December weather forecast and climate
Moreno Valley, CA

Marina on Lake Perris State Park in Moreno Valley, California, with visible piers, luxury boats, and high hills
Marina on Lake Perris State Park in Moreno Valley, California, with visible piers, luxury boats, and high hills

Weather in December

December, the first month of the winter, in Moreno Valley, is also an enjoyable month, with average temperature ranging between max 60.8°F (16°C) and min 43.5°F (6.4°C).

Temperature

With an average high-temperature of 60.8°F (16°C) and an average low-temperature of 43.5°F (6.4°C), December is the coldest month.

Humidity

In Moreno Valley, California, the average relative humidity is 53%.

Rainfall

In Moreno Valley, California, during December, the rain falls for 6.3 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 52.6 rainfall days, and 7.52" (191mm) of precipitation is accumulated.

Snowfall

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

Daylight

December has the shortest days of the year, with an average of 9.9h of daylight.

Sunshine

December has the least sunshine of the year in Moreno Valley, California, with an average of 6.8h of sunshine.

UV index

Months with the lowest UV index in Moreno Valley are November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 3 in December transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the coldest month in Moreno Valley?

The coldest month in Moreno Valley is December, with an average high-temperature of 60.8°F (16°C) and an average low-temperature of 43.5°F (6.4°C).

What is the temperature in December in Moreno Valley?

In December, in Moreno Valley, California, the average high-temperature is 60.8°F (16°C), and the average low-temperature is 43.5°F (6.4°C).

What is the average humidity in December in Moreno Valley?

The average relative humidity in December in Moreno Valley, California, is 53%.

How many days does it rain in December in Moreno Valley?

In December, the rain falls for 6.3 days. Throughout December, 1.57" (40mm) of precipitation is accumulated.

When it does not snow in Moreno Valley?

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

What is the month with the shortest days in Moreno Valley?

December has the shortest days of the year in Moreno Valley, with an average of 9.9h of daylight.

What is the average length of the day in December in Moreno Valley?

The average length of the day in December in Moreno Valley is 9.9h.

What is the month with the least sunshine in Moreno Valley?

The month with the least sunshine in Moreno Valley, California, is December, with an average of 6.8h of sunshine.

How many hours of sunshine does Moreno Valley have in December?

In Moreno Valley, California, the average sunshine in December is 6.8h.

What are the months with the lowest UV index in Moreno Valley?

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

What is the UV index reading in December in Moreno Valley?

In December, the average daily maximum UV index in Moreno Valley, California, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in December
Moreno Valley, CA

Average temperature in December - Moreno Valley, CA
  • Average high temperature in December: 60.8°F

The warmest month (with the highest average high temperature) is August (90.7°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in December: 43.5°F

The month with the highest average low temperature is August (64.8°F).
The coldest months (with the lowest average low temperature) are February and December (43.5°F).

[Resources]

Average pressure in December
Moreno Valley, CA

Average pressure in December - Moreno Valley, CA
  • Average pressure in December: 30.07"

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

[Resources]

Average wind speed in December
Moreno Valley, CA

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

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

[Resources]

Average humidity in December
Moreno Valley, CA

Average humidity in December - Moreno Valley, CA
  • Average humidity in December: 53%

Months with the highest relative humidity are February and May (56%).
The month with the lowest relative humidity is August (42%).

[Resources]

Average rainfall in December
Moreno Valley, CA

Average rainfall in December - Moreno Valley, CA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is February (1.61").
The driest month (with the least rainfall) is June (0.04").

[Resources]

Average rainfall days in December
Moreno Valley, CA

Average rainfall days in December - Moreno Valley, CA
  • Average rainfall days in December: 6.3 days

The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1.3 days).

[Resources]

Average snowfall in December
Moreno Valley, CA

Average snowfall in December - Moreno Valley, CA
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.04").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

[Resources]

Average snowfall days in December
Moreno Valley, CA

Average snowfall days in December - Moreno Valley, CA
  • Average snowfall days in December: 0 days

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

[Resources]

Average daylight in December /
Average sunshine in December
Moreno Valley, CA

Average daylight in December / Average sunshine in December - Moreno Valley, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.8h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.8h).

[Resources]

Average sunshine days in December
Moreno Valley, CA

Average sunshine days in December - Moreno Valley, CA
  • Average sunshine days in December: 23.5 days

The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (20.3 days).

[Resources]

Average UV index in December
Moreno Valley, CA

Average UV index in December - Moreno Valley, CA
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are November and December (UV index 3).

[Resources]

Average cloud cover in December
Moreno Valley, CA

Average cloud cover in December - Moreno Valley, 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).

[Resources]

Average visibility in December
Moreno Valley, CA

Average visibility in December - Moreno Valley, CA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]