Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With an average high-temperature of 55°F (12.8°C) and an average low-temperature of 38.1°F (3.4°C), December is the coldest month.Humidity
With an average relative humidity of 51%, December is the most humid month.Rainfall
The month with the most rainfall is December, when the rain falls for 4.9 days and typically aggregates up to 0.83" (21mm) of precipitation.Snowfall
January, November and December are months with snowfall. In Boron, during December, snow falls for 0.1 days and regularly aggregates up to 0.28" (7mm) of snow. Throughout the year, there are 0.7 snowfall days, and 1.1" (28mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 6:40 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:49 pm PST.
Sunshine
In December, the average sunshine is 7.1h.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 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:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. 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
What are the coldest months?
What is the usual temperature for Boron in December?
What is the most humid month?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Boron have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Boron, CA
- Average high temperature in December: 55°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in December: 38.1°F
The month with the highest average low temperature is August (70.3°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).
Average pressure in December
Boron, CA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Boron, CA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is May (11.8mph).
The calmest month (with the lowest average wind speed) is January (6.5mph).
Average humidity in December
Boron, CA
- Average humidity in December: 51%
The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is August (24%).
Average rainfall in December
Boron, CA
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is December (0.83").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Boron, CA
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is March (5.5 days).
The month with the least rainy days is June (0.9 days).
Average snowfall in December
Boron, CA
- Average snowfall in December: 0.28"
The month with the highest snowfall is November (0.71").
The months with the least snowfall are February, March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Boron, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Boron, CA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 7h and 1min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).
Average sunshine days in December
Boron, CA
- Average sunshine days in December: 25 days
The month with the most sunshine days is June (28.2 days).
The month with the least sunshine days is February (22.8 days).
Average UV index in December
Boron, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Boron, CA
- Average cloud cover in December: 19
The months with the most cloud cover are March and December (Cloud cover 19).
The months with the least cloud cover are June, August and September (Cloud cover 5).
Average visibility in December
Boron, 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).
Boron, California, USA
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