December weather forecast
Apollo, CA

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Weather in December

The first month of the winter, December, is also a fresh month in Apollo, California, with an average temperature fluctuating between 54.3°F (12.4°C) and 38.7°F (3.7°C).

Temperature

December is the coldest month of the year, registering average temperatures as high as 54.3°F (12.4°C) and as low as 38.7°F (3.7°C).

Humidity

The months with the highest humidity in Apollo, California, are January and December, with an average relative humidity of 48%.

Rainfall

December is the month with the most rainfall. Rain falls for 5.6 days and accumulates 0.55" (14mm) of precipitation.

Snowfall

February through October and December are months without snowfall in Apollo.

Daylight

The month with the shortest days in Apollo is December, with an average of 9h and 48min of daylight.
On the first day of December in Apollo, sunrise is at 6:38 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:45 pm PST.

Sunshine

In Apollo, the average sunshine in December is 7.2h.

UV index

November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The UV index of 3 in December translates into these instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What is the coldest time of year in Apollo?

In Apollo, December is the month with the lowest recorded average temperatures, measuring a high of 54.3°F (12.4°C) and a low of 38.7°F (3.7°C).

What are December temperatures in Apollo?

December temperatures vary between a high-temperature of 54.3°F (12.4°C) and a low-temperature of 38.7°F (3.7°C).

What are the most humid months in Apollo?

The months with the highest humidity in Apollo, California, are January and December, with an average relative humidity of 48%.

What is the average humidity in December in Apollo?

In Apollo, the average relative humidity in December is 48%.

What is the rainiest month in Apollo?

The month with the most rainfall in Apollo, California, is December, when the rain falls for 5.6 days and typically aggregates up to 0.55" (14mm) of precipitation.

How much does it rain in Apollo in December?

In December, in Apollo, California, the rain falls for 5.6 days. Throughout December, 0.55" (14mm) of precipitation is accumulated.

When it does not snow in Apollo?

In Apollo, California, snow does not fall in February through October and December.

Does it snow in Apollo in December?

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

What is the month with the shortest days in Apollo?

December has the shortest days of the year in Apollo, with an average of 9h and 48min of daylight.

What is the average length of the day in December in Apollo?

In December, the average day length in Apollo, California, is 9h and 49min.

When are sunrise and sunset in December in Apollo?

On the first day of December in Apollo, sunrise is at 6:38 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:45 pm PST.

How many hours of sunshine does Apollo have in December?

In December, the average sunshine duration in Apollo is 7.2h.

What is the month with the lowest UV index in Apollo?

November and December, with an average maximum UV index of 3, are months with the lowest UV index in Apollo, California.

What is the UV index intensity in December in Apollo?

In Apollo, California, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Apollo, CA

Average temperature in December - Apollo, CA
  • Average high temperature in December: 54.3°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (54.3°F).

  • Average low temperature in December: 38.7°F

The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is December (38.7°F).

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Average pressure in December
Apollo, CA

Average pressure in December - Apollo, CA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).

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Average wind speed in December
Apollo, CA

Average wind speed in December - Apollo, CA
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is May (12.6mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

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Average humidity in December
Apollo, CA

Average humidity in December - Apollo, CA
  • Average humidity in December: 48%

The months with the highest relative humidity are January and December (48%).
The month with the lowest relative humidity is August (23%).

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Average rainfall in December
Apollo, CA

Average rainfall in December - Apollo, CA
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is December (0.55").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in December
Apollo, CA

Average rainfall days in December - Apollo, CA
  • Average rainfall days in December: 5.6 days

The month with the highest number of rainy days is December (5.6 days).
The month with the least rainy days is June (0.2 days).

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Average snowfall in December
Apollo, CA

Average snowfall in December - Apollo, CA
  • Average snowfall in December: 0"

The month with the highest snowfall is November (0.39").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and December (0").

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Average snowfall days in December
Apollo, CA

Average snowfall days in December - Apollo, CA
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Apollo, CA

Average daylight in December / Average sunshine in December - Apollo, CA
  • Average daylight in December: 9h and 5min

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

  • Average sunshine in December: 7h and 1min

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

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Average sunshine days in December
Apollo, CA

Average sunshine days in December - Apollo, CA
  • Average sunshine days in December: 24.8 days

The month with the most sunshine days is June (29.8 days).
The month with the least sunshine days is February (22.8 days).

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Average UV index in December
Apollo, CA

Average UV index in December - Apollo, 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 November and December (UV index 3).

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Average cloud cover in December
Apollo, CA

Average cloud cover in December - Apollo, CA
  • Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The months with the least cloud cover are June, August and September (Cloud cover 5).

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Average visibility in December
Apollo, CA

Average visibility in December - Apollo, 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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Apollo, California, USA

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