December weather forecastStanford, CA
December
Weather in December
December, the first month of the winter in Stanford, is also a moderate month, with an average temperature varying between 56.3°F (13.5°C) and 45.5°F (7.5°C).Temperature
In Stanford, the lowest temperatures are generally noted in December, averaging a high of 56.3°F (13.5°C) and a low of 45.5°F (7.5°C).Humidity
In December, the average relative humidity is 71%.Rainfall
In Stanford, in December, during 8.6 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Stanford, during the entire year, the rain falls for 63.3 days and collects up to 9.53" (242mm) of precipitation.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Stanford, California.On the first day of the month, sunrise is at 7:05 am and sunset at 4:50 pm. On the last day of December, in Stanford, sunrise is at 7:22 am and sunset at 5:01 pm PST.
Sunshine
December has the least sunshine of the year in Stanford, with an average of 5.9h of sunshine.UV index
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Stanford, California. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 3 during December translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Stanford, CA
- Average high temperature in December: 56.3°F
The warmest months (with the highest average high temperature) are July and August (77.5°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in December: 45.5°F
The month with the highest average low temperature is August (57°F).
The coldest months (with the lowest average low temperature) are January and February (45.1°F).
Average pressure in December
Stanford, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).
Average wind speed in December
Stanford, CA
- Average wind speed in December: 5.7mph
The windiest months (with the highest average wind speed) are April and May (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.9mph).
Average humidity in December
Stanford, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (65%).
Average rainfall in December
Stanford, CA
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is February (2.01").
The driest month (with the least rainfall) is July (0").
Average rainfall days in December
Stanford, CA
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.6 days).
Average daylight in December /
Average sunshine in December
Stanford, CA
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 54min
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 54min).
Average sunshine days in December
Stanford, CA
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (18 days).
Average UV index in December
Stanford, CA
- Average UV index in December: 3
The months with the highest UV index are April, May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
Stanford, CA
- Average cloud cover in December: 34
The months with the most cloud cover are March and December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in December
Stanford, 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).
