December weather forecast
Redding, CA

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Weather in December

Finishing off the year in Redding, California, December stays true to its winter character with the coldest temperatures and relevant high rainfall measuring 2.95" (75mm). The month witnesses a rare occurrence of snowfall, though very minimal at 0.31" (8mm), it adds a white tinge to the winter landscape. The daylight hours are at their lowest, and the cloud cover at its highest, providing a complete winter atmosphere. The wind contributes its cold gusts, enhancing the chill factor. As the year ends, Redding finds itself in the depths of winter, with December standing as a true winter month.

Temperature

December proves to be the coldest month, recording an average maximum temperature of 50.9°F (10.5°C) and a minimum temperature of 36.7°F (2.6°C).

Humidity

In December, the average relative humidity in Redding is 71%.

Rainfall

In December, the rain falls for 11.8 days. Throughout December, 2.95" (75mm) of precipitation is accumulated. Throughout the year, in Redding, there are 92.2 rainfall days, and 20.16" (512mm) of precipitation is accumulated.

Snowfall

February, March and December are months with snowfall. The month with the most snowfall is December, when snow falls for 0.2 days and typically aggregates up to 0.31" (8mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:14 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:33 am and sunset at 4:52 pm PST.

Sunshine

With an average of 5.5h of sunshine, December has the least sunshine of the year in Redding.

UV index

In Redding, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 3 in December translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Feb 9, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What are the coldest months in Redding?

In Redding, December records the average lowest temperatures, peaking at 50.9°F (10.5°C) and reaching a low of 36.7°F (2.6°C).

What is the temperature in December in Redding?

The average high-temperature, in December, in Redding, is 50.9°F (10.5°C), while the average low-temperature is 36.7°F (2.6°C). In June, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in December in Redding?

In December, the average relative humidity is 71%.

How many days does it rain in December in Redding?

In December, in Redding, California, the rain falls for 11.8 days. Throughout December, 2.95" (75mm) of precipitation is accumulated.

What is the snowiest month in Redding?

December is the month with the most snowfall in Redding. Snow falls for 0.2 days and accumulates 0.31" (8mm) of snow.

When does it start to snow in Redding?

December is the first month it typically snows in Redding, California. Throughout December, in the average 0.2 snowfall days, it receives 0.31" (8mm) of snow.

What is the month with the shortest days in Redding?

The month with the shortest days in Redding is December, with an average of 9h and 18min of daylight.

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

In Redding, California, the average day length in December is 9h and 20min.

When is the sunrise / sunset in December in Redding?

On the first day of December in Redding, sunrise is at 7:14 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:52 pm PST.

What is the month with the least sunshine in Redding?

The month with the least sunshine in Redding, California, is December, with an average of 5.5h of sunshine.

How long on average sun shines in December in Redding?

In December, the average sunshine duration is 5.5h.

What is the UV index reading in December in Redding?

In Redding, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Redding, CA

Average temperature in December - Redding, CA
  • Average high temperature in December: 50.9°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (50.9°F).

  • Average low temperature in December: 36.7°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is December (36.7°F).

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Average pressure in December
Redding, CA

Average pressure in December - Redding, CA
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

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Average wind speed in December
Redding, CA

Average wind speed in December - Redding, CA
  • Average wind speed in December: 4.5mph

The windiest months (with the highest average wind speed) are March and October (5.2mph).
The calmest months (with the lowest average wind speed) are August and November (4.3mph).

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Average humidity in December
Redding, CA

Average humidity in December - Redding, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is August (33%).

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Average rainfall in December
Redding, CA

Average rainfall in December - Redding, CA
  • Average rainfall in December: 2.95"

The wettest month (with the highest rainfall) is March (3.94").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in December
Redding, CA

Average rainfall days in December - Redding, CA
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is March (15.8 days).
The month with the least rainy days is August (1.3 days).

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Average snowfall in December
Redding, CA

Average snowfall in December - Redding, CA
  • Average snowfall in December: 0.31"

The month with the highest snowfall is December (0.31").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Redding, CA

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

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Redding, CA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 5h 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: 5h and 30min).

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Average sunshine days in December
Redding, CA

Average sunshine days in December - Redding, CA
  • Average sunshine days in December: 17.1 days

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (13.5 days).

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Average UV index in December
Redding, CA

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

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is February (UV index 2).

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Average cloud cover in December
Redding, CA

Average cloud cover in December - Redding, CA
  • Average cloud cover in December: 39

The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in December
Redding, CA

Average visibility in December - Redding, 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).

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Redding, California, USA

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