December weather forecastLong Barn, CA
December
Weather in December
The first month of the winter, December, is also a fresh month in Long Barn, California, with an average temperature varying between 50.4°F (10.2°C) and 34.3°F (1.3°C).Temperature
In Long Barn, December is the month with the lowest recorded average temperatures, measuring a high of 50.4°F (10.2°C) and a low of 34.3°F (1.3°C).Humidity
In Long Barn, the average relative humidity in December is 65%.Rainfall
In Long Barn, in December, during 9.7 rainfall days, 4.57" (116mm) of precipitation is typically accumulated. In Long Barn, during the entire year, the rain falls for 77.4 days and collects up to 29.06" (738mm) of precipitation.Snowfall
Months with snowfall in Long Barn are January through May, November and December. In Long Barn, in December, snow falls for 2.9 days, with typically accumulated 3.19" (81mm) of snow. In Long Barn, during the entire year, snow falls for 16.2 days and aggregates up to 38.07" (967mm) of snow.Daylight
The month with the shortest days in Long Barn is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:51 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.1h of sunshine.UV index
The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 3 in December leads to these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Long Barn, CA
- Average high temperature in December: 50.4°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (50.4°F).
- Average low temperature in December: 34.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in December
Long Barn, CA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Long Barn, CA
- Average wind speed in December: 4.9mph
The windiest months (with the highest average wind speed) are February and March (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in December
Long Barn, CA
- Average humidity in December: 65%
The month with the highest relative humidity is March (70%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in December
Long Barn, CA
- Average rainfall in December: 4.57"
The wettest month (with the highest rainfall) is March (5.47").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Long Barn, CA
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.6 days).
Average snowfall in December
Long Barn, CA
- Average snowfall in December: 3.19"
The month with the highest snowfall is February (12.87").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Long Barn, CA
- Average snowfall days in December: 2.9 days
The months with the highest number of snowfall days are February and March (3.7 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
Long Barn, CA
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in December
Long Barn, CA
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is March (15.6 days).
Average UV index in December
Long Barn, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and November (UV index 2).
Average cloud cover in December
Long Barn, CA
- Average cloud cover in December: 31
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in December
Long Barn, 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).
