2026 Compare Cities :
Union City, CA vs Petaluma, CA

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 Union City, CAPetaluma, CAUnited States
 Rainfall  Unlock29.838.1
 Snowfall0  Unlock27.8
 Precipitation Days64.174.8106.2
 Sunny265  Unlock205
 Avg. July High  Unlock83.785.8
 Avg. Jan. Low42.3  Unlock21.7
 Comfort Index (higher=better)  Unlock8.47
 UV Index5.4  Unlock4.3
 Elevation ft.66302443
Reviews for Union City    1 Reviews

Over 20 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 Petaluma    16 Reviews

I agree with the low star reviews. Been here for 25 years, raised a family and seen everything turn to the left and worse. Weather is glorious, love the old Victorians  More

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We’ve lived here for 3 years and we love it. It has taken some time to grow on us. We moved from SF where we had lived over 15 years, we were not used to one year leases  More

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I’ve lived here a couple of years (after living in others parts of the Bay Area for 15+ years) and I love it! Great neighborhoods, friendly folks, good schools with  More

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