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

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Highlights
- Sunnyvale has 16.3% less rainy days than Castaic.
- Sunnyvale has 8.1% less Sunny Days than Castaic.
- On the BestPlaces comfort index, Sunnyvale scores 1.1% worse than Castaic
 Castaic, CASunnyvale, CAUnited States
 Rainfall  Unlock1538
 Snowfall0  Unlock28
 Precipitation  Unlock63106
 Sunny283  Unlock205
 Avg. July High  Unlock8086
 Avg. Jan. Low46  Unlock22
 Comfort Index (higher=better)  Unlock8.87
 UV Index6.2  Unlock4.3
 Elevation  Unlock1252443
Reviews for Castaic    3 Reviews

Over 9 years ago

I've lived in northern Castaic for 14 years so this review is for northern Castaic Pros: convenient freeway access, boating on Lake Castaic, lots of gas stations,  More

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Over 11 years ago

Formerly a "truck stop" town, Castaic is the last town before going over the Grapevine, heading North on I-5 towards San Francisco. The town is unincorporated and sits  More

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Over 12 years ago

I currently live in Valencia. Before I consider purchasing a house in Castaic off Lake Hughes Rd and closer to the lake, is it safe to live in this neighborhood? Any  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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