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
December, having an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 29.1°F (-1.6°C), is the coldest month.Humidity
The average relative humidity in December in Downieville, California, is 72%.Rainfall
In Downieville, during December, the rain falls for 7.5 days and regularly aggregates up to 5.55" (141mm) of precipitation. Throughout the year, in Downieville, there are 72.9 rainfall days, and 36.06" (916mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In December, in Downieville, it is snowing for 9 days. Throughout December, 21.69" (551mm) of snow is accumulated. Throughout the year, in Downieville, California, there are 53.3 snowfall days, and 151.57" (3850mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December in Downieville, sunrise is at 7:05 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:49 pm PST.
Sunshine
In December, the average sunshine in Downieville is 5.7h.UV index
The months with the lowest UV index in Downieville are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 2 in December translates into these instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What is the coldest month in Downieville?
How cold is December in Downieville?
What is the average humidity in December in Downieville?
How much does it rain in Downieville in December?
How much does it snow in Downieville in December?
What is the month with the shortest days in Downieville?
How many hours of daylight does Downieville have in December?
When are sunrise and sunset in December in Downieville?
How long on average sun shines in December in Downieville?
What are the months with the lowest UV index in Downieville?
What is the UV index intensity in December in Downieville?
Average temperature in December
Downieville, CA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (52.9°F).
The coldest month (with the lowest average low temperature) is December (29.1°F).
Average pressure in December
Downieville, CA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Downieville, CA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is February (6.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Downieville, CA
- Average humidity in December: 72%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is July (39%).
Average rainfall in December
Downieville, CA
- Average rainfall in December: 5.55"
The wettest month (with the highest rainfall) is March (7.09").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Downieville, CA
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is April (11 days).
The month with the least rainy days is July (1.8 days).
Average snowfall in December
Downieville, CA
- Average snowfall in December: 21.69"
The month with the highest snowfall is March (37.6").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Downieville, CA
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is March (11.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Downieville, CA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in December
Downieville, CA
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is July (28 days).
The month with the least sunshine days is March (12.6 days).
Average UV index in December
Downieville, CA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Downieville, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in December
Downieville, CA
- Average visibility in December: 6mi
The months with the highest visibility are May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March and April (5mi).
Downieville, California, USA
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