National Weather Service Forecast for: Harrington DE
Issued by: National Weather Service Philadelphia, PA
Updated: 3:18 pm EDT May 26, 2026
 
Tonight

Tonight: Showers likely and possibly a thunderstorm, mainly after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 64. South wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Cloudy
then Showers
Likely and
Patchy Fog
 Wednesday

Wednesday: Showers likely, with thunderstorms also possible after 5pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 81. West wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers and
Patchy Fog
then Showers
Likely
 Wednesday
Night
Wednesday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 64. West wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely then
Chance
Showers
 Thursday

Thursday: Cloudy through mid morning, then gradual clearing, with a high near 80. North wind 5 to 10 mph.
Gradual
Clearing

 Thursday
Night
Thursday Night: Mostly clear, with a low around 55. North wind around 5 mph.
Mostly Clear


 Friday

Friday: Sunny, with a high near 77.
Sunny


 Friday
Night
Friday Night: Mostly clear, with a low around 59.
Mostly Clear


 Saturday

Saturday: Mostly sunny, with a high near 77.
Mostly Sunny


 Saturday
Night
Saturday Night: Mostly clear, with a low around 54.
Mostly Clear
Lo 64 °F Hi 81 °F Lo 64 °F Hi 80 °F Lo 55 °F Hi 77 °F Lo 59 °F Hi 77 °F Lo 54 °F

 

Tonight
 
 Showers likely and possibly a thunderstorm, mainly after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 64. South wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 Showers likely, with thunderstorms also possible after 5pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 81. West wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 64. West wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
 
 Cloudy through mid morning, then gradual clearing, with a high near 80. North wind 5 to 10 mph.
Thursday Night
 
 Mostly clear, with a low around 55. North wind around 5 mph.
Friday
 
 Sunny, with a high near 77.
Friday Night
 
 Mostly clear, with a low around 59.
Saturday
 
 Mostly sunny, with a high near 77.
Saturday Night
 
 Mostly clear, with a low around 54.
Sunday
 
 Sunny, with a high near 73.
Sunday Night
 
 Partly cloudy, with a low around 55.
Monday
 
 Mostly sunny, with a high near 72.
Monday Night
 
 Partly cloudy, with a low around 54.
Tuesday
 
 Mostly sunny, with a high near 70.

 

Forecast from NOAA-NWS for Harrington DE.