December weather forecastSanta Margarita Groves, CA
December
Weather in December
December, the first month of the winter in Santa Margarita Groves, is also an enjoyable month, with temperature in the range of an average high of 61.7°F (16.5°C) and an average low of 43.5°F (6.4°C).Temperature
Santa Margarita Groves's December weather, marked by an average high temperature of 61.7°F (16.5°C) and an average low temperature of 43.5°F (6.4°C), is the coldest in the year.Humidity
The average relative humidity in December is 58%.Rainfall
The month with the most rainfall is December, when the rain falls for 6.5 days and typically aggregates up to 1.81" (46mm) of precipitation.Daylight
The month with the shortest days in Santa Margarita Groves is December, with an average of 10h and 0min of daylight.On the first day of December in Santa Margarita Groves, sunrise is at 6:35 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 4:51 pm PST.
Sunshine
With an average of 6.5h of sunshine, December has the least sunshine of the year.UV index
December is the month with the lowest UV index in Santa Margarita Groves, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 3 translates into these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Santa Margarita Groves, CA
- Average high temperature in December: 61.7°F
The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in December: 43.5°F
The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).
Average pressure in December
Santa Margarita Groves, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Santa Margarita Groves, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in December
Santa Margarita Groves, CA
- Average humidity in December: 58%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in December
Santa Margarita Groves, CA
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Santa Margarita Groves, 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 (1.4 days).
Average daylight in December /
Average sunshine in December
Santa Margarita Groves, 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 30min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in December
Santa Margarita Groves, CA
- Average sunshine days in December: 23.4 days
The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in December
Santa Margarita Groves, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Santa Margarita Groves, CA
- Average cloud cover in December: 26
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in December
Santa Margarita Groves, 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).
