National Weather Service Forecast for: Harrington DE
Issued by: National Weather Service Philadelphia, PA
Updated: 4:10 am EST Dec 18, 2025
 
Today

Today: Increasing clouds, with a high near 56. Light and variable wind becoming south 5 to 10 mph in the morning.
Increasing
Clouds

 Tonight

Tonight: Rain likely, then rain and possibly a thunderstorm after 1am. Temperature rising to around 58 by 4am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Slight Chance
Rain then
Rain and
Breezy
 Friday

Friday: Rain and thunderstorms before 10am, then rain between 10am and 1pm. Temperature falling to around 42 by 5pm. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Rain and
Breezy

 Friday
Night
Friday Night: Mostly clear, with a low around 26. West wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 45. Northwest wind around 5 mph becoming south in the afternoon.
Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 36.
Partly Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 51.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 24.
Mostly Clear

 Monday

Monday: Sunny, with a high near 38.
Sunny
Hi 56 °F Lo 49 °F⇑ Hi 59 °F⇓ Lo 26 °F Hi 45 °F Lo 36 °F Hi 51 °F Lo 24 °F Hi 38 °F

 

Today
 
 Increasing clouds, with a high near 56. Light and variable wind becoming south 5 to 10 mph in the morning.
Tonight
 
 Rain likely, then rain and possibly a thunderstorm after 1am. Temperature rising to around 58 by 4am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
 
 Rain and thunderstorms before 10am, then rain between 10am and 1pm. Temperature falling to around 42 by 5pm. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 Mostly clear, with a low around 26. West wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
 
 Sunny, with a high near 45. Northwest wind around 5 mph becoming south in the afternoon.
Saturday Night
 
 Partly cloudy, with a low around 36.
Sunday
 
 Mostly sunny, with a high near 51.
Sunday Night
 
 Mostly clear, with a low around 24.
Monday
 
 Sunny, with a high near 38.
Monday Night
 
 Mostly cloudy, with a low around 25.
Tuesday
 
 A chance of rain and snow. Mostly cloudy, with a high near 43. Chance of precipitation is 30%.
Tuesday Night
 
 Mostly cloudy, with a low around 36.
Wednesday
 
 Mostly sunny, with a high near 50.

 

Forecast from NOAA-NWS for Harrington DE.