December weather forecastAdelanto, CA
December
Weather in December
December, the first month of the winter in Adelanto, is also a fresh month, with temperature in the range of an average high of 53.2°F (11.8°C) and an average low of 38.3°F (3.5°C).Temperature
Adelanto's December weather, marked by an average high temperature of 53.2°F (11.8°C) and an average low temperature of 38.3°F (3.5°C), is the coldest in the year.Humidity
The most humid month is December, with an average relative humidity of 52%.Rainfall
December is the month with the most rainfall. Rain falls for 5.4 days and accumulates 0.98" (25mm) of precipitation.Snowfall
January, February, April, November and December are months with snowfall in Adelanto, California. In Adelanto, California, during December, snow falls for 0.3 days and regularly aggregates up to 0.91" (23mm) of snow. In Adelanto, during the entire year, snow falls for 2.1 days and aggregates up to 3.78" (96mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December in Adelanto, sunrise is at 6:38 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:49 pm PST.
Sunshine
January and December, with an average of 7h of sunshine, are months with the least sunshine in Adelanto, California.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Adelanto. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 3 suggests these recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Stay sun-safe with clothing that is both closely woven and worn loosely. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Adelanto, CA
- Average high temperature in December: 53.2°F
The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is December (53.2°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in December
Adelanto, 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 (29.83"Hg).
Average wind speed in December
Adelanto, CA
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is May (10.3mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in December
Adelanto, CA
- Average humidity in December: 52%
The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (27%).
Average rainfall in December
Adelanto, CA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is December (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Adelanto, CA
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (0.9 days).
Average snowfall in December
Adelanto, CA
- Average snowfall in December: 0.91"
The month with the highest snowfall is November (1.73").
The months with the least snowfall are March, May, June, July, August, September and October (0").
Average snowfall days in December
Adelanto, CA
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Adelanto, 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 months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 7h and 0min).
Average sunshine days in December
Adelanto, CA
- Average sunshine days in December: 24.6 days
The month with the most sunshine days is June (28.9 days).
The month with the least sunshine days is February (22.4 days).
Average UV index in December
Adelanto, CA
- Average UV index in December: 3
The months with the highest UV index are June, 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
Adelanto, CA
- Average cloud cover in December: 21
The month with the most cloud cover is December (Cloud cover 21).
The months with the least cloud cover are June and August (Cloud cover 5).
Average visibility in December
Adelanto, 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).
