Weather forecast for 10 daysNew Castle, DE

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 54°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 18mphN 358°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:14 am EDT
  • Sunset: 6:20 pm EDT
  • ▼
On Saturday, in New Castle, clear skies with only minor cloud interruptions are in the outlook.
The temperature is forecasted to vary between a maximum of a crisp 53.6°F and a minimum of an icy 37.4°F.
Today, the forecast high deviates from October's norm and tracks November's average temperature of 53.2°F.
Sunrise was at 7:14 am and sunset will be at 6:20 pm; the daylight will last for 11h and 5min.

Sunday Oct 18, 2026

  • 61°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNNE 27°
  • Humidity: 45%
  • UV index: 4
  • Sunrise: 7:15 am EDT
  • Sunset: 6:18 pm EDT
  • ▼
On Sunday, October 18, conditions remain stable and sunny, with little cloud presence.
The temperature is expected to oscillate between a maximum of a comfortable 60.8°F and a minimum of a wintry 41°F.
Tomorrow's forecasted high will be relatively lower than the typical October high of 64.8°F.
Sunrise will be at 7:15 am and sunset at 6:18 pm; tomorrow's daylight will last for 11h and 3min.

10-day overview

Daily temperatures

Warmest day: Tuesday 72°C.
Coldest day: today 54°C.

Chance of precipitation

Highest chance: Sunday 25.10. 31%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 54°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 18mphN 358°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:14 am EDT
  • Sunset: 6:20 pm EDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 61°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNNE 27°
  • Humidity: 45%
  • UV index: 4
  • Sunrise: 7:15 am EDT
  • Sunset: 6:18 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphNNE 18°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:16 am EDT
  • Sunset: 6:17 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 14mphNNE 15°
  • Humidity: 44%
  • UV index: 4
  • Sunrise: 7:17 am EDT
  • Sunset: 6:16 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 64°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 14mphNNE 26°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:18 am EDT
  • Sunset: 6:14 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 70°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 12mphN 1°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:20 am EDT
  • Sunset: 6:13 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 66°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 12mphNNE 16°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:21 am EDT
  • Sunset: 6:12 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 63°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 11mphNNE 24°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:22 am EDT
  • Sunset: 6:10 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 66°F
  • 46°F
AM Showers
AM Showers
  • Precip. probability: 31%
  • Precipitation: 0.04"
  • Wind: 11mphN 4°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 7:23 am EDT
  • Sunset: 6:09 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 10mphNNW 348°
  • Humidity: 66%
  • UV index: 4
  • Sunrise: 7:24 am EDT
  • Sunset: 6:08 pm EDT
  • ▼
Looking ahead, conditions suggest a period of primarily bright and occasionally gloomy and wet weather is anticipated.
With a probability of 31%, rainfall is predicted only for next Sunday. Predicted precipitation will be minimal at 0.04".
Significant changes in temperature are expected in the upcoming days. The maximum temperature will vary between 53.6°F and 71.6°F, while the nightly low temperatures will show also a considerable swing, as nighttime lows are forecast to fall between 37.4°F and 50°F.
With the highest temperature of 71.6°F, Tuesday will be the warmest day; today is the coldest day, with a maximum temperature of 53.6°F.
Updated: Oct 17, 2026 @ 17:48:32 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, in New Castle, sun-filled skies will remain for most of the day.

Today, the maximum temperature will be 53.6°F, while the minimum temperature will be 37.4°F.
Today, the highest temperature will be uncommonly lower than the average maximum of 64.8°F in October. The lowest temperature today will be also noticeably lower than the average low of 50.4°F.

On Saturday, in New Castle, sunrise was at 7:14 am and sunset will be at 6:20 pm (EDT).

In New Castle, today, there will be 11h and 5min of daylight.

On Sunday, in New Castle, sunshine and minimal clouds are in the outlook.

Tomorrow, the maximum temperature will be 60.8°F, while the minimum temperature will be 41°F.
The maximum temperature tomorrow will be relatively lower than the average highest temperature in October. The lowest temperature will be uncommonly lower than the average low of 50.4°F.

On Sunday, in New Castle, sunrise will be at 7:15 am and sunset at 6:18 pm (EDT).

In New Castle, the length of the day tomorrow will be 11h and 3min.