Sunnyvale
October
Weather in Sunnyvale for October 2025
Your guide to Sunnyvale weather in October - trends and predictions
In general, the average temperature in Sunnyvale at the beginning of October is 33.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °F by the end of October.
Precipitation in Sunnyvale during October is a rare event, with an average of fewer than 2 rainy days.
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31
Dry days
0
Rainy days
0
Snow days
26°/12°
Temperatures
11 km/h
Avg max wind
53 %
Avg humidity
Sunnyvale in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  31° | 2 32° | 3  33° | 4 33° | 5 35° | ||
| 6 34° | 7 34° | 8 29° | 9  23° | 10  25° | 11  23° | 12  23° |
| 13 22° | 14 21° | 15 25° | 16 23° | 17 21° | 18 27° | 19 31° |
| 20 30° | 21 23° | 22 22° | 23 23° | 24 25° | 25 22° | 26 22° |
| 27 21° | 28 18° | 29 19° | 30 20° | 31 20° |
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Temperatures trend during October in Sunnyvale
See the weather trend as well as the moving average line
October weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 | Partly cloudy | 31° /16° | 0 mm | 8 | |
| Oct. 2 | Partly cloudy | 32° /16° | 0 mm | 8 | |
| Oct. 3 | Sunny | 33° /17° | 0 mm | 8 | |
| Oct. 4 | Sunny | 33° /19° | 0 mm | 8 | |
| Oct. 5 | Sunny | 35° /19° | 0 mm | 9 | |
| Oct. 6 | Sunny | 34° /19° | 0 mm | 8 | |
| Oct. 7 | Sunny | 34° /18° | 0 mm | 9 | |
| Oct. 8 | Sunny | 29° /13° | 0 mm | 8 | |
| Oct. 9 | Patchy rain possible | 23° /12° | 0.1 mm | 6 | |
| Oct. 10 | Cloudy | 25° /14° | 0 mm | 6 | |
| Oct. 11 | Overcast | 23° /11° | 0 mm | 5 | |
| Oct. 12 | Mist | 23° /11° | 0 mm | 5 | |
| Oct. 13 | Overcast | 22° /13° | 0 mm | 5 | |
| Oct. 14 | Overcast | 21° /12° | 0 mm | 5 | |
| Oct. 15 | Cloudy | 25° /13° | 0 mm | 6 | |
| Oct. 16 | Mist | 23° /12° | 0 mm | 5 | |
| Oct. 17 | Mist | 21° /12° | 0 mm | 5 | |
| Oct. 18 | Sunny | 27° /10° | 0 mm | 7 | |
| Oct. 19 | Sunny | 31° /14° | 0 mm | 8 | |
| Oct. 20 | Sunny | 30° /16° | 0 mm | 8 | |
| Oct. 21 | Overcast | 23° /12° | 0 mm | 5 | |
| Oct. 22 | Patchy rain possible | 22° /12° | 0.1 mm | 6 | |
| Oct. 23 | Mist | 23° /11° | 0 mm | 6 | |
| Oct. 24 | Cloudy | 25° /11° | 0 mm | 6 | |
| Oct. 25 | Overcast | 22° /12° | 0 mm | 5 | |
| Oct. 26 | Cloudy | 22° /10° | 0 mm | 5 | |
| Oct. 27 | Partly cloudy | 21° /12° | 0 mm | 5 | |
| Oct. 28 | Overcast | 18° /9° | 0 mm | 5 | |
| Oct. 29 | Sunny | 19° /7° | 0 mm | 5 | |
| Oct. 30 | Sunny | 20° /8° | 0 mm | 5 | |
| Oct. 31 | Overcast | 20° /10° | 0.2 mm | 5 | |
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Important Notice
Our weather forecast for Sunnyvale in October 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 October - FAQ
What are the expected maximum and minimum temperatures in Sunnyvale during October?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sunnyvale during October?
Rainfall in Sunnyvale during October is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Sunnyvale during October?
The average wind speed in Sunnyvale during October is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Sunnyvale
Explore the daily rainfall trends and prepare for Sunnyvales October weather 💧
UV exposure in Sunnyvale during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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