2025 Compare Cities Climate:
South San Francisco, CA vs Mill Valley, CA

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Highlights
- Mill Valley has 87.1% more rainy days than South San Francisco.
- Mill Valley has 1.5% less Sunny Days than South San Francisco.
- On the BestPlaces comfort index, Mill Valley scores 0.0% worse than South San Francisco
 South San Francisco, CAMill Valley, CAUnited States
 Rainfall  Unlock4138
 Snowfall0  Unlock28
 Precipitation  Unlock78106
 Sunny259  Unlock205
 Avg. July High  Unlock7786
 Avg. Jan. Low45  Unlock22
 Comfort Index (higher=better)  Unlock8.47
 UV Index4.9  Unlock4.3
 Elevation  Unlock822443
Reviews for South San Francisco    5 Reviews

It's amazing, but many, many people, including people who live in SF, think that SSF is just a part of SF. Not true. We're right across the highway from SFO, which is  More

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Over 17 years ago

One frustrating thing about South City weather is the number of overcast & foggy days, as compared to other nearby cities on the Peninsula. You can literally look  More

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Over 19 years ago

Been living in bayview hunters point for about 12 years now. What I can say that it's a rough place to live, no one cares about us and the mayor of San Francisco  More

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Reviews for Mill Valley    7 Reviews

I lived in southern Marin County for 20 years and lived it. Just moved  More

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Over 15 years ago

Mill Valley is a perfect place to live and raise a family, if you don't mind a cost of living index of 233. Don't distress - go mountain biking or hiking with  More

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Over 16 years ago

Good weather all year around. Great public schools. Cost of living very high. Crime low wonderful outdoor activities nearby like hiking, beaches,  More

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