December weather forecastLake Nacimiento, CA
December
Weather in December
The first month of the winter, December, is still a mild month in Lake Nacimiento, California, with an average temperature ranging between min 42.8°F (6°C) and max 58.1°F (14.5°C).Temperature
December is the coldest month of the year, registering average temperatures as high as 58.1°F (14.5°C) and as low as 42.8°F (6°C).Humidity
The average relative humidity in December in Lake Nacimiento is 66%.Rainfall
In Lake Nacimiento, in December, during 8 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 55.2 rainfall days, and 9.06" (230mm) of precipitation 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 6:55 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:00 pm PST.
Sunshine
February and December, with an average of 6.4h of sunshine, are months with the least sunshine.UV index
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Act with care - The need to guard against sun damage is communicated. When the Sun is at its strongest around midday, find shade and limit exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lake Nacimiento, CA
- Average high temperature in December: 58.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in December: 42.8°F
The month with the highest average low temperature is August (60.8°F).
The coldest months (with the lowest average low temperature) are February and December (42.8°F).
Average pressure in December
Lake Nacimiento, CA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.91"Hg).
Average wind speed in December
Lake Nacimiento, CA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is May (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in December
Lake Nacimiento, CA
- Average humidity in December: 66%
The month with the highest relative humidity is February (68%).
The month with the lowest relative humidity is September (47%).
Average rainfall in December
Lake Nacimiento, CA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is January (1.77").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in December
Lake Nacimiento, CA
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.8 days).
Average daylight in December /
Average sunshine in December
Lake Nacimiento, CA
- Average daylight in December: 9h and 48min
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 24min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 24min).
Average sunshine days in December
Lake Nacimiento, CA
- Average sunshine days in December: 22 days
The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in December
Lake Nacimiento, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
Lake Nacimiento, CA
- Average cloud cover in December: 28
The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in December
Lake Nacimiento, 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).
