2025 Compare Cities Climate:
Union City, CA vs Sunnyvale, CA

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Highlights
- Sunnyvale has 7.2% less rainy days than Union City.
- Sunnyvale has 1.9% less Sunny Days than Union City.
- On the BestPlaces comfort index, Sunnyvale scores 0.0% worse than Union City
 Union City, CASunnyvale, CAUnited States
 Rainfall  Unlock1538
 Snowfall0  Unlock28
 Precipitation  Unlock63106
 Sunny265  Unlock205
 Avg. July High  Unlock8086
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock8.87
 UV Index5.4  Unlock4.3
 Elevation  Unlock1252443
Reviews for Union City    1 Reviews

Over 19 years ago

Hi, I am looking for a small, friendly town with low crime and friendly people, outdoor activites, mellow, etc. (in the bay area). I am currently hoping to move to  More

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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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