December weather forecastValley Wells, CA

December

Weather in December

The first month of the winter, December, is also a fresh month in Valley Wells, California, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 52°F (11.1°C).

Temperature

The coldest period is December, when temperatures fluctuate between an average high of 52°F (11.1°C) and a low of 37°F (2.8°C).

Humidity

The months with the highest humidity are January and December, with an average relative humidity of 47%.

Rainfall

In Valley Wells, in December, during 2.3 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. Throughout the year, there are 34.1 rainfall days, and 2.64" (67mm) of precipitation is accumulated.

Snowfall

In Valley Wells, snow does not fall in February through October and December.

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 6:41 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:46 pm PST.

Sunshine

The months with the least sunshine are January and December, with an average of 7.1h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 3 during December translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December is the coldest month, with the temperature often reaching an average high of 52°F (11.1°C) and an average low of 37°F (2.8°C).

The high-temperature in Valley Wells during December is 52°F (11.1°C) and the low-temperature is 37°F (2.8°C).

January and December, with an average relative humidity of 47%, are most humid months.

In Valley Wells, the average relative humidity in December is 47%.

In Valley Wells, in December, it is raining for 2.3 days, with typically 0.24" (6mm) of accumulated precipitation.

February through October and December are months without snowfall.

In December, it doesn't snow. November is the latest month when it typically snows.

The month with the shortest days is December, with an average of 9h and 48min of daylight.

In December, the average day length is 9h and 47min.

In December, on the first day of the month, sunrise is at 6:41 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:46 pm PST.

The months with the least sunshine are January and December, with an average of 7.1h of sunshine.

In Valley Wells, California, the average sunshine duration in December is 7.1h.

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

The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Valley Wells, CA

  • Average high temperature in December: 52°F

The warmest month (with the highest average high temperature) is July (95°F).
The month with the lowest average high temperature is December (52°F).

  • Average low temperature in December: 37°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is December (37°F).

Average pressure in December
Valley Wells, CA

  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

Average wind speed in December
Valley Wells, CA

  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is May (9.1mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).

Average humidity in December
Valley Wells, CA

  • Average humidity in December: 47%

The months with the highest relative humidity are January and December (47%).
The month with the lowest relative humidity is August (20%).

Average rainfall in December
Valley Wells, CA

  • Average rainfall in December: 0.24"

The wettest month (with the highest rainfall) is January (0.35").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in December
Valley Wells, CA

  • Average rainfall days in December: 2.3 days

The month with the highest number of rainy days is March (4.3 days).
The month with the least rainy days is June (1.3 days).

Average snowfall in December
Valley Wells, CA

  • Average snowfall in December: 0"

The month with the highest snowfall is November (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and December (0").

Average snowfall days in December
Valley Wells, CA

  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Valley Wells, CA

  • Average daylight in December: 9h and 48min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 7h and 6min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).

Average sunshine days in December
Valley Wells, CA

  • Average sunshine days in December: 28.1 days

The month with the most sunshine days is December (28.1 days).
The month with the least sunshine days is July (23.6 days).

Average UV index in December
Valley Wells, CA

  • Average UV index in December: 3

The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December
Valley Wells, CA

  • Average cloud cover in December: 17

The months with the most cloud cover are January, March and December (Cloud cover 17).
The months with the least cloud cover are June, August and September (Cloud cover 5).

Average visibility in December
Valley Wells, 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).