Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In December, the average high-temperature goes from a fresh 53.4°F (11.9°C) in November to a frosty 42.8°F (6°C). California, during the month of December, experiences an average low-temperature of 28.9°F (-1.7°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In California, in December, it is raining for 6.6 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, there are 142 rainfall days, and 32.13" (816mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In California, in December, during 4.1 snowfall days, 1.89" (48mm) of snow is typically accumulated. Throughout the year, there are 22.7 snowfall days, and 11.34" (288mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:09 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:59 pm CST.
Sunshine
In California, the average sunshine in December is 5.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, an average UV index of 2 transforms into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. When the Sun is at its strongest around midday, find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in California?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does California have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does California have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
California, MO
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
California, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
California, MO
- Average wind speed in December: 8.8mph
The windiest months (with the highest average wind speed) are January and March (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in December
California, MO
- Average humidity in December: 76%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
California, MO
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in December
California, MO
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is December (6.6 days).
Average snowfall in December
California, MO
- Average snowfall in December: 1.89"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
California, MO
- Average snowfall days in December: 4.1 days
The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
California, MO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
California, MO
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in December
California, MO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
California, MO
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
California, MO
- 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).
California, Missouri, USA
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