Joshua Tree Weather in December: Temperature, Precipitation, Wind
Joshua Tree, United States in December experiences a cool desert climate characterized by mild days and chilly nights. The average temperature hovers around 11.0°C (51.8°F), with daytime highs reaching 18.0°C (64.4°F) and nighttime lows dipping to 5.8°C (42.4°F). Visitors to Joshua Tree National Park should prepare for significant temperature swings between day and night.
December in Joshua Tree boasts clear, sunny days with minimal cloud cover, averaging only 8.1% throughout the month. The area receives abundant sunshine, resulting in a high average UV index of 5.7. Sunscreen and protective clothing are essential for outdoor activities in the park’s iconic rock formations and desert landscapes.
Precipitation is scarce in Joshua Tree during December, with an average of only 0.37 mm (0.015 inches) of rainfall. Rain occurs on approximately 2 days of the month, with a low 6.5% probability of precipitation. The arid conditions contribute to excellent visibility, averaging 15.9 km (9.9 miles).
Wind plays a significant role in Joshua Tree’s December weather. Average wind speeds reach 15.0 km/h (9.3 mph), with gusts up to 24.8 km/h (15.4 mph). The persistent breeze enhances the feeling of coolness, during early mornings and evenings.
Humidity levels remain relatively low in December, averaging 45.1%. The dry air contributes to the region’s comfort during daytime hours but amplifies the nighttime chill. Visitors should be prepared for “feels like” temperatures ranging from 18.0°C (64.4°F) during the day to 3.9°C (39.1°F) at night.
December days in Joshua Tree are short, with sunrise occurring around 6:43 AM and sunset at approximately 4:38 PM. The limited daylight hours impact hiking and outdoor exploration schedules in popular areas such as Hidden Valley and Barker Dam.
Atmospheric pressure in Joshua Tree during December averages 1019.8 hPa, indicating stable weather conditions. The combination of clear skies, low humidity, and stable pressure creates ideal conditions for stargazing at night, a popular activity in the park’s dark sky environment.
What is the temperature in Joshua Tree in December?
Average air temperature in Joshua Tree is 11°C (51.8°F) in December. The outside temperature in Joshua Tree feels like 10.4°C (50.7°F) on a typical December day. The highest average temperature during sunny days is 18°C (64.4°F) and feels like 18°C (64.4°F). The lowest average temperature after dark is 5.8°C (42.4°F) which feels like 3.9°C (39.1°F).
How hot is Joshua Tree in December?
The hot temperature in December in Joshua Tree rises to 23.3°C (73.9°F) on sunny days with low cloud coverage and 45.1% humidity. During hottest days of December it feels like 23.3 °C (73.9°F). The average maximum temp in Joshua Tree is 18°C (73.9°F) during day time in December.
How cold is Joshua Tree in December?
The coldest temp in Joshua Tree in December drops to 2.5°C (36.5°F) during the cold nights. With 15km/h (9.3mph) winds and 45.1% humidity it feels like 0.1°C (32.2°F) on the coldest nights. The average minimum temperature is 5.8°C (42.4°F) during night time in December.
Does it rain in Joshua Tree in December?
Yes, it rains for 2 days in Joshua Tree, United States in December averaging 0.37 mm of precipitation. Joshua Tree has a 6.5% chance for rain throughout the entire month of December.
How much does it rain in Joshua Tree throughout December?
Joshua Tree has 0.37 mm (0.01 inch) of rain per day on average in December. It rains for an average of 2 days out of the entire month.
Is Joshua Tree windy in December?
The average speed of wind in Joshua Tree, United States during December is 15km/h (9.3mph) and average windgust is 24.8km/h (15.4mph). On some days in December wind can reach up to 25.6km/h (15.9mph).
What is the direction of the wind in Joshua Tree in December?
Most days of December the wind is blowing from West-Northwest direction in Joshua Tree.
What are the humidity levels in Joshua Tree in December?
The average humidity levels in Joshua Tree in December are 45.1%. Daily humidity levels in Joshua Tree range from 18.5% to 85.3% during December.
How many hours of daylight are in Joshua Tree in December?
Joshua Tree has 9 hours 55 minutes of daylight in December on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Joshua Tree in December is at 6:43:28 and the sunset is at 16:38:38.
What is the cloud coverage in Joshua Tree in December?
Clouds cover 8.1% of the sky on average throughout December in Joshua Tree. The cloud coverage ranges from 0% to 83.4% depending on the day of the month.
What is the UV level in December in Joshua Tree?
The average UV index in Joshua Tree is 5.7 in December. UV levels change throughout the month and range from 2 to 8.
What is the solar radiation in Joshua Tree in December?
The average solar radiation is 127.3 W/m2 (Watts per square meter) in Joshua Tree during December. However solar radiation levels change throughout the month and range from 40.3 W/m2 to 164.3 W/m2.
What is the solar energy during December in Joshua Tree?
The average solar energy during December in Joshua Tree is 11 MJ/m2 (megajoules per square metre). Solar energy ranges from 3.5 MJ/m2, to 14.2 MJ/m2 during December.
Are there severe weather risks in Joshua Tree in December?
Yes, there is a 10% risk for severe weather in Joshua Tree, United States in December.
What is the air pressure in Joshua Tree in December?
On average the air pressure in Joshua Tree in December is 1019.8 mb (millibars). Throughout the month the sea level pressure ranges from 1012.8 mb to 1027.6 mb.
What is the visibility in Joshua Tree in December?
The average daylight visibility in Joshua Tree in December is 15.9 km (9.9 miles). Depending on the precipitation the visibility ranges from 14.6 km (9.1 miles) to 16.1 km (10 miles) throughout December.
What is the dew point in Joshua Tree in December?
The average dew point in Joshua Tree during December is -1.9°C (28.7°F).
Where is the data for Joshua Tree climate in December coming from?
The climate data for Joshua Tree, California, United States in December is collected from the following weather stations.
- TWENTYNINE PALMS MC, CA US
- PALM SPRINGS ASOS, CA US
- BIG BEAR CITY AIRPORT, CA US
- CW1828 Joshua Tree CA US
- EW7192 Yucca Valley CA US
- KL35
- KNXP
- KPSP