New Castle Northwest Weather Today

New Castle Northwest is a small unincorporated community located in the state of Delaware, USA. It is situated in the northern part of the state, near the Maryland border. The climate in New Castle Northwest is a humid subtropical climate, with mild winters and hot, humid summers. The average temperature year-round is around 50 degrees Fahrenheit (10 degrees Celsius). The summer months can be quite hot and humid, with temperatures often reaching the mid-90s (around 35 degrees Celsius). During the winter months, temperatures can dip as low as the low 20s (around -5 degrees Celsius), with occasional snow and ice.