Marine Weather Net

New Castle, DE Weather Forecast




New Castle, Delaware

 Lat: 39.66N, Lon: 75.57W

Current Conditions Updated: 151 AM EST THU JAN 22 2026

Overcast
Temp: 40°F
  • Humidity:
  • 46%
  • Winds:
  • 7 MPH SSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.07 in.
  • Dewpoint:
  • 21°F
  • Heat index:
  • 40°F

  • Sunrise:
  • 7:17 AM EST
  • Sunset:
  • 5:08 PM EST
  • Moonrise:
  • 9:22 AM EST
  • Moonset:
  • 9:23 PM EST

TONIGHT

PARTLY CLOUDY
Lo: 35°F

THURSDAY

PARTLY SUNNY
Hi: 49°F
Lo: 25°F

FRIDAY

PARTLY SUNNY
Hi: 39°F
Lo: 11°F

SATURDAY

MOSTLY CLOUDY
Hi: 20°F
Lo: 13°F
Weather Forecast In Detail:
Forecast Issued: 651 PM EST Wed Jan 21 2026

Tonight...Mostly cloudy this evening, then becoming partly cloudy. Not as cool. Near steady temperature in the mid 30s. South winds 5 to 10 mph with gusts up to 20 mph.
Thursday...Sunny in the morning, then becoming partly sunny. Highs in the upper 40s. Temperature falling into the lower 40s in the afternoon. West winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night...Partly cloudy. Cold with lows in the mid 20s. Northwest winds around 5 mph.
Friday...Partly sunny. Highs in the upper 30s. West winds 10 to 15 mph.
Friday Night...Mostly cloudy. Colder with lows around 11. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 2 below.
Saturday...Mostly cloudy. Much colder with highs around 20. Wind chill values as low as 5 below in the morning.
Saturday Night...Snow. Little or no snow accumulation. Cold with lows 10 to 15. Chance of snow 90 percent.
Sunday...Snow, a chance of freezing rain and sleet. Cold with highs in the lower 20s. Chance of precipitation near 100 percent.
Sunday Night...Snow likely. Cold. Near steady temperature around 20. Chance of snow 70 percent.
Monday...Partly sunny. A chance of snow in the morning. Cold with highs in the mid 20s. Chance of snow 50 percent.
Monday Night...Partly cloudy in the evening, then becoming mostly clear. Cold with lows around 10 above. Wind chill values as low as 5 below.
Tuesday...Sunny, cold with highs in the lower 20s. Wind chill values as low as 5 below in the morning.
Tuesday Night...Partly cloudy. Cold with lows around 10 above.
Wednesday...Partly sunny. Cold with highs in the upper 20s.
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