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
In Trabuco Highlands, December is the coldest month, with temperatures averaging a high of 63°F (17.2°C) and a low of 49.8°F (9.9°C).Humidity
The average relative humidity in December in Trabuco Highlands is 60%.Rainfall
December is the month with the most rainfall in Trabuco Highlands. Rain falls for 6.7 days and accumulates 1.02" (26mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:37 am and sunset at 4:41 pm. On the last day of December, in Trabuco Highlands, sunrise is at 6:54 am and sunset at 4:52 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.6h of sunshine.UV index
The months with the lowest UV index in Trabuco Highlands are January through March, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 4 in December transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To protect against the Sun's most potent rays, avoid direct exposure around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Trabuco Highlands?
What is the temperature in December in Trabuco Highlands?
What is the average humidity in December in Trabuco Highlands?
What is the rainiest month in Trabuco Highlands?
How many days does it rain in December in Trabuco Highlands?
What is the month with the shortest days in Trabuco Highlands?
What is the average length of the day in December in Trabuco Highlands?
When are sunrise and sunset in December in Trabuco Highlands?
What is the month with the least sunshine in Trabuco Highlands?
How long on average sun shines in December in Trabuco Highlands?
What are the months with the lowest UV index in Trabuco Highlands?
What is the UV index reading in December in Trabuco Highlands?
Average temperature in December
Trabuco Highlands, CA
- Average high temperature in December: 63°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in December: 49.8°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).
Average pressure in December
Trabuco Highlands, 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 (29.88"Hg).
Average wind speed in December
Trabuco Highlands, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Trabuco Highlands, CA
- Average humidity in December: 60%
The months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall in December
Trabuco Highlands, CA
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Trabuco Highlands, CA
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (1.9 days).
Average daylight in December /
Average sunshine in December
Trabuco Highlands, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Trabuco Highlands, CA
- Average sunshine days in December: 22.7 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in December
Trabuco Highlands, 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, March, November and December (UV index 4).
Average cloud cover in December
Trabuco Highlands, CA
- Average cloud cover in December: 25
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in December
Trabuco Highlands, 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).
Trabuco Highlands, California, USA
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