December weather forecast
Muscoy, CA

Share

Weather in December

The first month of the winter, December, is still a refreshing month in Muscoy, California, with an average temperature varying between 59.9°F (15.5°C) and 43.5°F (6.4°C).

Temperature

In Muscoy, December is the coldest month, with temperatures averaging a high of 59.9°F (15.5°C) and a low of 43.5°F (6.4°C).

Humidity

In December, the average relative humidity is 51%.

Rainfall

The wettest months are February and December, with an average 1.14" (29mm) of rainfall.

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 6:37 am and sunset at 4:39 pm. On the last day of December, sunrise is at 6:55 am and sunset at 4:50 pm PST.

Sunshine

The month with the least sunshine is December, with an average of 6.9h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Take precautions - Protection against sunburn is recommended. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

December tends to be the coldest month, with temperatures averaging a daily high of 59.9°F (15.5°C) and a low of 43.5°F (6.4°C).

What are the temperatures in December?

The average high-temperature and low-temperature during December are 59.9°F (15.5°C) and 43.5°F (6.4°C) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 51%.

What is the wettest month?

The months with the most rainfall in Muscoy are February and December, with an average 1.14" (29mm) of precipitation.

How many days does it rain in December in Muscoy?

In Muscoy, in December, during 5.5 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

When it does not snow in Muscoy?

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

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 54min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 55min.

When are sunrise and sunset in December?

On the first day of December in Muscoy, sunrise is at 6:37 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:50 pm PST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 6.9h of sunshine.

How long on average sun shines in December?

In Muscoy, the average sunshine duration in December is 6.9h.

When is the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to 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
Muscoy, CA

Average temperature in December - Muscoy, CA
  • Average high temperature in December: 59.9°F

The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).

  • Average low temperature in December: 43.5°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).

Average pressure in December
Muscoy, CA

Average pressure in December - Muscoy, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
Muscoy, CA

Average wind speed in December - Muscoy, CA
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

Average humidity in December
Muscoy, CA

Average humidity in December - Muscoy, CA
  • Average humidity in December: 51%

The months with the highest relative humidity are February and March (52%).
The month with the lowest relative humidity is August (38%).

Average rainfall in December
Muscoy, CA

Average rainfall in December - Muscoy, CA
  • Average rainfall in December: 1.14"

The wettest months (with the highest rainfall) are February and December (1.14").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in December
Muscoy, CA

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

The month with the highest number of rainy days is December (5.5 days).
The month with the least rainy days is June (1.3 days).

Average snowfall days in December
Muscoy, CA

Average snowfall days in December - Muscoy, 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
Muscoy, CA

Average daylight in December / Average sunshine in December - Muscoy, 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 December (Average sunshine: 6h and 54min).

Average sunshine days in December
Muscoy, CA

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

The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (22.6 days).

Average UV index in December
Muscoy, CA

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

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Muscoy, CA

Average cloud cover in December - Muscoy, CA
  • Average cloud cover in December: 21

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in December
Muscoy, CA

Average visibility in December - Muscoy, 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).

Muscoy, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location