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 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
Santa Clara's coldest month, December, generally records average temperatures ranging from a high of 56.7°F (13.7°C) to a low of 43.5°F (6.4°C).Humidity
The average relative humidity in December is 71%.Rainfall
In Santa Clara, in December, it is raining for 9.8 days, with typically 1.69" (43mm) of accumulated precipitation. Throughout the year, in Santa Clara, there are 70.2 rainfall days, and 9.8" (249mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:21 am and sunset at 5:00 pm PST.
Sunshine
The month with the least sunshine in Santa Clara is December, with an average of 6h of sunshine.UV index
The months with the lowest UV index in Santa Clara, California, are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily UV index of 3 turns into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are the coldest months in Santa Clara?
What is the average December temperature in Santa Clara?
What is the average humidity in December in Santa Clara?
How many days does it rain in December in Santa Clara?
What is the month with the shortest days in Santa Clara?
What is the average length of the day in December in Santa Clara?
What time are sunrise and sunset in December in Santa Clara?
What is the month with the least sunshine in Santa Clara?
How many hours of sunshine does Santa Clara have in December?
What is the month with the lowest UV index in Santa Clara?
What is the UV index reading in December in Santa Clara?
Average temperature in December
Santa Clara, CA
- Average high temperature in December: 56.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (56.7°F).
- Average low temperature in December: 43.5°F
The month with the highest average low temperature is August (56.3°F).
The coldest months (with the lowest average low temperature) are January and February (43.3°F).
Average pressure in December
Santa Clara, 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, August and September (29.92"Hg).
Average wind speed in December
Santa Clara, CA
- Average wind speed in December: 5mph
The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in December
Santa Clara, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (61%).
Average rainfall in December
Santa Clara, CA
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is March (1.77").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Santa Clara, CA
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is August (0.8 days).
Average daylight in December /
Average sunshine in December
Santa Clara, CA
- Average daylight in December: 9h and 4min
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: 6h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in December
Santa Clara, CA
- Average sunshine days in December: 20.1 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (16.7 days).
Average UV index in December
Santa Clara, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Santa Clara, CA
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in December
Santa Clara, 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).
Santa Clara, California, USA
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