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United States weather

Weather in Santa Clara County, California for December 2026

Your guide to Santa Clara County weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in Santa Clara County at the beginning of December is 16.8 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.8 °C by the end of December.

    • Rain 🌧️

  • Santa Clara County experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 176.2 mm.

    • More

  • Is December a good time to visit Santa Clara County? check out the best time to travel to Santa Clara County page.

  • ✨ Is December a good time to visit Santa Clara County? – Ask the AI Weatherman

Average dry days
24
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/8°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Santa Clara County Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Fog
17°
2
Patchy rain possible
17°
3
Mist
16°
4
Mist
17°
5
Mist
18°
6
Light rain
17°
7
Light rain shower
15°
8
Cloudy
14°
9
Partly cloudy
14°
10
Overcast
18°
11
Overcast
17°
12
Light rain
16°
13
Overcast
16°
14
Moderate rain
15°
15
Sunny
15°
16
Partly cloudy
15°
17
Fog
17°
18
Light rain
15°
19
Light rain
16°
20
Light rain
15°
21
Moderate rain
15°
22
Moderate rain
16°
23
Partly cloudy
16°
24
Moderate rain
16°
25
Moderate rain
15°
26
Patchy rain possible
14°
27
Moderate rain
14°
28
Partly cloudy
14°
29
Heavy rain at times
14°
30
Moderate or heavy rain shower
14°
31
Moderate rain
13°

Temperatures trend during December in Santa Clara County

See the weather trend as well as the moving average line

December weather in Santa Clara County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Fog
Fog
 17° /7° 0 mm 2.4
Dec. 2 Patchy rain possible
Patchy rain possible
 17° /7° 0 mm 2.4
Dec. 3 Mist
Mist
 16° /7° 0 mm 2.4
Dec. 4 Mist
Mist
 17° /8° 0 mm 2.4
Dec. 5 Mist
Mist
 18° /8° 0 mm 2.3
Dec. 6 Light rain
Light rain
 17° /8° 1.3 mm 2.3
Dec. 7 Light rain shower
Light rain shower
 15° /8° 0.3 mm 2.3
Dec. 8 Cloudy
Cloudy
 14° /7° 0 mm 2.3
Dec. 9 Partly cloudy
Partly cloudy
 14° /5° 0 mm 2.3
Dec. 10 Overcast
Overcast
 18° /5° 0 mm 2.3
Dec. 11 Overcast
Overcast
 17° /8° 0 mm 2.3
Dec. 12 Light rain
Light rain
 16° /9° 7.8 mm 2.2
Dec. 13 Overcast
Overcast
 16° /8° 0 mm 2.2
Dec. 14 Moderate rain
Moderate rain
 15° /7° 22.1 mm 2.2
Dec. 15 Sunny
Sunny
 15° /6° 0 mm 2.2
Dec. 16 Partly cloudy
Partly cloudy
 15° /8° 0 mm 2.2
Dec. 17 Fog
Fog
 17° /9° 0 mm 2.2
Dec. 18 Light rain
Light rain
 15° /8° 4.2 mm 2.2
Dec. 19 Light rain
Light rain
 16° /11° 6.4 mm 2.2
Dec. 20 Light rain
Light rain
 15° /12° 8.5 mm 2.2
Dec. 21 Moderate rain
Moderate rain
 15° /11° 19.8 mm 2.2
Dec. 22 Moderate rain
Moderate rain
 16° /10° 15.6 mm 2.2
Dec. 23 Partly cloudy
Partly cloudy
 16° /9° 0.4 mm 2.2
Dec. 24 Moderate rain
Moderate rain
 16° /9° 20.5 mm 2.2
Dec. 25 Moderate rain
Moderate rain
 15° /8° 15.1 mm 2.2
Dec. 26 Patchy rain possible
Patchy rain possible
 14° /9° 2 mm 2.2
Dec. 27 Moderate rain
Moderate rain
 14° /9° 18.8 mm 2.2
Dec. 28 Partly cloudy
Partly cloudy
 14° /7° 0.1 mm 2.2
Dec. 29 Heavy rain at times
Heavy rain at times
 14° /7° 8.1 mm 2.2
Dec. 30 Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /7° 8.7 mm 2.3
Dec. 31 Moderate rain
Moderate rain
 13° /7° 16.3 mm 2
Next
Important Notice
Our weather forecast for Santa Clara County in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Santa Clara County forecast closer to your planned date for the most up-to-date weather information.
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Santa Clara County in December - FAQ

What are the expected maximum and minimum temperatures in Santa Clara County during December?
During December, expect a variety of temperatures with highs around 15° and lows near 8°, suitable for diverse activities and preferences.

How much rainfall should be expected in Santa Clara County during December?
Significant rainfall exceeding 176.2 mm is expected in Santa Clara County during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Santa Clara County during December?
The average wind speed in Santa Clara County during December is 9 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Santa Clara County

Explore the daily rainfall trends and prepare for Santa Clara Countys December weather 💧
Typically, Santa Clara County has 7 rainy days in December with a total of 176.2 mm of rainfall.
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