| National Weather Service Forecast for:
New Castle DE Issued by: National Weather Service Philadelphia, PA |
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| Updated: 4:08 am EDT Jul 13, 2026 | ||||||||||||||||||
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| Today |
Sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon. |
| Tonight |
Mostly clear, with a low around 64. South wind around 5 mph. |
| Tuesday |
Sunny, with a high near 90. Southwest wind 5 to 10 mph. |
| Tuesday Night |
Clear, with a low around 70. Southwest wind around 10 mph. |
| Wednesday |
Sunny and hot, with a high near 97. West wind 5 to 10 mph. |
| Wednesday Night |
Partly cloudy, with a low around 75. |
| Thursday |
Mostly sunny, with a high near 92. |
| Thursday Night |
Mostly clear, with a low around 73. |
| Friday |
Sunny, with a high near 91. |
| Friday Night |
Partly cloudy, with a low around 72. |
| Saturday |
Mostly sunny, with a high near 89. |
| Saturday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%. |
| Sunday |
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%. |
Forecast from NOAA-NWS for New Castle DE.
