December weather forecastPhelan, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Phelan, California, with an average temperature varying between 54.5°F (12.5°C) and 39.4°F (4.1°C).Temperature
With average temperatures fluctuating between a high of 54.5°F (12.5°C) and a low of 39.4°F (4.1°C), December stands out as the coldest month.Humidity
December is the most humid month, with an average relative humidity of 53%.Rainfall
December is the month with the most rainfall. Rain falls for 4 days and accumulates 0.47" (12mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. The month with the most snowfall in Phelan is December, when snow falls for 1.5 days and typically aggregates up to 1.5" (38mm) of snow.Daylight
The month with the shortest days in Phelan is December, with an average of 9h and 54min of daylight.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, in Phelan, sunrise is at 6:56 am and sunset at 4:50 pm PST.
Sunshine
The month with the least sunshine in Phelan is December, with an average of 6.9h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 3 during December translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Phelan, CA
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in December: 39.4°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is December (39.4°F).
Average pressure in December
Phelan, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Phelan, CA
- Average wind speed in December: 6.3mph
The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is September (5.8mph).
Average humidity in December
Phelan, CA
- Average humidity in December: 53%
The month with the highest relative humidity is December (53%).
The month with the lowest relative humidity is August (33%).
Average rainfall in December
Phelan, CA
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is December (0.47").
The driest month (with the least rainfall) is June (0").
Average rainfall days in December
Phelan, CA
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is March (4.9 days).
The month with the least rainy days is June (0.7 days).
Average snowfall in December
Phelan, CA
- Average snowfall in December: 1.5"
The month with the highest snowfall is December (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Phelan, CA
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (2.4 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
Phelan, 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
Phelan, CA
- Average sunshine days in December: 25.6 days
The month with the most sunshine days is June (29 days).
The month with the least sunshine days is February (23.6 days).
Average UV index in December
Phelan, CA
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Phelan, 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
Phelan, 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).
