Weather forecast for 10 days
New Castle, DE

Weather forecast for the weekend

Saturday, Jul 19.

Partly Cloudy
5:49 am

8:28 pm
EDT
Partly Cloudy
88°F / 73°F
  • Wind: 8mph ESE
  • Humidity: 65%
  • Precip. probability: 10%
  • Precipitation: 0.04"
  • UV index: 9
On Saturday, in New Castle, sunlight and clouds will take turns dominating the sky.
Minimal precipitation is predicted. Temperature span will be from a high of a humid 87.8°F to a low of a moderately hot 73.4°F.
The high is predicted to coincide with July's normal of 84.9°F.
Sunrise will be at 5:49 am and sunset at 8:28 pm; the daylight will last for 14h and 39min.

Sunday, Jul 20.

Scattered Thunderstorms
5:49 am

8:27 pm
EDT
Scattered Thunderstorms
86°F / 73°F
  • Wind: 9mph SSW
  • Humidity: 81%
  • Precip. probability: 48%
  • Precipitation: 0.24"
  • UV index: 9
On Sunday, July 20, scattered thunderstorms are likely, with brief breaks between the stormy periods.
The likelihood of rainfall is low, and light precipitation is forecasted. The temperature is expected to vary between a maximum of a humid 86°F and a minimum of a temperate 73.4°F.
The predicted peak temperature will reflect the average July high of 84.9°F.
Sunrise will be at 5:49 am and sunset at 8:27 pm; the daylight will last for 14h and 37min.

Frequently asked questions

What is the weather forecast for New Castle for Saturday?
On Saturday, in New Castle, expect partly sunny skies with periods of cloudiness.
Will it rain on Saturday?
On Saturday, there is a low chance of minimal precipitation in New Castle.
What will be the maximum temperature on Saturday?
On Saturday, the maximum temperature will be 87.8°F, while the minimum temperature will be 73.4°F.
What is the weather forecast for New Castle for Sunday?
On Sunday, scattered thunderstorms are expected, bringing gusty winds and heavy rain at times.
Will it rain on Sunday?
Light precipitation of 0.24" is anticipated on Sunday. The likelihood of rainfall is 48%.
What will be the highest temperature in New Castle on Sunday?
On Sunday, the highest temperature will be 86°F, while the lowest temperature will be 73.4°F.
What is the weather forecast for New Castle for the next ten days?
In New Castle, a combination of stormy, cloudy and rain-filled weather is predicted for the next ten days.
Will it rain in the next ten days in New Castle?
Rainfall is anticipated on Monday, Wednesday, Friday, Sunday through next Wednesday in New Castle. With light precipitation of 0.35", Wednesday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 86°F and 93.2°F, while the minimum temperature will be between 71.6°F and 77°F.
Taking the humidity into consideration, the maximum feel-like temperature will vary between 95°F and 116.6°F.
What will be the hottest and the coldest days?
The hottest day will be Thursday, with a maximum of 93.2°F. The coldest days will be Sunday, next Tuesday and Wednesday, with a maximum of 86°F.

Long-term weather forecast

MonJul 14.
  • min.
  • 73°F
Thunderstorms Early
Thunderstorms Early
  • Wind: 4mph ESE
  • Humidity: 99%
  • UV index: 0
  • Precip. probability: 99%
  • Precipitation: 0.24"
  • 5:45 am 8:31 pm EDT
TueJul 15.
  • 88°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph NW
  • Humidity: 76%
  • UV index: 9
  • Precip. probability: 15%
  • Precipitation: 0"
  • 5:46 am 8:30 pm EDT
WedJul 16.
  • 88°F
  • 75°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 10mph SSW
  • Humidity: 80%
  • UV index: 6
  • Precip. probability: 50%
  • Precipitation: 0.35"
  • 5:46 am 8:30 pm EDT
ThuJul 17.
  • 93°F
  • 77°F
Partly Cloudy
Partly Cloudy
  • Wind: 12mph SW
  • Humidity: 71%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:47 am 8:29 pm EDT
FriJul 18.
  • 88°F
  • 72°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 9mph WNW
  • Humidity: 69%
  • UV index: 8
  • Precip. probability: 65%
  • Precipitation: 0.12"
  • 5:48 am 8:28 pm EDT
SatJul 19.
  • 88°F
  • 73°F
Partly Cloudy
Partly Cloudy
  • Wind: 8mph ESE
  • Humidity: 65%
  • UV index: 9
  • Precip. probability: 10%
  • Precipitation: 0.04"
  • 5:49 am 8:28 pm EDT
SunJul 20.
  • 86°F
  • 73°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 9mph SSW
  • Humidity: 81%
  • UV index: 9
  • Precip. probability: 48%
  • Precipitation: 0.24"
  • 5:49 am 8:27 pm EDT
MonJul 21.
  • 88°F
  • 73°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 8mph NW
  • Humidity: 68%
  • UV index: 9
  • Precip. probability: 42%
  • Precipitation: 0.16"
  • 5:50 am 8:26 pm EDT
TueJul 22.
  • 86°F
  • 72°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph ESE
  • Humidity: 68%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0.28"
  • 5:51 am 8:25 pm EDT
WedJul 23.
  • 86°F
  • 73°F
Showers
Showers
  • Wind: 9mph SE
  • Humidity: 71%
  • UV index: 9
  • Precip. probability: 38%
  • Precipitation: 0.12"
  • 5:52 am 8:25 pm EDT
During the ten-day period, stormy, overcast and rainy weather is anticipated.
Rainfall is forecasted for Monday, Wednesday, Friday, Sunday through next Wednesday.
In the coming days, the maximum temperature will range between 86°F and 93.2°F, while the overnight low will be nearly unchanged, as the minimum temperature is expected to range between 71.6°F and 77°F.
Thursday is expected to be the hottest, reaching up to 93.2°F; the coldest days will be Sunday, next Tuesday and Wednesday, with a maximum of 86°F.
Including the humidity's impact, the maximum feel-like temperature may increase significantly and range between a steamy 95°F and a dangerously hot 116.6°F.
July delivers the warmest conditions in New Castle, marked by average highs of 84.9°F and lows of 68.5°F.
Updated: Jul 15, 2025 @ 00:13:41 UTC
Published by: Weather U.S. | About Us
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