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2026 Compare Cities Climate:
Castine, ME vs Groton, CT

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Highlights
- Groton has 0.6% more rainy days than Castine.
- Groton has 3.0% more Sunny Days than Castine.
- On the BestPlaces comfort index, Groton scores 10.9% better than Castine
 Castine, MEGroton, CTUnited States
 Rainfall  Unlock4838
 Snowfall63  Unlock28
 Precipitation  Unlock119106
 Sunny198  Unlock205
 Avg. July High  Unlock8086
 Avg. Jan. Low7  Unlock22
 Comfort Index (higher=better)  Unlock7.17
 UV Index2.9  Unlock4.3
 Elevation  Unlock792443
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Learn More About Castine, Maine
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Learn More About Groton, Connecticut
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