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 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
In Willows, the month of December is known for its lowest average temperatures, reaching a high of 52.7°F (11.5°C) and a low of 39.4°F (4.1°C).Humidity
In December, the average relative humidity is 67%.Rainfall
In Willows, in December, it is raining for 10 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, in Willows, there are 71.4 rainfall days, and 14.02" (356mm) of precipitation is accumulated.Snowfall
Months with snowfall are January and December. December is the first month it typically snows. Throughout December, Willows receives 0.39" (10mm) of snow. In Willows, during the entire year, snow aggregates up to 1.3" (33mm).Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:10 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:55 pm PST.
Sunshine
December has the least sunshine of the year in Willows, with an average of 5.8h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 3 in December translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Around midday, solar radiation is most harmful; hence, exposure should be limited. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
When does it start to snow?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Willows have in December?
When is the lowest UV index in Willows?
What is the UV index intensity in December?
Average temperature in December
Willows, CA
- Average high temperature in December: 52.7°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 (52.7°F).
- Average low temperature in December: 39.4°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (39.4°F).
Average pressure in December
Willows, CA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, July and August (29.91"Hg).
Average wind speed in December
Willows, CA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Willows, CA
- Average humidity in December: 67%
The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are July, August and September (35%).
Average rainfall in December
Willows, CA
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is February (2.68").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in December
Willows, CA
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is July (1 days).
Average snowfall in December
Willows, CA
- Average snowfall in December: 0.4"
The month with the highest snowfall is January (0.9").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average daylight in December /
Average sunshine in December
Willows, 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 5min
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 48min).
Average sunshine days in December
Willows, CA
- Average sunshine days in December: 20.1 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (17 days).
Average UV index in December
Willows, 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
Willows, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Willows, 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).
Willows, California, USA
Weather forecast for your location
2. Allow the app to use your location