2026 Compare Cities Climate:
San Marcos, CA vs Ontario, CA

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Highlights
- Ontario has 14.6% more rainy days than San Marcos.
- Ontario has 5.3% more Sunny Days than San Marcos.
- On the BestPlaces comfort index, Ontario scores 3.3% worse than San Marcos
 San Marcos, CAOntario, CAUnited States
 Rainfall  Unlock1638
 Snowfall0  Unlock28
 Precipitation  Unlock31106
 Sunny265  Unlock205
 Avg. July High  Unlock9286
 Avg. Jan. Low45  Unlock22
 Comfort Index (higher=better)  Unlock8.87
 UV Index5.9  Unlock4.3
 Elevation  Unlock10042443
Reviews for San Marcos    5 Reviews

Just an amazing place to live. I have lived in 7 states and almost countless cities. Sam Marcos is one of the best. This is literally the longest place I have lived  More

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Over 16 years ago

Is this area to expensive for the average income retired  More

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Over 19 years ago

Beautiful Mediterranean climate with bright sunshine and ocean breazes. City is just 15 minutes away from the  More

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Reviews for Ontario    6 Reviews

We've lived in this area for several years. Traveling long distances to other cities for churches. Passing a quiet, unassuming church along the way for years. Until  More

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cool  More

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I think Ontario,ca us awesome because we have an entertainment Venue and large shopping mall to please everyone of all  More

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Start Your Review of Ontario


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