Sunnyvale
December
Weather in Sunnyvale for December 2024
Your guide to Sunnyvale weather in December - trends and predictions
In general, the average temperature in Sunnyvale at the beginning of December is 15.6 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 15.3 °F by the end of December.
Sunnyvale sees moderate rainfall in December, averaging 10 rainy days.
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21
Dry days
10
Rainy days
0
Snow days
16°/9°
Temperatures
9 km/h
Avg max wind
71 %
Avg humidity
Sunnyvale in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | ||||||
| 2  15° | 3 16° | 4 14° | 5 20° | 6  15° | 7 14° | 8  13° |
| 9 15° | 10  14° | 11 16° | 12 17° | 13 16° | 14 17° | 15  17° |
| 16  19° | 17 19° | 18 14° | 19  16° | 20 13° | 21 15° | 22 17° |
| 23 15° | 24 15° | 25 16° | 26 16° | 27 16° | 28 17° | 29 16° |
| 30 14° | 31 12° |
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Temperatures trend during December in Sunnyvale
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 | Mist | 15° /6° | 0 mm | 4 | |
| Dec. 2 | Patchy rain possible | 15° /9° | 0.1 mm | 4 | |
| Dec. 3 | Mist | 16° /10° | 0 mm | 4 | |
| Dec. 4 | Mist | 14° /11° | 0 mm | 3 | |
| Dec. 5 | Mist | 20° /10° | 0 mm | 5 | |
| Dec. 6 | Light rain | 15° /9° | 2 mm | 4 | |
| Dec. 7 | Light rain shower | 14° /8° | 2.2 mm | 3 | |
| Dec. 8 | Cloudy | 13° /6° | 0 mm | 3 | |
| Dec. 9 | Cloudy | 15° /3° | 0 mm | 3 | |
| Dec. 10 | Overcast | 14° /5° | 0 mm | 3 | |
| Dec. 11 | Overcast | 16° /7° | 0 mm | 4 | |
| Dec. 12 | Overcast | 17° /8° | 0 mm | 4 | |
| Dec. 13 | Overcast | 16° /7° | 0 mm | 4 | |
| Dec. 14 | Overcast | 17° /8° | 0 mm | 4 | |
| Dec. 15 | Sunny | 17° /8° | 0 mm | 5 | |
| Dec. 16 | Partly cloudy | 19° /8° | 0 mm | 5 | |
| Dec. 17 | Patchy rain possible | 19° /10° | 0.1 mm | 4 | |
| Dec. 18 | Light rain shower | 14° /12° | 13.5 mm | 3 | |
| Dec. 19 | Moderate or heavy rain with thunder | 16° /12° | 18.6 mm | 4 | |
| Dec. 20 | Light rain shower | 13° /11° | 27 mm | 3 | |
| Dec. 21 | Partly cloudy | 15° /9° | 0 mm | 5 | |
| Dec. 22 | Sunny | 17° /9° | 0 mm | 5 | |
| Dec. 23 | Partly cloudy | 15° /7° | 0 mm | 5 | |
| Dec. 24 | Overcast | 15° /8° | 0 mm | 4 | |
| Dec. 25 | Partly cloudy | 16° /8° | 0 mm | 5 | |
| Dec. 26 | Cloudy | 16° /8° | 0 mm | 4 | |
| Dec. 27 | Light rain shower | 16° /9° | 4 mm | 4 | |
| Dec. 28 | Patchy rain possible | 17° /12° | 0.4 mm | 4 | |
| Dec. 29 | Light rain | 16° /11° | 12.4 mm | 4 | |
| Dec. 30 | Light rain shower | 14° /10° | 5.3 mm | 3 | |
| Dec. 31 | Light rain shower | 12° /9° | 1 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Sunnyvale 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 Sunnyvale forecast closer to your planned date for the most up-to-date weather information.
Sunnyvale in December - FAQ
What are the expected maximum and minimum temperatures in Sunnyvale during December?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sunnyvale during December?
Moderate rainfall is anticipated in Sunnyvale during December, with a total of 86.5 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Sunnyvale during December?
The average wind speed in Sunnyvale during December is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
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