New Castle is a city of approximately 5,400 people in Delaware, United States. Located in the Eastern Time Zone at 39.7°N latitude.
Expect a humid continental climate in New Castle: average highs of 87°F in midsummer, lows near 26°F in midwinter, and an annual mean of 56°F. Precipitation totals roughly 45 inches per year and 20 inches of snow, concentrated around June, with February typically the driest month.
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