New Castle County, DE Weather


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United States / Delaware / / New Castle County / Cities / Zip Codes

The most pleasant months of the year for New Castle County are September, June and May. In New Castle County, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for New Castle County with an average high temperature of 86.3°, which ranks it as cooler than most places in Delaware. February is the snowiest month in New Castle County with 5.2 inches of snow, and 4 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.

Today's Weather - New Castle, DE

2 AM PST

Clear

58°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
OvernightClear58° / 76°NW 5 mph
Wednesday NightChance Showers And Thunderstorms57° / 74°NW 5 mph
Thursday NightMostly Clear53° / 75°N 5 to 10 mph
Friday NightClear53° / 80°NW 5 to 10 mph
Saturday NightPartly Cloudy57° / 81°SW 0 to 5 mph
Sunday NightMostly Cloudy then Slight Chance Showers And Thunderstorms61° / 80°S 5 mph
Monday NightSlight Chance Showers And Thunderstorms62° / 83°E 5 to 10 mph

Weather Highlights

Summer High: the July high is around 86 degrees
Winter Low: the January low is 24
Rain: averages 45 inches of rain a year
Snow: averages 14 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the New Castle County area is 8.4 (10=best), which means it is more comfortable than most places in Delaware.

8.4 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January40° 24°
February44° 26°
March52° 33°
April64° 42°
May73° 52°
June82° 62°
July86° 67°
August85° 65°
September77° 58°
October66° 46°
November56° 37°
December45° 28°
Hot, Freezing, Rainy, Snowy Days: New Castle
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January025103
February02192
March014101
April02110
May10110
June40100
July80100
August5080
September1080
October0180
November0990
December021101

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

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