December weather forecast
Olema, CA

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Weather in December

December, the first month of the winter in Olema, is still a refreshing month, with an average temperature fluctuating between 46.8°F (8.2°C) and 55.4°F (13°C).

Temperature

December, noted for its average high-temperature of 55.4°F (13°C) and an average low-temperature of 46.8°F (8.2°C), is considered the coldest month.

Humidity

In Olema, California, the average relative humidity in December is 75%.

Rainfall

In Olema, California, in December, during 7.7 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, in Olema, there are 55.1 rainfall days, and 4.65" (118mm) of precipitation is accumulated.

Daylight

December has the shortest days of the year in Olema, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:51 pm. On the last day of December, in Olema, California, sunrise is at 7:27 am and sunset at 5:01 pm PST.

Sunshine

The month with the least sunshine is December, with an average of 5.6h of sunshine.

UV index

The months with the lowest UV index in Olema are February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, a regular UV index of 3 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What is the coldest time of year in Olema?

The month of December sees the average lowest temperatures in Olema, reaching 55.4°F (13°C) at the peak and 46.8°F (8.2°C) at the low.

What are the temperatures in Olema in December?

In December, the average high-temperature and low-temperature in Olema are 55.4°F (13°C) and 46.8°F (8.2°C) respectively.

What is the average humidity in December in Olema?

In December, the average relative humidity in Olema is 75%.

How many days does it rain in December in Olema?

In Olema, in December, it is raining for 7.7 days, with typically 0.83" (21mm) of accumulated precipitation.

What is the month with the shortest days in Olema?

December has the shortest days of the year in Olema, with an average of 9h and 36min of daylight.

How many hours of daylight does Olema have in December?

In Olema, California, the average day length in December is 9h and 35min.

When are sunrise and sunset in December in Olema?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:01 pm PST.

What is the month with the least sunshine in Olema?

With an average of 5.6h of sunshine, December has the least sunshine of the year in Olema.

How many hours of sunshine does Olema have in December?

The average sunshine duration in December in Olema, California, is 5.6h.

When is the lowest UV index in Olema?

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

What is the UV index intensity in December in Olema?

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Olema, CA

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

The warmest month (with the highest average high temperature) is September (69.4°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in December: 46.8°F

The month with the highest average low temperature is September (56.3°F).
The coldest month (with the lowest average low temperature) is December (46.8°F).

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Average pressure in December
Olema, CA

Average pressure in December - Olema, 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).

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Average wind speed in December
Olema, CA

Average wind speed in December - Olema, CA
  • Average wind speed in December: 7.5mph

The windiest months (with the highest average wind speed) are April and May (10mph).
The calmest month (with the lowest average wind speed) is November (6.9mph).

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Average humidity in December
Olema, CA

Average humidity in December - Olema, CA
  • Average humidity in December: 75%

The months with the highest relative humidity are July and August (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Olema, CA

Average rainfall in December - Olema, CA
  • Average rainfall in December: 0.83"

The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Olema, CA

Average rainfall days in December - Olema, CA
  • Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is March (9.4 days).
The month with the least rainy days is June (1.5 days).

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

Average daylight in December / Average sunshine in December - Olema, CA
  • Average daylight in December: 9h and 4min

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 36min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in December
Olema, CA

Average sunshine days in December - Olema, CA
  • Average sunshine days in December: 21.8 days

The months with the most sunshine days are June and October (25.9 days).
The month with the least sunshine days is March (19.8 days).

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Average UV index in December
Olema, CA

Average UV index in December - Olema, 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 February and December (UV index 3).

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Average cloud cover in December
Olema, CA

Average cloud cover in December - Olema, CA
  • Average cloud cover in December: 37

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 16).

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Average visibility in December
Olema, CA

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

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