December weather forecast
Valley Ford, CA

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Weather in December

December, the first month of the winter in Valley Ford, is also a moderate month, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 55.4°F (13°C).

Temperature

Valley Ford's coldest temperatures are experienced in December, with average high temperatures of 55.4°F (13°C) and lows of 45.3°F (7.4°C).

Humidity

In December, the average relative humidity is 75%.

Rainfall

In Valley Ford, in December, during 12 rainfall days, 3.54" (90mm) of precipitation is typically accumulated. In Valley Ford, California, during the entire year, the rain falls for 83.1 days and collects up to 20" (508mm) of precipitation.

Daylight

December has the shortest days of the year in Valley Ford, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:10 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:01 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 5.7h 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 medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 3 in December leads to these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.

Frequently asked questions

What month is the coldest?

In Valley Ford, the average lowest temperatures are observed in December, with a high of 55.4°F (13°C) and a low of 45.3°F (7.4°C).

What are December temperatures?

An average high-temperature, in December, in Valley Ford, is 55.4°F (13°C) and the average low-temperature is 45.3°F (7.4°C).

What is the average humidity in December?

The average relative humidity in December in Valley Ford is 75%.

How many days does it rain in December?

In Valley Ford, in December, it is raining for 12 days, with typically 3.54" (90mm) of accumulated precipitation.

What is the month with the shortest days?

The month with the shortest days in Valley Ford is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Valley Ford have in December?

In Valley Ford, the average day length in December is 9h and 33min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:10 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:01 pm PST.

What is the month with the least sunshine?

With an average of 5.7h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December?

The average sunshine duration in December is 5.7h.

When is the lowest UV index in Valley Ford?

The months with the lowest UV index are January, February, November and December, 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 estimate of 3 to 5 represents a medium health risk from 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
Valley Ford, CA

Average temperature in December - Valley Ford, CA
  • Average high temperature in December: 55.4°F

The warmest month (with the highest average high temperature) is September (72.5°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in December: 45.3°F

The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).

Average pressure in December
Valley Ford, CA

Average pressure in December - Valley Ford, CA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.92"Hg).

Average wind speed in December
Valley Ford, CA

Average wind speed in December - Valley Ford, CA
  • Average wind speed in December: 7.1mph

The windiest month (with the highest average wind speed) is May (9.9mph).
The calmest month (with the lowest average wind speed) is November (6.7mph).

Average humidity in December
Valley Ford, CA

Average humidity in December - Valley Ford, CA
  • Average humidity in December: 75%

The month with the highest relative humidity is March (78%).
The months with the lowest relative humidity are September and October (71%).

Average rainfall in December
Valley Ford, CA

Average rainfall in December - Valley Ford, CA
  • Average rainfall in December: 3.54"

The wettest month (with the highest rainfall) is February (4.37").
The driest month (with the least rainfall) is August (0.04").

Average rainfall days in December
Valley Ford, CA

Average rainfall days in December - Valley Ford, CA
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is March (14.4 days).
The month with the least rainy days is August (1.1 days).

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

Average daylight in December / Average sunshine in December - Valley Ford, CA
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in December
Valley Ford, CA

Average sunshine days in December - Valley Ford, CA
  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (14.8 days).

Average UV index in December
Valley Ford, CA

Average UV index in December - Valley Ford, CA
  • Average UV index in December: 3

The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December
Valley Ford, CA

Average cloud cover in December - Valley Ford, CA
  • Average cloud cover in December: 37

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 12).

Average visibility in December
Valley Ford, CA

Average visibility in December - Valley Ford, 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).

Valley Ford, California, USA

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