December weather forecast and climate
Old Station, CA

Weather in December

December, the first month of the winter, in Old Station, is also a wintry month, with average temperature ranging between min 24.8°F (-4°C) and max 39.4°F (4.1°C).

Temperature

With an average high-temperature of 39.4°F (4.1°C) and an average low-temperature of 24.8°F (-4°C), December is the coldest month.

Humidity

In Old Station, the average relative humidity is 79%.

Rainfall

In Old Station, California, during December, the rain falls for 8.3 days and regularly aggregates up to 4.21" (107mm) of precipitation. In Old Station, during the entire year, the rain falls for 83.9 days and collects up to 26.61" (676mm) of precipitation.

Snowfall

Months with snowfall in Old Station are January through June, September through December. In December, it is snowing for 11.2 days. Throughout December, 19.61" (498mm) of snow is accumulated. Throughout the year, there are 62.6 snowfall days, and 99.53" (2528mm) of snow is accumulated.

Daylight

The month with the shortest days in Old Station is December, with an average of 9.3h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 5.1h of sunshine.

UV index

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Old Station?

With an average high-temperature of 39.4°F (4.1°C) and an average low-temperature of 24.8°F (-4°C), December is the coldest month.

What is the temperature in December in Old Station?

In Old Station, in December, the average high-temperature is 39.4°F (4.1°C), and the average low-temperature is 24.8°F (-4°C).

What is the average humidity in December in Old Station?

In Old Station, California, the average relative humidity in December is 79%.

How much does it rain in Old Station in December?

In Old Station, California, in December, during 8.3 rainfall days, 4.21" (107mm) of precipitation is typically accumulated.

How much does it snow in Old Station in December?

In Old Station, in December, during 11.2 snowfall days, 19.61" (498mm) of snow is typically accumulated.

What is the month with the shortest days in Old Station?

The month with the shortest days in Old Station is December, with an average of 9.3h of daylight.

What is the average length of the day in December in Old Station?

The average length of the day in December is 9.3h.

What is the month with the least sunshine in Old Station?

With an average of 5.1h of sunshine, December has the least sunshine of the year in Old Station, California.

How long on average sun shines in December in Old Station?

In December, the average sunshine is 5.1h.

How high is the UV index in December in Old Station?

In Old Station, California, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to the Sun's UV rays.

Average temperature in December
Old Station, CA

Average temperature in December - Old Station, CA
  • Average high temperature in December: 39.4°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (39.4°F).

  • Average low temperature in December: 24.8°F

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).

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Average pressure in December
Old Station, CA

Average pressure in December - Old Station, CA
  • Average pressure in December: 30.16"

The month with the highest atmospheric pressure is January (30.18").
Months with the lowest atmospheric pressure are June and August (29.91").

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Average wind speed in December
Old Station, CA

Average wind speed in December - Old Station, CA
  • Average wind speed in December: 6.2mph

The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in December
Old Station, CA

Average humidity in December - Old Station, CA
  • Average humidity in December: 79%

The month with the highest relative humidity is March (83%).
Months with the lowest relative humidity are July and August (42%).

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Average rainfall in December
Old Station, CA

Average rainfall in December - Old Station, CA
  • Average rainfall in December: 4.21"

The wettest month (with the highest rainfall) is March (4.76").
The driest month (with the least rainfall) is August (0.31").

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Average rainfall days in December
Old Station, CA

Average rainfall days in December - Old Station, CA
  • Average rainfall days in December: 8.3 days

The month with the highest number of rainy days is April (11.2 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in December
Old Station, CA

Average snowfall in December - Old Station, CA
  • Average snowfall in December: 19.61"

Months with the highest snowfall are February and March (21.85").
Months with the least snowfall are July and August (0").

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Average snowfall days in December
Old Station, CA

Average snowfall days in December - Old Station, CA
  • Average snowfall days in December: 11.2 days

The month with the highest number of snowfall days is March (13.3 days).
Months with the least snowfall days are July and August (0 days).

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Average daylight in December /
Average sunshine in December
Old Station, CA

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

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 5.1h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.1h).

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Average sunshine days in December
Old Station, CA

Average sunshine days in December - Old Station, CA
  • Average sunshine days in December: 16 days

The month with the most sunshine days is August (26.6 days).
The month with the least sunshine days is March (12.1 days).

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Average UV index in December
Old Station, CA

Average UV index in December - Old Station, CA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are February and November (UV index 1).

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Average cloud cover in December
Old Station, CA

Average cloud cover in December - Old Station, CA
  • Average cloud cover in December: 46

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in December
Old Station, CA

Average visibility in December - Old Station, CA
  • Average visibility in December: 5mi

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).

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