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
Riverkern's coldest month, December, registers temperatures that range from a high of 48.7°F (9.3°C) to a low of 30.9°F (-0.6°C).Humidity
The average relative humidity in December in Riverkern, California, is 57%.Rainfall
In Riverkern, in December, it is raining for 7.3 days, with typically 1.89" (48mm) of accumulated precipitation. In Riverkern, during the entire year, the rain falls for 61 days and collects up to 11.81" (300mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 1.5 days. Throughout December, 0.71" (18mm) of snow is accumulated. In Riverkern, during the entire year, snow falls for 9.1 days and aggregates up to 9.13" (232mm) of snow.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of December in Riverkern, sunrise is at 6:46 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 4:50 pm PST.
Sunshine
The months with the least sunshine in Riverkern, California, are January, February and December, with an average of 6.7h of sunshine.UV index
February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Riverkern, California. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Riverkern?
What is the average December temperature in Riverkern?
What is the average humidity in December in Riverkern?
How much does it rain in Riverkern in December?
How many days does it snow in December in Riverkern?
What is the month with the shortest days in Riverkern?
How many hours of daylight does Riverkern have in December?
When is the sunrise / sunset in December in Riverkern?
What is the month with the least sunshine in Riverkern?
How long on average sun shines in December in Riverkern?
When is the lowest UV index in Riverkern?
What is the UV index reading in December in Riverkern?
Average temperature in December
Riverkern, CA
- Average high temperature in December: 48.7°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (48.7°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is December (30.9°F).
Average pressure in December
Riverkern, CA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Riverkern, CA
- Average wind speed in December: 5.6mph
The windiest months (with the highest average wind speed) are May and June (7.3mph).
The calmest months (with the lowest average wind speed) are January and September (5.4mph).
Average humidity in December
Riverkern, CA
- Average humidity in December: 57%
The month with the highest relative humidity is February (59%).
The month with the lowest relative humidity is August (31%).
Average rainfall in December
Riverkern, CA
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is January (2.48").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Riverkern, CA
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is June (1.3 days).
Average snowfall in December
Riverkern, CA
- Average snowfall in December: 0.71"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Riverkern, CA
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (2.7 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
Riverkern, 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: 6h and 4min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 42min).
Average sunshine days in December
Riverkern, CA
- Average sunshine days in December: 22 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (19 days).
Average UV index in December
Riverkern, CA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in December
Riverkern, CA
- Average cloud cover in December: 23
The month with the most cloud cover is March (Cloud cover 26).
The months with the least cloud cover are August and September (Cloud cover 5).
Average visibility in December
Riverkern, 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).
Riverkern, California, USA
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