2025 Compare Cities Climate:
Sunnyvale, CA vs Hayward, CA

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Highlights
- Hayward has 16.9% more rainy days than Sunnyvale.
- Hayward has 1.2% less Sunny Days than Sunnyvale.
- On the BestPlaces comfort index, Hayward scores 1.1% worse than Sunnyvale
 Sunnyvale, CAHayward, CAUnited States
 Rainfall  Unlock1838
 Snowfall0  Unlock28
 Precipitation  Unlock65106
 Sunny260  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock8.77
 UV Index5.1  Unlock4.3
 Elevation  Unlock1052443
Reviews for Sunnyvale    14 Reviews

At this point, I would only recommend moving to silicon valley for the job market. Sure, the weather is great and the restaurants offer huge variety. But the costs of  More

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Like previous reviewer, tech company's tyranny over city gov and quality of living has negatively impacted a fantastic place to live. Climate, while super, is grossly  More

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I've lived here for 40 years. While the weather is fabulous, For the past ten years of high density housing mostly needed to house thousands of a young up coming tech  More

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Reviews for Hayward    4 Reviews

I've lived in Hayward for 20 years. Traditionally a working  More

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Hetchy Hechy water is very pure,the summers are about 78f..warm enough. Winters are sunny for the most part and by average.One University and one College in this small  More

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Over 11 years ago

convenient BART and bus if you have no  More

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