December weather forecastJoshua Tree, CA
December
Weather in December
The first month of the winter, December, is still a mild month in Joshua Tree, California, with an average temperature fluctuating between 41.9°F (5.5°C) and 55.6°F (13.1°C).Temperature
With average high and low temperatures of 55.6°F (13.1°C) and 41.9°F (5.5°C) respectively, December is Joshua Tree's coldest month.Humidity
The most humid month is December, with an average relative humidity of 45%.Rainfall
In Joshua Tree, in December, during 4.1 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Joshua Tree, during the entire year, the rain falls for 41.7 days and collects up to 4.72" (120mm) of precipitation.Snowfall
January, February and December are months with snowfall in Joshua Tree. December is the month with the most snowfall in Joshua Tree. Snow falls for 0.3 days and accumulates 1.06" (27mm) 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 the month, sunrise is at 6:33 am and sunset at 4:35 pm. On the last day of December, sunrise is at 6:50 am and sunset at 4:46 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 7.1h of sunshine.UV index
December is the month with the lowest UV index in Joshua Tree, 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: A maximum daily UV index of 3 during December morphs into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Joshua Tree, CA
- Average high temperature in December: 55.6°F
The warmest month (with the highest average high temperature) is July (95°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in December: 41.9°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in December
Joshua Tree, 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 (29.79"Hg).
Average wind speed in December
Joshua Tree, CA
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is November (6.4mph).
Average humidity in December
Joshua Tree, CA
- Average humidity in December: 45%
The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (23%).
Average rainfall in December
Joshua Tree, CA
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is July (0.91").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Joshua Tree, CA
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is July (7.2 days).
The month with the least rainy days is June (1.4 days).
Average snowfall in December
Joshua Tree, CA
- Average snowfall in December: 1.06"
The month with the highest snowfall is December (1.06").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Joshua Tree, CA
- Average snowfall days in December: 0.3 days
The months with the highest number of snowfall days are February and December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Joshua Tree, 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 6min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
Joshua Tree, CA
- Average sunshine days in December: 26.2 days
The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (19.6 days).
Average UV index in December
Joshua Tree, CA
- Average UV index in December: 3
The month with the highest UV index is June (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Joshua Tree, CA
- Average cloud cover in December: 18
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 4).
Average visibility in December
Joshua Tree, 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).
