December weather forecastWinters, CA
December
Weather in December
December, the first month of the winter in Winters, is also a fresh month, with an average temperature varying between 54.3°F (12.4°C) and 41°F (5°C).Temperature
Winters's coldest month, December, registers temperatures that range from a high of 54.3°F (12.4°C) to a low of 41°F (5°C).Humidity
In December, the average relative humidity is 71%.Rainfall
In Winters, during December, the rain falls for 10.5 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 71.7 rainfall days, and 13.43" (341mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:57 pm PST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.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 reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 3 in December translates into the following instructions:
Undertake protective steps - Preventing sun damage is advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Winters, CA
- Average high temperature in December: 54.3°F
The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (54.3°F).
- Average low temperature in December: 41°F
The month with the highest average low temperature is August (58.3°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).
Average pressure in December
Winters, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in December
Winters, CA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest months (with the lowest average wind speed) are January and November (5mph).
Average humidity in December
Winters, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (46%).
Average rainfall in December
Winters, CA
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is February (2.68").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Winters, CA
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is July (0.8 days).
Average snowfall in December
Winters, CA
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.1").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Winters, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Winters, CA
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
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
Winters, CA
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is July (30.1 days).
The month with the least sunshine days is March (16.9 days).
Average UV index in December
Winters, 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
Winters, CA
- Average cloud cover in December: 39
The months with the most cloud cover are March and December (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in December
Winters, 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).
