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
As November transitions to December, the average high-temperature falls from a fresh 51.3°F (10.7°C) to an icy 41.9°F (5.5°C). California encounters a steady low-temperature average of 30.6°F (-0.8°C) throughout the month of December.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 81%.Rainfall
In California, during December, the rain falls for 10.4 days and regularly aggregates up to 2.2" (56mm) of precipitation. In California, during the entire year, the rain falls for 150.9 days and collects up to 27.64" (702mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In California, in December, snow falls for 4.5 days, with typically accumulated 1.3" (33mm) of snow. In California, during the entire year, snow falls for 20.7 days and aggregates up to 6.85" (174mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:38 am and sunset at 5:15 pm. On the last day of December, sunrise is at 7:56 am and sunset at 5:25 pm EST.
Sunshine
In California, the average sunshine in December is 4.1h.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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 in December translates into these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the most humid month?
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?
When are sunrise and sunset in December in California?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
California, OH
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 30.6°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in December
California, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
California, OH
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
California, OH
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in December
California, OH
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
California, OH
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in December
California, OH
- Average snowfall in December: 1.3"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
California, OH
- Average snowfall days in December: 4.5 days
The months with the highest number of snowfall days are January and February (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
California, OH
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
California, OH
- Average sunshine days in December: 16.1 days
The months with the most sunshine days are October and November (19.2 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in December
California, OH
- Average UV index in December: 2
The months with the highest UV index are May, 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, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
California, OH
- 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, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location