Weather World
New Castle County, DE Official WebsiteNew Castle County, DE 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
New Castle County, DE Weather Forecast
New Castle County, DE Weather Forecast Date: 400 AM EDT Sat Sep 05 2026
The area/counties/county of: New Castle, including the city of Wilmington.or toggle through each period.
Today... Mostly cloudy this morning, then becoming partly sunny. Highs in the lower 80s. North winds around 5 mph.
Tonight... Mostly clear. Lows in the lower 60s. North winds around 5 mph.
Sunday... Mostly sunny. Highs around 80. Northeast winds 5 to 10 mph.
Sunday Night... Partly cloudy in the evening, then clearing. Lows around 60. East winds around 5 mph.
Labor Day... Sunny. Highs around 80. North winds around 5 mph.
Monday Night... Mostly clear. Lows around 60.
Tuesday... Mostly sunny. Highs in the lower 80s.
Tuesday Night... Partly cloudy. Lows in the lower 60s.
Wednesday... Mostly sunny. Hot with highs in the mid 80s.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s.
Thursday... Mostly sunny. Hot with highs in the mid 80s.
Thursday Night... Partly cloudy. Lows in the lower 60s.
POP = Probability of Precipitation
New Castle County Radar Loop
Use the map search tool if you want to place a location marker on the radar map...