2025 Compare Cities Climate:
Cos Cob, CT vs Williamstown, MA

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Highlights
- Williamstown has 12.8% less rainy days than Cos Cob.
- Williamstown has 5.7% more Sunny Days than Cos Cob.
- On the BestPlaces comfort index, Williamstown scores 8.5% worse than Cos Cob
 Cos Cob, CTWilliamstown, MAUnited States
 Rainfall  Unlock4438
 Snowfall30  Unlock28
 Precipitation  Unlock130106
 Sunny175  Unlock205
 Avg. July High  Unlock8086
 Avg. Jan. Low21  Unlock22
 Comfort Index (higher=better)  Unlock6.57
 UV Index3.4  Unlock4.3
 Elevation  Unlock6822443
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