshine are February and December, with an average of 6.7h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 4 transforms into these recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

Lennox notes the coldest temperatures in December, with a average high of 64°F (17.8°C) and a low of 50.9°F (10.5°C).

What is the usual temperature for Lennox in December?

In December, in Lennox, the average high-temperature is 64°F (17.8°C), and the average low-temperature is 50.9°F (10.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is evaluated at 84.2°F (29°C).

What is the average humidity in December?

In December, the average relative humidity is 56%.

How many days does it rain in December in Lennox?

In December, the rain falls for 4.3 days. Throughout December, 0.51" (13mm) of precipitation is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

How many hours of daylight does Lennox have in December?

In Lennox, California, the average day length in December is 9h and 56min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:41 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:55 pm PST.

What are the months with the least sunshine in Lennox?

The months with the least sunshine are February and December, with an average of 6.7h of sunshine.

How many hours of sunshine does Lennox have in December?

The average sunshine duration in December is 6.7h.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4.

How high is the UV index in December?

In December, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Lennox, CA

Average temperature in December - Lennox, CA
  • Average high temperature in December: 64°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (64°F).

  • Average low temperature in December: 50.9°F

The month with the highest average low temperature is August (64.9°F).
The coldest months (with the lowest average low temperature) are February and December (50.9°F).

Average pressure in December
Lennox, CA

Average pressure in December - Lennox, 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 (29.89"Hg).

Average wind speed in December
Lennox, CA

Average wind speed in December - Lennox, CA
  • Average wind speed in December: 5.6mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).

Average humidity in December
Lennox, CA

Average humidity in December - Lennox, CA
  • Average humidity in December: 56%

The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (53%).

Average rainfall in December
Lennox, CA

Average rainfall in December - Lennox, CA
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is February (0.55").
The driest month (with the least rainfall) is June (0").

Average rainfall days in December
Lennox, CA

Average rainfall days in December - Lennox, CA
  • Average rainfall days in December: 4.3 days

The month with the highest number of rainy days is March (5.1 days).
The month with the least rainy days is June (0.4 days).

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

Average daylight in December / Average sunshine in December - Lennox, 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 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The months with the least sunshine are February and December (Average sunshine: 6h and 42min).

Average sunshine days in December
Lennox, CA

Average sunshine days in December - Lennox, CA
  • Average sunshine days in December: 25.5 days

The month with the most sunshine days is June (29.1 days).
The month with the least sunshine days is February (23.7 days).

Average UV index in December
Lennox, CA

Average UV index in December - Lennox, CA
  • Average UV index in December: 4

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).

Average cloud cover in December
Lennox, CA

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

The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).

Average visibility in December
Lennox, CA

Average visibility in December - Lennox, 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).

Lennox, California, USA

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