2025 Compare Cities Climate:
Boulder, CO vs Union City, CA

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Highlights
- Union City has 8.3% less rainy days than Boulder.
- Union City has 8.2% more Sunny Days than Boulder.
- On the BestPlaces comfort index, Union City scores 23.9% better than Boulder
 Boulder, COUnion City, CAUnited States
 Rainfall  Unlock1738
 Snowfall71  Unlock28
 Precipitation  Unlock64106
 Sunny245  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low19  Unlock22
 Comfort Index (higher=better)  Unlock8.87
 UV Index5.8  Unlock4.3
 Elevation  Unlock662443
Reviews for Boulder    55 Reviews

Outside of the university, Boulder had a very distinctive "wealthy hippy" feel. A lot of alternative medicine and a matching ethos. This is changing some among my  More

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We moved here from Texas about 4 years ago and love it here! The amazing sense of community and high regard for the environment are two of the main reasons we love  More

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Over 5 years ago

Most people do much worse than Boulder. I'm the most critical person I've ever met who is never happy or satisfied -- so that's a pretty huge compliment.   More

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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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