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National Weather Service Forecast
Forecast issued at 4:00 am EDT Aug 20, 2026 by the National Weather Service Wilmington, OH
Hazardous Weather Outlook

Forecast Discussion for ILN NWS Office Area Forecast Discussion National Weather Service Wilmington OH 234 AM EDT Thu Aug 20 2026 .WHAT HAS CHANGED... No significant changes.
See Full Discussion Here
4    D A Y    F O R E C A S T    A T    A    G L A N C E
 
Overnight

Overnight: A chance of showers.  Cloudy, with a low around 66. Calm wind.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

Thursday

Thursday: A chance of showers, with thunderstorms also possible after 4pm.  Mostly cloudy, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.  Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Chance
T-storms
Thursday
Night
Thursday Night: A chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 64. Light northeast wind.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Mostly Clear
Friday

Friday: Sunny, with a high near 81. Light north wind.
Sunny

Friday
Night
Friday Night: Mostly clear, with a low around 63. Calm wind.
Mostly Clear

Saturday

Saturday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 81. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny
then Chance
T-storms
Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 59. Chance of precipitation is 30%.
Chance
T-storms then
Mostly Clear
Sunday

Sunday: Sunny, with a high near 77.
Sunny

Sunday
Night
Sunday Night: Mostly clear, with a low around 57.
Mostly Clear

 
Lo 66 °F Hi 81 °F Lo 64 °F Hi 81 °F Lo 63 °F Hi 81 °F Lo 59 °F Hi 77 °F Lo 57 °F
48 Hour Temperature and Dew Point Forecast
DEW POINT: 60-64=Slightly Humid, 65-69=Humid, 70-74=Very Humid, 75-79=Oppressively Humid, 80 & Greater=Very Oppressively Humid
48 hour temperature forecast
48 Hour Precipitation Potential and Sky Cover Forecast
48 hour temperature forecast
48 Hour Rain and Thunder Forecast
48 hour precipitation forecast
48 Hour Snow Freezing Rain and Sleet Forecast
48 hour forecast
48 Hour Wind Forecast
48 hour temperature forecast
 
7 DAY HOURLY FORECAST TABLES & GRAPHS
 
Overnight through Tuesday Night
 
  Overnight

Overnight: A chance of showers.  Cloudy, with a low around 66. Calm wind.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

  Lo 66 °F
 
A chance of showers. Cloudy, with a low around 66. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
 
 
  Thursday

Thursday: A chance of showers, with thunderstorms also possible after 4pm.  Mostly cloudy, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.  Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Chance
T-storms
  Hi 81 °F
 
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  Thursday
Night
Thursday Night: A chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 64. Light northeast wind.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Mostly Clear
  Lo 64 °F
 
A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 64. Light northeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
 
 
  Friday

Friday: Sunny, with a high near 81. Light north wind.
Sunny

  Hi 81 °F
 
Sunny, with a high near 81. Light north wind.
  Friday
Night
Friday Night: Mostly clear, with a low around 63. Calm wind.
Mostly Clear

  Lo 63 °F
 
Mostly clear, with a low around 63. Calm wind.
 
 
  Saturday

Saturday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 81. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny
then Chance
T-storms
  Hi 81 °F
 
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
  Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 59. Chance of precipitation is 30%.
Chance
T-storms then
Mostly Clear
  Lo 59 °F
 
A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 59. Chance of precipitation is 30%.
 
 
  Sunday

Sunday: Sunny, with a high near 77.
Sunny

  Hi 77 °F
 
Sunny, with a high near 77.
  Sunday
Night
Sunday Night: Mostly clear, with a low around 57.
Mostly Clear

  Lo 57 °F
 
Mostly clear, with a low around 57.
 
 
  Monday   Sunny, with a high near 77.   Monday Night   Mostly clear, with a low around 57.  
 
  Tuesday   Sunny, with a high near 80.   Tuesday Night   Partly cloudy, with a low around 60.  
 
 
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