Silicon Valley in december: average Weather, Temperature and Climate
Weather in Silicon Valley in december 2024
The weather in Silicon Valley in december comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
tolerable weather
Weather at 6am
49°F
Clear/Sunny
50% of time
24%
11%
7%
Weather at 12pm
59°F
Clear/Sunny
54% of time
20%
12%
11%
Weather at 6pm
52°F
Clear/Sunny
53% of time
22%
10%
10%
Weather at 3am
49°F
52%
24%
13%
6%
Evolution of daily average temperature and precipitation in Silicon Valley in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Silicon Valley in december.
The climate of Silicon Valley in december is tolerable
In december in Silicon Valley, the climate is quite dry (with 1.9in of rainfall over 4 days). It should be noted a worsening from the previous month since in november there is an average of 1.3in of rainfall over 2 days.
The climate is relatively cold in that area december, but it is bearable by dressing cosy. The thermometer averaged maximum of 61°F. On average, the recorded minimum temperature is 49°F. Thus, the mean temperature average in december in Silicon Valley is 54°F. Note that seasonal normals in contrast with those observed in Silicon Valley in the month of december with a maximum record of 74°F in 2017 and a minimum record of 31°F in 2009. You can hope to have about 7 days with temperatures above 65°F, or 23% of time.
On this month of december, day length in Silicon Valley is generally 09:36. Sunrise is at 07:16 and sunset is at 16:52.
With a correct weather, december is okay (but not the best) to go in this city.
Silicon Valley: another month?
If you can push the dates of your trip to Silicon Valley forward, the month of january has a better weather forecast than december. more information
December: another location in California?
If you want to go to California in december, there are destinations with better weather than Silicon Valley:
In december, Los Angeles , San Diego, Channel Islands National Park, Encinitas, Gaviota and Hollywood have good weather.
Seasonal average climate and temperature of Silicon Valley in december
Check below seasonal norms These datas are set from the weather statements of the last years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 54°F | ||||
| Highest temperature | 61°F | ||||
| Lowest temperature | 49°F | ||||
| Highest record temperature | 74°F (2017) | ||||
| Lowest record temperature | 31°F (2009) | ||||
| Number of days at +65°F | 7 day(s) (23%) | ||||
| Number of days at -32°F | 1 day(s) (3%) | ||||
| Wind | |||||
| Wind speed | 13km/h | ||||
| Wind temperature | 45°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.9in | ||||
| Number of days with rainfall | 4 day(s) (11%) | ||||
| Record daily rainfall | 0.8in (2010) | ||||
| Other climate data | |||||
| Humidity | 76% | ||||
| Visibility | 9.5km | ||||
| Cloud cover | 31% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 8 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 07:16 | ||||
| Time of sunset | 16:52 | ||||
| Length of day | 09:36 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last december?
Here is the day by day recorded weather in Silicon Valley in december 2023:
45°F to 58°F
45°F to 61°F
47°F to 63°F
54°F to 58°F
50°F to 67°F
50°F to 61°F
45°F to 58°F
41°F to 56°F
41°F to 59°F
43°F to 59°F
45°F to 61°F
47°F to 63°F
45°F to 61°F
47°F to 65°F
47°F to 63°F
47°F to 68°F
52°F to 67°F
54°F to 58°F
56°F to 61°F
54°F to 56°F
49°F to 59°F
49°F to 65°F
43°F to 59°F
43°F to 59°F
45°F to 61°F
45°F to 63°F
49°F to 59°F
52°F to 63°F
52°F to 59°F
50°F to 58°F
49°F to 54°F
Map: other cities in California in december
Cities near Silicon Valley:
| San Jose in december | tolerable weather |
| Pescadero in december | tolerable weather |
| Half Moon Bay in december | tolerable weather |
| Moss Beach in december | tolerable weather |
| Santa Cruz California in december | tolerable weather |
| Oakland in december | tolerable weather |
| San Francisco in december | tolerable weather |
| Golden Gate National Recreation Area in december | tolerable weather |
| Stinson Beach in december | tolerable weather |
| Pacific Grove in december | tolerable weather |
| Stockton in december | tolerable weather |
| Carmel-by-the-Sea in december | tolerable weather |
Click over cities on the map for information about the weather in december.
Silicon Valley
perfect weather
good
tolerable
bad
very bad
Weather data for Silicon Valley in december:
Weather data for Silicon Valley for december are derived from an average of the weather forecast since 2009 in Silicon Valley. There is a margin of error and these forecasts are to be considered as general information only. The weather in Silicon Valley can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Silicon Valley.