Marine Weather Net

New Castle, DE Weather Forecast




New Castle, Delaware

 Lat: 39.66N, Lon: 75.57W

Current Conditions Updated: 251 PM EDT MON AUG 24 2026

Mostly Cloudy
Temp: 78°F
  • Humidity:
  • 51%
  • Winds:
  • 8 MPH W
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.95 in.
  • Dewpoint:
  • 59°F
  • Heat index:
  • 79°F

  • Sunrise:
  • 6:21 AM EDT
  • Sunset:
  • 7:44 PM EDT
  • Moonrise:
  • 6:06 PM EDT
  • Moonset:
  • 2:30 AM EDT

TODAY

SUNNY

Hi: 81°F
Lo: 61°F

TUESDAY

SUNNY

Hi: 81°F
Lo: 61°F

WEDNESDAY

SUNNY

Hi: 85°F
Lo: 67°F

THURSDAY

PARTLY SUNNY
Hi: 85°F
Lo: 69°F
Precip: 70%
Weather Forecast In Detail:
Forecast Issued: 400 AM EDT Mon Aug 24 2026

Today...Sunny. Highs in the lower 80s. West winds 5 to 10 mph.
Tonight...Mostly clear. Lows in the lower 60s. Northwest winds around 5 mph.
Tuesday...Sunny. Highs in the lower 80s. West winds 5 to 10 mph.
Tuesday Night...Mostly clear. Lows in the lower 60s. West winds around 5 mph in the evening, becoming light and variable.
Wednesday...Sunny, hot with highs in the mid 80s. Northeast winds around 5 mph, becoming south around 5 mph in the afternoon.
Wednesday Night...Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent.
Thursday...Partly sunny with a chance of showers in the morning, then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Hot with highs in the mid 80s. Chance of rain 70 percent.
Thursday Night...A chance of thunderstorms in the evening. Showers likely. Lows in the upper 60s. Chance of rain 70 percent.
Friday...Partly sunny. A chance of showers in the afternoon. Hot with highs in the mid 80s. Chance of rain 40 percent.
Friday Night...Partly cloudy. A chance of showers in the evening. Lows in the upper 60s. Chance of rain 40 percent.
Saturday...Sunny, hot with highs in the mid 80s.
Saturday Night...Mostly clear. Lows in the upper 60s.
Sunday...Mostly sunny. A chance of showers in the afternoon. Hot with highs in the mid 80s. Chance of rain 30 percent.
SHARE THIS PAGE: