New Castle, DE has a humid subtropical climate with hot and humid summers and mild winters. It experiences four distinct seasons each year, with the warmest temperatures in July and August, with average highs reaching into the mid 80s. Winter months bring cooler temperatures, although snowfall is rare. Rainfall is fairly evenly distributed throughout the year, making it an ideal spot for outdoor activities in all seasons.
New Castle, Delaware gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.
New Castle averages 12 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in New Castle. The US average is 205 sunny days.
New Castle gets some kind of precipitation, on average, 108 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 87 degrees
Winter Low: the January low is 24
Rain: averages 45 inches of rain a year
Snow: averages 12 inches of snow a year