National Weather Service Forecast for: Harrington DE
Issued by: National Weather Service Philadelphia, PA
Updated: 4:09 pm EDT Sep 12, 2026
 
Overnight

Overnight: Showers and possibly a thunderstorm. Low around 70. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers


 Sunday

Sunday: Showers and thunderstorms, mainly before 11am. Patchy fog between 7am and 8am. High near 84. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers and
Patchy Fog
then Slight
Chance
T-storms
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 69. Calm wind becoming southwest around 5 mph after midnight.
Partly Cloudy


 Monday

Monday: Mostly sunny, with a high near 78. North wind 10 to 15 mph.
Mostly Sunny


 Monday
Night
Monday Night: Mostly clear, with a low around 56. North wind 5 to 10 mph.
Mostly Clear


 Tuesday

Tuesday: Sunny, with a high near 77.
Sunny


 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 58.
Mostly Clear


 Wednesday

Wednesday: Sunny, with a high near 79.
Sunny


 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 61.
Mostly Clear
Lo 70 °F Hi 84 °F Lo 69 °F Hi 78 °F Lo 56 °F Hi 77 °F Lo 58 °F Hi 79 °F Lo 61 °F

 

Overnight
 
 Showers and possibly a thunderstorm. Low around 70. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
 
 Showers and thunderstorms, mainly before 11am. Patchy fog between 7am and 8am. High near 84. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 Partly cloudy, with a low around 69. Calm wind becoming southwest around 5 mph after midnight.
Monday
 
 Mostly sunny, with a high near 78. North wind 10 to 15 mph.
Monday Night
 
 Mostly clear, with a low around 56. North wind 5 to 10 mph.
Tuesday
 
 Sunny, with a high near 77.
Tuesday Night
 
 Mostly clear, with a low around 58.
Wednesday
 
 Sunny, with a high near 79.
Wednesday Night
 
 Mostly clear, with a low around 61.
Thursday
 
 Sunny, with a high near 83.
Thursday Night
 
 Mostly clear, with a low around 64.
Friday
 
 Mostly sunny, with a high near 84.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Saturday
 
 Partly sunny, with a high near 80.

 

Forecast from NOAA-NWS for Harrington DE.