December weather forecast
Radec, CA

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Weather in December

December, the first month of the winter in Radec, is still a refreshing month, with an average temperature varying between 43.5°F (6.4°C) and 61.7°F (16.5°C).

Temperature

Radec notes the coldest temperatures in December, with a high average of 61.7°F (16.5°C) and a low of 43.5°F (6.4°C).

Humidity

In Radec, the average relative humidity in December is 58%.

Rainfall

The month with the most rainfall is December, when the rain falls for 6.5 days and typically aggregates up to 1.81" (46mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of December, sunrise is at 6:34 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:50 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6.5h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 3 in December transforms into this advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

December is Radec's coldest month, registering average high temperatures of 61.7°F (16.5°C) and lows of 43.5°F (6.4°C).

What is the temperature in December?

The average high-temperature, in December, in Radec, is 61.7°F (16.5°C), while the average low-temperature is 43.5°F (6.4°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 87.8°F (31°C).

What is the average humidity in December?

In Radec, the average relative humidity in December is 58%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 6.5 days and typically aggregates up to 1.81" (46mm) of precipitation.

How much does it rain in December?

In Radec, in December, it is raining for 6.5 days, with typically 1.81" (46mm) of accumulated precipitation.

What is the month with the shortest days?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

How many hours of daylight does Radec have in December?

In December, the average day length in Radec is 9h and 59min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:34 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:50 pm PST.

What is the month with the least sunshine?

With an average of 6.5h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Radec have in December?

In December, the average sunshine duration is 6.5h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes 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
Radec, CA

Average temperature in December - Radec, CA
  • Average high temperature in December: 61.7°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in December: 43.5°F

The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).

Average pressure in December
Radec, CA

Average pressure in December - Radec, CA
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in December
Radec, CA

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

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

Average humidity in December
Radec, CA

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

The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).

Average rainfall in December
Radec, CA

Average rainfall in December - Radec, CA
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in December
Radec, CA

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

The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.4 days).

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

Average daylight in December / Average sunshine in December - Radec, CA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

Average sunshine days in December
Radec, CA

Average sunshine days in December - Radec, CA
  • Average sunshine days in December: 23.4 days

The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.8 days).

Average UV index in December
Radec, CA

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Radec, CA

Average cloud cover in December - Radec, CA
  • Average cloud cover in December: 26

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 7).

Average visibility in December
Radec, CA

Average visibility in December - Radec, 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).

Radec, California, USA

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