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PORTOLA VALLEY VS.
ATHERTON
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2025 Compare Cities Climate:
Portola Valley, CA vs Atherton, CA
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Highlights
- Atherton has 44.3% less rainy days than Portola Valley.
- Atherton has 0.4% less Sunny Days than Portola Valley.
- On the BestPlaces comfort index, Atherton scores 3.6% better than Portola Valley
Portola Valley, CA
Atherton, CA
United States
Rainfall
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17
38
Snowfall
0
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28
Precipitation
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61
106
Sunny
262
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205
Avg. July High
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80
86
Avg. Jan. Low
41
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22
Comfort Index (higher=better)
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8.7
7
UV Index
4.9
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4.3
Elevation
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59
2443
Jobs
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