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Plan your week in New Castle County with our detailed 7-Day Weather Forecast. Access reliable daily temperature highs and lows, rain chances, and weekly weather pattern summaries.

New Castle County 7-Day Weather Forecast

Sunday, Oct 25, 2026

Nighttime
43°F

Sunny / Clear

Feels like 43°F

Humidity

82%

Wind Speed

1.8 mph

Precipitation

0 in

Pressure

1035 hPa

UV Index

0

Visibility

10 mi

Cloud Cover

0%

Dew Point

34°F

7-Day Weather Forecast

Today

Oct 25

Sunny / Clear
65°H
40°L
0%

Mon

Oct 26

Sunny / Clear
68°H
43°L
0%

Tue

Oct 27

Sunny / Clear
64°H
51°L
0%

Wed

Oct 28

Sunny / Clear
62°H
45°L
0%

Thu

Oct 29

Sunny / Clear
68°H
49°L
0%

Fri

Oct 30

Sunny / Clear
73°H
52°L
0%

Sat

Oct 31

Sunny / Clear
63°H
49°L
0%

24-Hour Forecast

5 AM

43°

0%

6 AM

42°

0%

7 AM

42°

0%

8 AM

41°

0%

9 AM

41°

0%

10 AM

40°

0%

11 AM

40°

0%

12 PM

41°

0%

1 PM

46°

0%

2 PM

53°

0%

3 PM

58°

0%

4 PM

61°

0%

5 PM

63°

0%

6 PM

64°

0%

7 PM

65°

0%

8 PM

64°

0%

9 PM

64°

0%

10 PM

58°

0%

11 PM

55°

0%

12 AM

52°

0%

1 AM

50°

0%

2 AM

48°

0%

3 AM

47°

0%

4 AM

46°

0%

Air Quality (AQI)

74Moderate

Air quality is acceptable. However, there may be a risk for some people.

PM2.5

44 µg/m³

PM10

46 µg/m³

Sun & Moon Phase

Sunrise

6:00 AM

Sunset

8:00 PM

Moon Phase

Waxing Gibbous

Waxing Gibbous

Wind Conditions & Storm Tracking

Wind Direction

22.2° NNE

Sustained Wind

1.8 mph

Wind Gusts

1.8 mph

7-Day Temp Range

Week's Hottest

73°F

Max Rain Prob

0%

Expected 7-Day Swings

40°
73°

High and low limits expected over the next week.

Extended Local Forecasts

14 Day Weather Forecast7 Day Weather ForecastHourly Weather Tracker

Location View

New Castle County · 39.65°N, 75.63°W
Radar Page
Coordinates39.6458°N, 75.6258°W
Elevationm
TimezoneAmerica/New_York

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Safety & Environmental Index

MetricValueStatus / Interpretation
Air Quality (AQI)74Moderate
UV Index0Low Risk
Visibility10 milesClear

Frequently Asked Questions

The 7-day forecast for New Castle County includes comprehensive daily weather summaries, max/min temperatures, and expected rainfall to keep you prepared for the week.

About New Castle County Climate & Weather

Weather forecast for New Castle County is powered by high-resolution weather models using open-source infrastructure. Check current temperatures, rain radar graphs, hourly wind speeds, humidity values, and ultraviolet indexes directly from our weather tracking console.

Meteorological Data: Weather data for this area is aggregated from global and regional forecast models (GFS, HRRR, ERA5) and updated continuously every hour.