December weather forecastNicolaus, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Nicolaus, California, with an average temperature ranging between max 54.3°F (12.4°C) and min 40.6°F (4.8°C).Temperature
Nicolaus's December weather reaches an average high of 54.3°F (12.4°C) and an average low of 40.6°F (4.8°C), making it the coldest month.Humidity
In Nicolaus, the average relative humidity in December is 71%.Rainfall
In Nicolaus, in December, during 10.7 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. Throughout the year, there are 78.2 rainfall days, and 20.43" (519mm) of precipitation is accumulated.Snowfall
December is the only month when snow falls. December has the most snowfall days of the year. Snow falls for 0.1 days.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm PST.
Sunshine
December has the least sunshine of the year in Nicolaus, with an average of 5.5h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 3 during December translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Nicolaus, CA
- Average high temperature in December: 54.3°F
The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is December (54.3°F).
- Average low temperature in December: 40.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest months (with the lowest average low temperature) are January and December (40.6°F).
Average pressure in December
Nicolaus, 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 (29.9"Hg).
Average wind speed in December
Nicolaus, CA
- Average wind speed in December: 5.3mph
The windiest months (with the highest average wind speed) are March and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in December
Nicolaus, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (39%).
Average rainfall in December
Nicolaus, CA
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is March (3.9").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Nicolaus, CA
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (1 days).
Average snowfall days in December
Nicolaus, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Nicolaus, CA
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 5h and 30min
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 30min).
Average sunshine days in December
Nicolaus, CA
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is July (30 days).
The month with the least sunshine days is March (16.1 days).
Average UV index in December
Nicolaus, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Nicolaus, CA
- Average cloud cover in December: 38
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Nicolaus, 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).
