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, noted for its average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 52.2°F (11.2°C), is considered the coldest month.Humidity
In December, the average relative humidity is 58%.Rainfall
The month with the most rainfall is December, when the rain falls for 5.5 days and typically aggregates up to 0.71" (18mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:39 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:53 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 reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 4 during December, leads to the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
What is the temperature in December?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine in Garden Grove?
How many hours of sunshine does Garden Grove have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Garden Grove, CA
- Average high temperature in December: 63.5°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (63.5°F).
- Average low temperature in December: 52.2°F
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (51.4°F).
Average pressure in December
Garden Grove, CA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in December
Garden Grove, CA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is September (4.9mph).
Average humidity in December
Garden Grove, CA
- Average humidity in December: 58%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (54%).
Average rainfall in December
Garden Grove, CA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is December (0.71").
The driest month (with the least rainfall) is June (0").
Average rainfall days in December
Garden Grove, CA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (0.9 days).
Average daylight in December /
Average sunshine in December
Garden Grove, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Garden Grove, CA
- Average sunshine days in December: 23.7 days
The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (22.1 days).
Average UV index in December
Garden Grove, CA
- Average UV index in December: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in December
Garden Grove, 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 6).
Average visibility in December
Garden Grove, 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).
Garden Grove, California, USA
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