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
Daly City's December weather, marked by an average high temperature of 55.4°F (13°C) and an average low temperature of 47.8°F (8.8°C), is the coldest in the year.Humidity
In December, the average relative humidity is 72%.Rainfall
In Daly City, California, during December, the rain falls for 11.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Daly City, during the entire year, the rain falls for 82.2 days and collects up to 13.62" (346mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:01 pm PST.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year.UV index
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 3 in December, converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What is the temperature in December?
What is the average humidity in December?
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?
How long on average sun shines in December in Daly City?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Daly City, CA
- Average high temperature in December: 55.4°F
The warmest month (with the highest average high temperature) is September (69.1°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in December: 47.8°F
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is February (47.7°F).
Average pressure in December
Daly City, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.92"Hg).
Average wind speed in December
Daly City, CA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in December
Daly City, CA
- Average humidity in December: 72%
The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Daly City, CA
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is February (2.8").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in December
Daly City, CA
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (2.7 days).
Average daylight in December /
Average sunshine in December
Daly City, CA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Daly City, CA
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (16.6 days).
Average UV index in December
Daly City, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
Daly City, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 18).
Average visibility in December
Daly City, 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).
Daly City, California, USA
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