2026 Compare Cities Climate:
Castro Valley, CA vs San Luis Obispo, CA

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Highlights
- San Luis Obispo has 6.1% less rainy days than Castro Valley.
- San Luis Obispo has 10.0% more Sunny Days than Castro Valley.
- On the BestPlaces comfort index, San Luis Obispo scores 2.3% better than Castro Valley
 Castro Valley, CASan Luis Obispo, CAUnited States
 Rainfall  Unlock2038
 Snowfall0  Unlock28
 Precipitation  Unlock51106
 Sunny261  Unlock205
 Avg. July High  Unlock7486
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock8.87
 UV Index5.4  Unlock4.3
 Elevation  Unlock2332443
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 12 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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Reviews for San Luis Obispo    21 Reviews

MY FIANCEE AND I ARE LOOKING TO MOVE TO SLO FOR RETIREMENT ( NEXT MONTH ) WE ARE BOTH ARTISTS AND HOPE OUR TALENT WILL HELP WITH COST OF LIVING IN SLO!!! ANY  More

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Over 11 years ago

In almost any season of the year in San Luis Obispo, you’ll find the sun shining and the temperature hitting around 70º at some point in the day. With the temperature  More

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San Luis Obispo and surrounding areas are beautiful, great weather, beaches, farms markets, a downtown area full of some of the best bars and restaurants, wine country,  More

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