December weather forecast
Hollister, CA

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Weather in December

December, the first month of the winter in Hollister, is still a refreshing month, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 57.4°F (14.1°C).

Temperature

Hollister experiences its lowest average temperatures in December, reaching a peak of 57.4°F (14.1°C) and a minimum of 40.3°F (4.6°C).

Humidity

The average relative humidity in December is 70%.

Rainfall

December is the month with the most rainfall in Hollister. Rain falls for 8.5 days and accumulates 1.57" (40mm) of precipitation.

Daylight

The month with the shortest days in Hollister is December, with an average of 9h and 42min of daylight.
On the first day of December in Hollister, sunrise is at 7:00 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:59 pm PST.

Sunshine

The month with the least sunshine in Hollister is December, with an average of 6.1h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum high UV index of 3 in December translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What is the coldest month in Hollister?

In Hollister, December registers the lowest temperatures, averaging 57.4°F (14.1°C) at the peak and 40.3°F (4.6°C) at the lowest.

What is the average December temperature in Hollister?

The high-temperature in Hollister during December is 57.4°F (14.1°C) and the low-temperature is 40.3°F (4.6°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in December in Hollister?

The average relative humidity in December in Hollister, California, is 70%.

What is the rainiest month in Hollister?

December is the month with the most rainfall. Rain falls for 8.5 days and accumulates 1.57" (40mm) of precipitation.

How much does it rain in Hollister in December?

In Hollister, California, in December, during 8.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.

What is the month with the shortest days in Hollister?

The month with the shortest days is December, with an average of 9h and 42min of daylight.

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

In December, the average day length in Hollister, California, is 9h and 41min.

What time are sunrise and sunset in December in Hollister?

On the first day of December, sunrise is at 7:00 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:59 pm PST.

What is the month with the least sunshine in Hollister?

With an average of 6.1h of sunshine, December has the least sunshine of the year in Hollister, California.

How long on average sun shines in December in Hollister?

In December, the average sunshine duration in Hollister, California, is 6.1h.

What are the months with the lowest UV index in Hollister?

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

What is the UV index intensity in December in Hollister?

The average daily maximum UV index in December in Hollister, California, is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe 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
Hollister, CA

Average temperature in December - Hollister, CA
  • Average high temperature in December: 57.4°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (57.4°F).

  • Average low temperature in December: 40.3°F

The month with the highest average low temperature is August (55.4°F).
The coldest months (with the lowest average low temperature) are March and December (40.3°F).

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Average pressure in December
Hollister, CA

Average pressure in December - Hollister, CA
  • Average pressure in December: 30.11"Hg

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

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Average wind speed in December
Hollister, CA

Average wind speed in December - Hollister, CA
  • Average wind speed in December: 3.9mph

The windiest month (with the highest average wind speed) is May (5.5mph).
The calmest month (with the lowest average wind speed) is November (3.7mph).

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Average humidity in December
Hollister, CA

Average humidity in December - Hollister, CA
  • Average humidity in December: 70%

The month with the highest relative humidity is March (73%).
The month with the lowest relative humidity is July (53%).

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Average rainfall in December
Hollister, CA

Average rainfall in December - Hollister, CA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is December (1.57").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Hollister, CA

Average rainfall days in December - Hollister, CA
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is March (11.6 days).
The month with the least rainy days is August (0.3 days).

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

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

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Average sunshine days in December
Hollister, CA

Average sunshine days in December - Hollister, CA
  • Average sunshine days in December: 21.1 days

The month with the most sunshine days is August (30.3 days).
The month with the least sunshine days is March (18.6 days).

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Average UV index in December
Hollister, CA

Average UV index in December - Hollister, CA
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Hollister, CA

Average cloud cover in December - Hollister, CA
  • Average cloud cover in December: 33

The month with the most cloud cover is March (Cloud cover 34).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in December
Hollister, CA

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

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