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

Change Cities
Highlights
- Castro Valley has 15.1% more rainy days than Sunol.
- Castro Valley has 0.4% more Sunny Days than Sunol.
- On the BestPlaces comfort index, Castro Valley scores 0.0% worse than Sunol
 Sunol, CACastro Valley, CAUnited States
 Rainfall  Unlock2138
 Snowfall0  Unlock28
 Precipitation  Unlock66106
 Sunny260  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low39  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index5.4  Unlock4.3
 Elevation  Unlock1612443
Reviews for Sunol    1 Reviews

Over 16 years ago

We've lived in Sunol for over a decade and it's a rather nice place to live. Very picturesque and, unlike other nearby places in the area, it has managed to keep a lid  More

   |    Reply

Start Your Review of Sunol

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

   |    Reply

Over 11 years ago

Kind of rural but close to Oakland and San  More

   |    Reply

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

   |    Reply

Start Your Review of Castro Valley


Premium Subscription
Includes Cost of Living compares for child care, utilities, transportation, health, taxes, housing for home owners vs renters, weather, insurance premiums and so much more.


The premier source for comprehensive city data for over 30 years.

© Best Places. All rights reserved.