Weather forecast for 10 daysNew Castle, PA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 63°F
  • 30°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 174°
  • Humidity: 42%
  • UV index: 4
  • Sunrise: 7:36 am EDT
  • Sunset: 6:36 pm EDT
  • ▼
On Sunday, October 18, sunny skies are in store, with excellent visibility.
Substantial temperature fluctuations from a high of a breezy 62.6°F to a low of a harsh 30.2°F are predicted.
The anticipated maximum temperature will closely reflect October's average high of 60.4°F.
Sunrise was at 7:36 am and sunset will be at 6:36 pm; the daylight will last for 11h and 0min.

10-day overview

Daily temperatures

Maximum temperature: 68°C.
Coldest day: today 63°C.

Chance of precipitation

Highest chance: Thursday 19%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 63°F
  • 30°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 174°
  • Humidity: 42%
  • UV index: 4
  • Sunrise: 7:36 am EDT
  • Sunset: 6:36 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 1mphNE 53°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:37 am EDT
  • Sunset: 6:35 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 6mphN 9°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:38 am EDT
  • Sunset: 6:33 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 68°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphNNE 28°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:39 am EDT
  • Sunset: 6:32 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 7mphN 353°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:40 am EDT
  • Sunset: 6:30 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 64°F
  • 34°F
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 5mphNE 43°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:42 am EDT
  • Sunset: 6:29 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 64°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphE 99°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:43 am EDT
  • Sunset: 6:27 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 64°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphSSE 163°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:44 am EDT
  • Sunset: 6:26 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphWNW 296°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:45 am EDT
  • Sunset: 6:25 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 66°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphN 5°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:46 am EDT
  • Sunset: 6:23 pm EDT
  • ▼
Weather models show that a combination of sun-filled and overcast weather is forecasted.
Rain is not anticipated in New Castle in the upcoming period.
The variation in maximum temperature will be negligible during the next few days. Highs will range from 62.6°F to 68°F, while the nightly low temperatures will show a considerable swing, as temperatures overnight will fluctuate from 30.2°F up to 42.8°F.
With a maximum temperature of 68°F, Monday through Wednesday and next Monday will be the warmest days; today is the coldest day, with a maximum temperature of 62.6°F.
Updated: Oct 18, 2026 @ 15:16:02 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in New Castle, sun-filled conditions are expected to persist.

Today, the maximum temperature will be 62.6°F, while the minimum temperature will be 30.2°F.
The maximum temperature will be in line with the average highest temperature of 60.4°F in October. The lowest temperature today will be noticeably lower than the average low of 44.2°F.

On Sunday, in New Castle, sunrise was at 7:36 am and sunset will be at 6:36 pm (EDT).

Today, the daylight will last for 11h and 0min.