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 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
December, with its average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 46.9°F (8.3°C), holds the record as the coldest month.Humidity
The average relative humidity in December is 53%.Rainfall
The month with the most rainfall is December, when the rain falls for 6.5 days and typically aggregates up to 1.89" (48mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:37 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:52 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.7h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 4 suggests these recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What are the temperatures in December?
What is the average humidity in December?
What is the rainiest month in Corona?
How many days does it rain in December?
What is the month with the shortest days in Corona?
How many hours of daylight does Corona have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Corona, CA
- Average high temperature in December: 63.5°F
The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (63.5°F).
- Average low temperature in December: 46.9°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).
Average pressure in December
Corona, 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 (29.87"Hg).
Average wind speed in December
Corona, CA
- Average wind speed in December: 4.9mph
The windiest months (with the highest average wind speed) are April and May (5.4mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in December
Corona, CA
- Average humidity in December: 53%
The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is November (48%).
Average rainfall in December
Corona, CA
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Corona, CA
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.3 days).
Average daylight in December /
Average sunshine in December
Corona, 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 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Corona, CA
- Average sunshine days in December: 23 days
The month with the most sunshine days is June (27.1 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in December
Corona, CA
- Average UV index in December: 4
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in December
Corona, CA
- Average cloud cover in December: 23
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Corona, 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).
Corona, California, USA
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