December weather forecast
Red Bluff, CA

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Weather in December

December, the first month of the winter in Red Bluff, is also a fresh month, with an average temperature ranging between max 52.7°F (11.5°C) and min 39.6°F (4.2°C).

Temperature

In Red Bluff, the lowest average temperatures are observed in December, with a high of 52.7°F (11.5°C) and a low of 39.6°F (4.2°C).

Humidity

The average relative humidity in December is 68%.

Rainfall

The wettest months in Red Bluff are March and December, with an average 3.27" (83mm) of rainfall.

Snowfall

Months with snowfall are February and December. December is the first month it typically snows in Red Bluff. Throughout December, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Red Bluff, there are 0.4 snowfall days, and 0.2" (5mm) of snow is accumulated.

Daylight

The month with the shortest days in Red Bluff is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:43 pm. On the last day of December, in Red Bluff, sunrise is at 7:31 am and sunset at 4:53 pm PST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.8h of 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 of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 3 in December suggests the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the coldest month in Red Bluff?

In Red Bluff, December records the average lowest temperatures, peaking at 52.7°F (11.5°C) and reaching a low of 39.6°F (4.2°C).

What is the average December temperature in Red Bluff?

The high-temperature, in December, in Red Bluff, records 52.7°F (11.5°C), while the low-temperature is 39.6°F (4.2°C). In June, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 87.8°F (31°C).

What is the average humidity in December in Red Bluff?

In December, the average relative humidity in Red Bluff is 68%.

What is the rainiest month in Red Bluff?

The wettest months in Red Bluff, California, are March and December, with an average 3.27" (83mm) of rainfall.

How much does it rain in Red Bluff in December?

In Red Bluff, California, in December, during 12 rainfall days, 3.27" (83mm) of precipitation is typically accumulated.

When does it start snowing in Red Bluff?

December is the first month it typically snows in Red Bluff, California. Throughout December, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow.

What is the month with the shortest days in Red Bluff?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

What is the average length of the day in December in Red Bluff?

In December, the average day length in Red Bluff, California, is 9h and 22min.

What time are sunrise and sunset in December in Red Bluff?

In December, on the first day of the month, sunrise is at 7:12 am and sunset at 4:43 pm. On the last day of the month, in Red Bluff, California, sunrise is at 7:31 am and sunset at 4:53 pm PST.

What are the months with the least sunshine in Red Bluff?

The months with the least sunshine in Red Bluff, California, are January and December, with an average of 5.8h of sunshine.

How long on average sun shines in December in Red Bluff?

In December, the average sunshine duration in Red Bluff, California, is 5.8h.

When is the lowest UV index in Red Bluff?

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

How high is the UV index in December in Red Bluff?

In Red Bluff, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
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
Red Bluff, CA

Average temperature in December - Red Bluff, CA
  • Average high temperature in December: 52.7°F

The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in December: 39.6°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is December (39.6°F).

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Average pressure in December
Red Bluff, CA

Average pressure in December - Red Bluff, CA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, July and August (29.91"Hg).

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Average wind speed in December
Red Bluff, CA

Average wind speed in December - Red Bluff, CA
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is March (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
Red Bluff, CA

Average humidity in December - Red Bluff, CA
  • Average humidity in December: 68%

The month with the highest relative humidity is March (71%).
The months with the lowest relative humidity are July and August (31%).

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Average rainfall in December
Red Bluff, CA

Average rainfall in December - Red Bluff, CA
  • Average rainfall in December: 3.27"

The wettest months (with the highest rainfall) are March and December (3.27").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in December
Red Bluff, CA

Average rainfall days in December - Red Bluff, CA
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is March (14 days).
The month with the least rainy days is August (1.1 days).

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Average snowfall in December
Red Bluff, CA

Average snowfall in December - Red Bluff, CA
  • Average snowfall in December: 0.08"

The month with the highest snowfall is February (0.12").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Red Bluff, CA

Average snowfall days in December - Red Bluff, 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).

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Average daylight in December /
Average sunshine in December
Red Bluff, CA

Average daylight in December / Average sunshine in December - Red Bluff, 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 24min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).

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Average sunshine days in December
Red Bluff, CA

Average sunshine days in December - Red Bluff, CA
  • Average sunshine days in December: 17.9 days

The month with the most sunshine days is August (28.4 days).
The month with the least sunshine days is March (15.3 days).

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Average UV index in December
Red Bluff, CA

Average UV index in December - Red Bluff, 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).

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Average cloud cover in December
Red Bluff, CA

Average cloud cover in December - Red Bluff, CA
  • Average cloud cover in December: 36

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in December
Red Bluff, CA

Average visibility in December - Red Bluff, 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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Red Bluff, California, USA

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