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
Old Station witnesses the coldest weather in December, with temperatures averaging a high of 39.4°F (4.1°C) and a low of 24.8°F (-4°C).Humidity
In December, the average relative humidity is 79%.Rainfall
In December, the rain falls for 8.3 days. Throughout December, 4.21" (107mm) of precipitation is accumulated. In Old Station, during the entire year, the rain falls for 83.9 days and collects up to 26.61" (676mm) of precipitation.Snowfall
Months with snowfall in Old Station, California, are January through June, September through December. In Old Station, in December, during 11.2 snowfall days, 19.61" (498mm) of snow is typically accumulated. Throughout the year, there are 62.6 snowfall days, and 99.53" (2528mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:48 pm PST.
Sunshine
December has the least sunshine of the year in Old Station, with an average of 5.1h of sunshine.UV index
The average daily maximum UV index in December in Old Station is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Old Station?
How cold is December in Old Station?
What is the average humidity in December in Old Station?
How much does it rain in Old Station in December?
How much does it snow in Old Station in December?
What is the month with the shortest days in Old Station?
How many hours of daylight does Old Station have in December?
When are sunrise and sunset in December in Old Station?
What is the month with the least sunshine in Old Station?
How many hours of sunshine does Old Station have in December?
How high is the UV index in December in Old Station?
Average temperature in December
Old Station, CA
- Average high temperature in December: 39.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (39.4°F).
- Average low temperature in December: 24.8°F
The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in December
Old Station, CA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Old Station, CA
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Old Station, CA
- Average humidity in December: 79%
The month with the highest relative humidity is March (83%).
The months with the lowest relative humidity are July and August (42%).
Average rainfall in December
Old Station, CA
- Average rainfall in December: 4.21"
The wettest month (with the highest rainfall) is March (4.76").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in December
Old Station, CA
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is April (11.2 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in December
Old Station, CA
- Average snowfall in December: 19.61"
The months with the highest snowfall are February and March (21.85").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Old Station, CA
- Average snowfall days in December: 11.2 days
The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Old Station, CA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Old Station, CA
- Average sunshine days in December: 16 days
The month with the most sunshine days is August (26.6 days).
The month with the least sunshine days is March (12.1 days).
Average UV index in December
Old Station, CA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and November (UV index 1).
Average cloud cover in December
Old Station, CA
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in December
Old Station, CA
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Old Station, California, USA
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