December weather forecast
Piru, CA

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Weather in December

December, the first month of the winter in Piru, is also a moderate month, with an average temperature fluctuating between 59.2°F (15.1°C) and 43.5°F (6.4°C).

Temperature

Piru records the coldest temperatures in December, averaging a high of 59.2°F (15.1°C) and a low of 43.5°F (6.4°C).

Humidity

In Piru, the average relative humidity in December is 54%.

Rainfall

In December, the rain falls for 5.9 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 52.1 rainfall days, and 9.02" (229mm) of precipitation is accumulated.

Snowfall

January, February, April through December are months without snowfall.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:44 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:01 am and sunset at 4:55 pm PST.

Sunshine

In December, the average sunshine is 6.8h.

UV index

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 unsafe exposure to UV radiation for the ordinary person.
Note: In December, the maximum UV index of 3 suggests these recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. To protect against the Sun's most potent rays, avoid direct exposure around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Piru notes the coldest temperatures in December, with a average high of 59.2°F (15.1°C) and a low of 43.5°F (6.4°C).

What is the usual temperature for Piru in December?

The average high-temperature and low-temperature during December are 59.2°F (15.1°C) and 43.5°F (6.4°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 82.4°F (28°C).

What is the average humidity in December in Piru?

In Piru, the average relative humidity in December is 54%.

How many days does it rain in December in Piru?

In Piru, in December, it is raining for 5.9 days, with typically 1.57" (40mm) of accumulated precipitation.

When it does not snow?

January, February, April through December are months without snowfall.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

How many hours of daylight does Piru have in December?

In Piru, the average day length in December is 9h and 54min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:44 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 4:55 pm PST.

How many hours of sunshine does Piru have in December?

In Piru, the average sunshine duration in December is 6.8h.

When is the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
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
Piru, CA

Average temperature in December - Piru, CA
  • Average high temperature in December: 59.2°F

The warmest month (with the highest average high temperature) is August (84.2°F).
The month with the lowest average high temperature is December (59.2°F).

  • Average low temperature in December: 43.5°F

The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).

Average pressure in December
Piru, CA

Average pressure in December - Piru, 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 (29.89"Hg).

Average wind speed in December
Piru, CA

Average wind speed in December - Piru, CA
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is December (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

Average humidity in December
Piru, CA

Average humidity in December - Piru, CA
  • Average humidity in December: 54%

The month with the highest relative humidity is March (60%).
The months with the lowest relative humidity are October and November (47%).

Average rainfall in December
Piru, CA

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

The wettest month (with the highest rainfall) is February (1.85").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in December
Piru, CA

Average rainfall days in December - Piru, CA
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is March (8.3 days).
The months with the least rainy days are June and August (1.2 days).

Average snowfall days in December
Piru, CA

Average snowfall days in December - Piru, CA
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is March (0.1 days).
The months with the least snowfall days are January, February, April, May, June, July, August, September, October, November and December (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in December
Piru, CA

Average sunshine days in December - Piru, CA
  • Average sunshine days in December: 23.6 days

The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (21 days).

Average UV index in December
Piru, CA

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

Average cloud cover in December
Piru, CA

Average cloud cover in December - Piru, CA
  • Average cloud cover in December: 23

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in December
Piru, CA

Average visibility in December - Piru, 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).

Piru, California, USA

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