2026 Compare Cities Climate:
Black Diamond, WA vs New Castle, DE

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Highlights
- New Castle has 10.2% less rainy days than Black Diamond.
- New Castle has 29.5% more Sunny Days than Black Diamond.
- On the BestPlaces comfort index, New Castle scores 4.3% better than Black Diamond
 Black Diamond, WANew Castle, DEUnited States
 Rainfall  Unlock4538
 Snowfall5  Unlock28
 Precipitation  Unlock108106
 Sunny156  Unlock205
 Avg. July High  Unlock8786
 Avg. Jan. Low35  Unlock22
 Comfort Index (higher=better)  Unlock7.37
 UV Index2.6  Unlock4.3
 Elevation  Unlock102443
Reviews for Black Diamond    1 Reviews

Over 6 years ago

I felt safe, it was beautiful and everyone was so nice  More

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Reviews for New Castle    0 Reviews

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