2025 Compare Cities Climate:
Newark, CA vs Castro Valley, CA

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Highlights
- Castro Valley has 37.4% more rainy days than Newark.
- Castro Valley has 0.0% more Sunny Days than Newark.
- On the BestPlaces comfort index, Castro Valley scores 2.3% worse than Newark
 Newark, CACastro Valley, CAUnited States
 Rainfall  Unlock2138
 Snowfall0  Unlock28
 Precipitation  Unlock66106
 Sunny261  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index5.4  Unlock4.3
 Elevation  Unlock1612443
Reviews for Newark    5 Reviews

Over 4 years ago

Moved in 2 years ago and really dislike it. If you live close to the bay - forget about having a swimming pool - it is somewhat cold all year round, especially at night.  More

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Over 16 years ago

I live in Newark (south-east side of San Francisco Bay), and there is a lot of small plane noise. All day long, especially on the weekends, small private planes are  More

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Over 17 years ago

The climate in Newark is very temperate in that it does not get as hot in the valley but yet not as cool as in San  More

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Reviews for Castro Valley    7 Reviews

CURMUDGEON - THANK YOU for your post. The most important part of your comment is your second paragraph. "Hodge-Podge" is the correct word for a lot of Castro  More

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Over 11 years ago

Kind of rural but close to Oakland and San  More

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Castro Valley is the largest unincorporated "city" in the Bay Area. Over the years, several attempts have been made to incorporate, but they have all been defeated at  More

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