December weather forecast and climate
Redding, CA

The first month of the winter, December, is still a cool month in Redding, California, with average temperature fluctuating between 50.9°F (10.5°C) and 36.7°F (2.6°C).

Temperature

The coldest month is December, with an average high-temperature of 50.9°F (10.5°C) and an average low-temperature of 36.7°F (2.6°C).

Humidity

The average relative humidity in Redding is 71%.

Rainfall

In Redding, it is raining for 11.8 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, there are 92.2 rainfall days, and 20.16" (512mm) of precipitation is accumulated.

Snowfall

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

Daylight

December has the shortest days of the year in Redding, with an average of 9.3h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 5.5h of sunshine.

UV index

In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 3 interpret into the following advice:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Redding?

The coldest month in Redding is December, with an average high-temperature of 50.9°F (10.5°C) and an average low-temperature of 36.7°F (2.6°C).

What is the temperature in December in Redding?

In Redding, in December, the average high-temperature is 50.9°F (10.5°C), and the average low-temperature is 36.7°F (2.6°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 Redding, California, during December, the rain falls for 11.8 days and regularly aggregates up to 2.95" (75mm) of precipitation.

When does it start snowing in Redding?

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

What is the snowiest month in Redding?

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.

What is the month with the shortest days in Redding?

With an average of 9.3h of daylight, December has the shortest days of the year in Redding, California.

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

In December, the average length of the day in Redding, California, is 9.3h.

What is the month with the least sunshine in Redding?

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

How many hours of sunshine does Redding have in December?

The average sunshine in December in Redding is 5.5h.

What is the UV index reading in December in Redding?

The average daily maximum UV index in December in Redding, California, is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.
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).

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

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

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).

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%).

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").

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).

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

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

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).
Months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Redding, CA
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 5.5h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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).

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

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).

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).
Months with the least cloud cover are July and August (Cloud cover 5).

Average visibility in December - Redding, 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).