December weather forecastRunning Springs, CA
December
Weather in December
December, the first month of the winter in Running Springs, is still a cool month, with an average temperature fluctuating between 38.3°F (3.5°C) and 53.4°F (11.9°C).Temperature
December is the coldest month, with an average high-temperature of 53.4°F (11.9°C) and an average low-temperature of 38.3°F (3.5°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 52%.Rainfall
In Running Springs, in December, it is raining for 5.5 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, there are 42.2 rainfall days, and 5.55" (141mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall in Running Springs. In Running Springs, during December, snow falls for 2.5 days and regularly aggregates up to 2.09" (53mm) of snow. In Running Springs, during the entire year, snow falls for 15.6 days and aggregates up to 18.35" (466mm) of snow.Daylight
The month with the shortest days in Running Springs is December, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:36 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 4:49 pm PST.
Sunshine
With an average of 6.9h of sunshine, December has the least sunshine of the year.UV index
January, 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 health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Running Springs, CA
- Average high temperature in December: 53.4°F
The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (53.4°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in December
Running Springs, CA
- Average pressure in December: 30.07"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
Running Springs, CA
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in December
Running Springs, CA
- Average humidity in December: 52%
The months with the highest relative humidity are February and December (52%).
The month with the lowest relative humidity is August (32%).
Average rainfall in December
Running Springs, CA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Running Springs, CA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in December
Running Springs, CA
- Average snowfall in December: 2.09"
The month with the highest snowfall is April (4.09").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Running Springs, CA
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Running Springs, CA
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 54min
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 54min).
Average sunshine days in December
Running Springs, CA
- Average sunshine days in December: 23.6 days
The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.8 days).
Average UV index in December
Running Springs, 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 January, February, November and December (UV index 3).
Average cloud cover in December
Running Springs, CA
- Average cloud cover in December: 22
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Running Springs, 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).
