December weather forecast
Patterson, CA

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Weather in December

December, the first month of the winter in Patterson, is still a mild month, with an average temperature varying between 55.4°F (13°C) and 41°F (5°C).

Temperature

In Patterson, December is the coldest month, with temperatures averaging a high of 55.4°F (13°C) and a low of 41°F (5°C).

Humidity

In December, the average relative humidity in Patterson, California, is 71%.

Rainfall

The wettest months are March and December, with an average 0.47" (12mm) of rainfall.

Daylight

December has the shortest days of the year in Patterson, with an average of 9h and 36min of daylight.
On the first day of December in Patterson, sunrise is at 7:01 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:56 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6h of sunshine.

UV index

The months with the lowest UV index in Patterson, California, are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 3 during December morphs into the following directions:
Act with care - The need to guard against sun damage is communicated. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

What is the coldest time of year in Patterson?

December is the month when Patterson experiences its coldest temperatures, averaging a high of 55.4°F (13°C) and a low of 41°F (5°C).

What are the temperatures in Patterson in December?

An average high-temperature, in December, in Patterson, is 55.4°F (13°C) and the average low-temperature is 41°F (5°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 91.4°F (33°C).

What is the average humidity in December in Patterson?

In Patterson, California, the average relative humidity in December is 71%.

What is the rainiest month in Patterson?

The wettest months in Patterson, California, are March and December, with an average 0.47" (12mm) of rainfall.

How much does it rain in Patterson in December?

In Patterson, during December, the rain falls for 6.9 days and regularly aggregates up to 0.47" (12mm) of precipitation.

What is the month with the shortest days in Patterson?

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

How many hours of daylight does Patterson have in December?

In December, the average day length is 9h and 38min.

What time are sunrise and sunset in December in Patterson?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:56 pm PST.

What is the month with the least sunshine in Patterson?

With an average of 6h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December in Patterson?

In December, the average sunshine duration in Patterson is 6h.

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

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

What is the UV index intensity in December in Patterson?

The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average low temperature
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Patterson, CA

Average temperature in December - Patterson, CA
  • Average high temperature in December: 55.4°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 (55.4°F).

  • Average low temperature in December: 41°F

The months with the highest average low temperature are July and August (60.8°F).
The coldest months (with the lowest average low temperature) are January and December (41°F).

Average pressure in December
Patterson, CA

Average pressure in December - Patterson, CA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Patterson, CA

Average wind speed in December - Patterson, CA
  • Average wind speed in December: 5.5mph

The windiest month (with the highest average wind speed) is June (6.7mph).
The calmest months (with the lowest average wind speed) are January and November (5.1mph).

Average humidity in December
Patterson, CA

Average humidity in December - Patterson, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (39%).

Average rainfall in December
Patterson, CA

Average rainfall in December - Patterson, CA
  • Average rainfall in December: 0.47"

The wettest months (with the highest rainfall) are March and December (0.47").
The driest months (with the least rainfall) are June and August (0.04").

Average rainfall days in December
Patterson, CA

Average rainfall days in December - Patterson, CA
  • Average rainfall days in December: 6.9 days

The month with the highest number of rainy days is March (8.5 days).
The month with the least rainy days is June (1 days).

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

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

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

  • Average sunshine in December: 6h and 0min

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 0min).

Average sunshine days in December
Patterson, CA

Average sunshine days in December - Patterson, CA
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (20.9 days).

Average UV index in December
Patterson, CA

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

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December
Patterson, CA

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

The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in December
Patterson, CA

Average visibility in December - Patterson, 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).

Patterson, California, USA

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