December weather forecast and climate
Junction City, CA

Weather in December

December, the first month of the winter, in Junction City, is also a frosty month, with average temperature fluctuating between 30°F (-1.1°C) and 45°F (7.2°C).

Temperature

December is the coldest month, with an average high-temperature of 45°F (7.2°C) and an average low-temperature of 30°F (-1.1°C).

Humidity

In December, the average relative humidity is 81%.

Rainfall

The month with the most rainfall in Junction City is December when the rain falls for 14.5 days and typically aggregates up to 6.14" (156mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Junction City, snow falls for 4.3 days, with typically accumulated 5.43" (138mm) of snow. In Junction City, during the entire year, snow falls for 21.6 days, and aggregates up to 28.46" (723mm) of snow.

Daylight

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

Sunshine

The month with the least sunshine is December, with an average of 4.6h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Junction City?

With an average high-temperature of 45°F (7.2°C) and an average low-temperature of 30°F (-1.1°C), December is the coldest month.

What is the temperature in December in Junction City?

In Junction City, California, in December, the average high-temperature is 45°F (7.2°C), and the average low-temperature is 30°F (-1.1°C).

What is the average humidity in December in Junction City?

In Junction City, the average relative humidity in December is 81%.

How much does it rain in Junction City in December?

In Junction City, in December, it is raining for 14.5 days, with typically 6.14" (156mm) of accumulated precipitation.

What is the rainiest month in Junction City?

December is the month with the most rainfall. Rain falls for 14.5 days and accumulates 6.14" (156mm) of precipitation.

How many days does it snow in December in Junction City?

In Junction City, during December, snow falls for 4.3 days and regularly aggregates up to 5.43" (138mm) of snow.

What is the month with the shortest days in Junction City?

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

How many hours of daylight does Junction City have in December?

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

What is the month with the least sunshine in Junction City?

December has the least sunshine of the year in Junction City, California, with an average of 4.6h of sunshine.

How many hours of sunshine does Junction City have in December?

In December, the average sunshine in Junction City is 4.6h.

When is the lowest UV index in Junction City?

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in December in Junction City?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.

Average temperature in December
Junction City, CA

Average temperature in December - Junction City, CA
  • Average high temperature in December: 45°F

The warmest months (with the highest average high temperature) are July and August (84.6°F).
The month with the lowest average high temperature is December (45°F).

  • Average low temperature in December: 30°F

The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is December (30°F).

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Average pressure in December
Junction City, CA

Average pressure in December - Junction City, CA
  • Average pressure in December: 30.12"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is August (29.94").

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Average wind speed in December
Junction City, CA

Average wind speed in December - Junction City, CA
  • Average wind speed in December: 4.2mph

The windiest months (with the highest average wind speed) are March and April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).

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Average humidity in December
Junction City, CA

Average humidity in December - Junction City, CA
  • Average humidity in December: 81%

The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is August (54%).

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Average rainfall in December
Junction City, CA

Average rainfall in December - Junction City, CA
  • Average rainfall in December: 6.14"

The wettest month (with the highest rainfall) is December (6.14").
The driest months (with the least rainfall) are July and August (0.16").

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Average rainfall days in December
Junction City, CA

Average rainfall days in December - Junction City, CA
  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is August (2.5 days).

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Average snowfall in December
Junction City, CA

Average snowfall in December - Junction City, CA
  • Average snowfall in December: 5.43"

The month with the highest snowfall is February (8.35").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Junction City, CA

Average snowfall days in December - Junction City, CA
  • Average snowfall days in December: 4.3 days

The month with the highest number of snowfall days is February (5.3 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Junction City, CA

Average daylight in December / Average sunshine in December - Junction City, 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: 4.6h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 4.6h).

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Average sunshine days in December
Junction City, CA

Average sunshine days in December - Junction City, CA
  • Average sunshine days in December: 13.3 days

The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is March (10.6 days).

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Average UV index in December
Junction City, CA

Average UV index in December - Junction City, 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 January, February, November and December (UV index 2).

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Average cloud cover in December
Junction City, CA

Average cloud cover in December - Junction City, CA
  • Average cloud cover in December: 52

The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in December
Junction City, CA

Average visibility in December - Junction City, CA
  • Average visibility in December: 4mi

Months with the highest visibility are June, July, August, September and October (6mi).
Months with the lowest visibility are March and December (4mi).

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