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

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Highlights
- Castaic has 10.8% more rainy days than Union City.
- Castaic has 6.8% more Sunny Days than Union City.
- On the BestPlaces comfort index, Castaic scores 1.1% better than Union City
 Union City, CACastaic, CAUnited States
 Rainfall  Unlock1838
 Snowfall0  Unlock28
 Precipitation  Unlock34106
 Sunny265  Unlock205
 Avg. July High  Unlock9086
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock8.97
 UV Index5.4  Unlock4.3
 Elevation  Unlock12272443
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 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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