December weather forecast
Rincon, CA

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Weather in December

The first month of the winter, December, is still a comfortable month in Rincon, California, with an average temperature ranging between max 62.4°F (16.9°C) and min 45.1°F (7.3°C).

Temperature

Rincon's temperature records reveal December as the coldest month, marked by average highs of 62.4°F (16.9°C) and lows of 45.1°F (7.3°C).

Humidity

In Rincon, the average relative humidity in December is 58%.

Rainfall

In December, the rain falls for 5.5 days. Throughout December, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Rincon, there are 51.6 rainfall days, and 5.59" (142mm) of precipitation is accumulated.

Snowfall

In Rincon, California, snow does not fall in January, March through December.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 6:34 am and sunset at 4:40 pm. On the last day of December, sunrise is at 6:51 am and sunset at 4:51 pm PST.

Sunshine

With an average of 6.7h of sunshine, December has the least sunshine of the year.

UV index

December is the month with the lowest UV index in Rincon, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 3 during December translates into the following directions:
Guard yourself - Precautionary measures against sun damage are advocated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Rincon?

December, with its average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 45.1°F (7.3°C), holds the record as the coldest month in Rincon, California.

What are the temperatures in Rincon in December?

December temperatures in Rincon, California, vary between a high-temperature of 62.4°F (16.9°C) and a low-temperature of 45.1°F (7.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in September is computed to be 87.8°F (31°C).

What is the average humidity in December in Rincon?

In Rincon, California, the average relative humidity in December is 58%.

How many days does it rain in December in Rincon?

In December, the rain falls for 5.5 days. Throughout December, 0.79" (20mm) of precipitation is accumulated.

When it does not snow in Rincon?

In Rincon, California, snow does not fall in January, March through December.

What is the month with the shortest days in Rincon?

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

How many hours of daylight does Rincon have in December?

The average day length in December in Rincon, California, is 9h and 59min.

When are sunrise and sunset in December in Rincon?

On the first day of December in Rincon, sunrise is at 6:34 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:51 pm PST.

What is the month with the least sunshine in Rincon?

With an average of 6.7h of sunshine, December has the least sunshine of the year in Rincon, California.

How many hours of sunshine does Rincon have in December?

The average sunshine duration in December in Rincon is 6.7h.

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

With an average maximum UV index of 3, December is the month with the lowest UV index in Rincon.

What is the UV index reading in December in Rincon?

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

Average temperature in December - Rincon, CA
  • Average high temperature in December: 62.4°F

The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in December: 45.1°F

The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is February (44.6°F).

Average pressure in December
Rincon, CA

Average pressure in December - Rincon, CA
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in December
Rincon, CA

Average wind speed in December - Rincon, CA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is April (5.3mph).
The calmest month (with the lowest average wind speed) is September (4.2mph).

Average humidity in December
Rincon, CA

Average humidity in December - Rincon, CA
  • Average humidity in December: 58%

The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is November (52%).

Average rainfall in December
Rincon, CA

Average rainfall in December - Rincon, CA
  • Average rainfall in December: 0.79"

The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in December
Rincon, CA

Average rainfall days in December - Rincon, CA
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.3 days).

Average snowfall days in December
Rincon, CA

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

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

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

Average daylight in December / Average sunshine in December - Rincon, CA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 4min

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 42min).

Average sunshine days in December
Rincon, CA

Average sunshine days in December - Rincon, CA
  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (21.5 days).

Average UV index in December
Rincon, CA

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

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Rincon, CA

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

The month with the most cloud cover is March (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 6).

Average visibility in December
Rincon, CA

Average visibility in December - Rincon, 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).

Rincon, California, USA

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