December weather forecastMount Baldy, CA
December
Weather in December
The first month of the winter, December, is still a refreshing month in Mount Baldy, California, with temperature in the range of an average low of 42.6°F (5.9°C) and an average high of 58.1°F (14.5°C).Temperature
In Mount Baldy, December is the coldest month, with temperatures averaging a high of 58.1°F (14.5°C) and a low of 42.6°F (5.9°C).Humidity
In December, the average relative humidity is 52%.Rainfall
In Mount Baldy, during December, the rain falls for 4.1 days and regularly aggregates up to 0.59" (15mm) of precipitation. In Mount Baldy, during the entire year, the rain falls for 28.4 days and collects up to 3.86" (98mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Mount Baldy. In Mount Baldy, in December, snow falls for 0.7 days, with typically accumulated 2.2" (56mm) of snow. Throughout the year, there are 6.9 snowfall days, and 10.2" (259mm) of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Mount Baldy.On the first day of the month, sunrise is at 6:39 am and sunset at 4:40 pm. On the last day of December, sunrise is at 6:56 am and sunset at 4:51 pm PST.
Sunshine
January, February and December, with an average of 7h of sunshine, are months with the least sunshine in Mount Baldy.UV index
The months with the lowest UV index in Mount Baldy are November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the UV index of 3 transforms into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mount Baldy, CA
- Average high temperature in December: 58.1°F
The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in December: 42.6°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (42.6°F).
Average pressure in December
Mount Baldy, CA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Mount Baldy, CA
- Average wind speed in December: 5.5mph
The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity in December
Mount Baldy, CA
- Average humidity in December: 52%
The month with the highest relative humidity is March (54%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Mount Baldy, CA
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is February (0.94").
The driest months (with the least rainfall) are July and August (0").
Average rainfall days in December
Mount Baldy, CA
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is March (5 days).
The month with the least rainy days is June (0.6 days).
Average snowfall in December
Mount Baldy, CA
- Average snowfall in December: 2.2"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Mount Baldy, CA
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is March (2.2 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
Mount Baldy, 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: 7h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).
Average sunshine days in December
Mount Baldy, CA
- Average sunshine days in December: 26.1 days
The month with the most sunshine days is August (30.3 days).
The month with the least sunshine days is February (23.3 days).
Average UV index in December
Mount Baldy, 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 November and December (UV index 3).
Average cloud cover in December
Mount Baldy, CA
- Average cloud cover in December: 21
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in December
Mount Baldy, 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).
