December weather forecastMountain Center, CA
December
Weather in December
The first month of the winter, December, is still a refreshing month in Mountain Center, California, with an average temperature ranging between min 40.5°F (4.7°C) and max 57°F (13.9°C).Temperature
The lowest temperatures are recorded in December, with averages reaching a high of 57°F (13.9°C) and a low of 40.5°F (4.7°C).Humidity
In December, the average relative humidity in Mountain Center is 53%.Rainfall
In Mountain Center, in December, during 5.3 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. Throughout the year, there are 52.8 rainfall days, and 7.01" (178mm) of precipitation is accumulated.Snowfall
January, April through October and December are months without snowfall.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:34 am and sunset at 4:38 pm. On the last day of December, in Mountain Center, sunrise is at 6:51 am and sunset at 4:49 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.8h of sunshine.UV index
The months with the lowest UV index in Mountain Center are February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 3 in December leads to these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mountain Center, CA
- Average high temperature in December: 57°F
The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is December (57°F).
- Average low temperature in December: 40.5°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure in December
Mountain Center, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Mountain Center, CA
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest month (with the lowest average wind speed) is September (5.1mph).
Average humidity in December
Mountain Center, CA
- Average humidity in December: 53%
The month with the highest relative humidity is February (54%).
The month with the lowest relative humidity is August (37%).
Average rainfall in December
Mountain Center, CA
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Mountain Center, CA
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is July (6.3 days).
The month with the least rainy days is June (1.8 days).
Average snowfall in December
Mountain Center, CA
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are January, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Mountain Center, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mountain Center, 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 48min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in December
Mountain Center, CA
- Average sunshine days in December: 24.8 days
The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is July (20.7 days).
Average UV index in December
Mountain Center, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
Mountain Center, CA
- Average cloud cover in December: 23
The month with the most cloud cover is December (Cloud cover 23).
The months with the least cloud cover are June and August (Cloud cover 6).
Average visibility in December
Mountain Center, 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).
