December weather forecastInca, CA

December

Weather in December

The first month of the winter, December, is still a refreshing month in Inca, California, with an average temperature ranging between min 48.2°F (9°C) and max 62.8°F (17.1°C).

Temperature

Inca's December weather, marked by an average high temperature of 62.8°F (17.1°C) and an average low temperature of 48.2°F (9°C), is the coldest in the year.

Humidity

January and December, with an average relative humidity of 38%, are the most humid months in Inca.

Rainfall

In Inca, during December, the rain falls for 2.7 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, in Inca, there are 34.2 rainfall days, and 2.99" (76mm) of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of December in Inca, sunrise is at 6:26 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 4:41 pm PST.

Sunshine

The months with the least sunshine in Inca are January and December, with an average of 7.2h of sunshine.

UV index

With an average maximum UV index of 3, December is the month 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 the average person.
Note: In December, the maximum UV index of 3 transforms into these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During the coldest month in Inca, December, temperatures average a high of 62.8°F (17.1°C) and a low of 48.2°F (9°C).

An average high-temperature, in December, in Inca, is 62.8°F (17.1°C) and the average low-temperature is 48.2°F (9°C).

The months with the highest humidity in Inca, California, are January and December, with an average relative humidity of 38%.

In December, the average relative humidity in Inca is 38%.

In December, the rain falls for 2.7 days. Throughout December, 0.24" (6mm) of precipitation is accumulated.

December has the shortest days of the year in Inca, with an average of 10h and 0min of daylight.

In December, the average day length in Inca is 9h and 57min.

On the first day of December in Inca, California, sunrise is at 6:26 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 4:41 pm PST.

The months with the least sunshine are January and December, with an average of 7.2h of sunshine.

The average sunshine duration in December in Inca is 7.2h.

The month with the lowest UV index is December, with an average maximum UV index of 3.

The average daily maximum UV index in December in Inca, California, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Inca, CA

  • Average high temperature in December: 62.8°F

The warmest month (with the highest average high temperature) is July (105.1°F).
The month with the lowest average high temperature is December (62.8°F).

  • Average low temperature in December: 48.2°F

The month with the highest average low temperature is August (86.2°F).
The coldest month (with the lowest average low temperature) is December (48.2°F).

Average pressure in December
Inca, CA

  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

Average wind speed in December
Inca, CA

  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is November (6.4mph).

Average humidity in December
Inca, CA

  • Average humidity in December: 38%

The months with the highest relative humidity are January and December (38%).
The month with the lowest relative humidity is June (18%).

Average rainfall in December
Inca, CA

  • Average rainfall in December: 0.24"

The wettest month (with the highest rainfall) is July (0.55").
The driest months (with the least rainfall) are May and June (0.04").

Average rainfall days in December
Inca, CA

  • Average rainfall days in December: 2.7 days

The month with the highest number of rainy days is July (7.3 days).
The month with the least rainy days is May (1.2 days).

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

  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 7h and 12min

The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 12min).

Average sunshine days in December
Inca, CA

  • Average sunshine days in December: 27.6 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (19.1 days).

Average UV index in December
Inca, CA

  • Average UV index in December: 3

The months with the highest UV index are July and August (UV index 9).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Inca, CA

  • Average cloud cover in December: 17

The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in December
Inca, 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).