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National Weather Service Forecast
Forecast issued at 4:00 pm EDT Aug 18, 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 233 PM EDT Tue Aug 18 2026 .WHAT HAS CHANGED... Added a mention for storm potential on Saturday.
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
 
Tonight

Tonight: Mostly clear, with a low around 62. Light and variable wind.
Mostly Clear

 Wednesday

Wednesday: A chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Partly Sunny
then Chance
T-storms
 Wednesday
Night
Wednesday Night: Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Thursday

Thursday: A chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 80. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Slight Chance
T-storms
 Thursday
Night
Thursday Night: Mostly clear, with a low around 60. Northeast wind around 5 mph becoming calm after midnight.
Mostly Clear

 Friday

Friday: Mostly sunny, with a high near 81.
Mostly Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 61.
Mostly Clear

 Saturday

Saturday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Sunny then
Chance
T-storms
 Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Chance
T-storms then
Mostly Clear
 
Lo 62 °F Hi 79 °F Lo 64 °F Hi 80 °F Lo 60 °F Hi 81 °F Lo 61 °F Hi 80 °F Lo 59 °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
 
Tonight through Monday Night
 
  Tonight

Tonight: Mostly clear, with a low around 62. Light and variable wind.
Mostly Clear

   Lo 62 °F
 
Mostly clear, with a low around 62. Light and variable wind. 		 
 
  Wednesday

Wednesday: A chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Partly Sunny
then Chance
T-storms
 		  Hi 79 °F
 
A chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. 		  Wednesday
Night
Wednesday Night: Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 		  Lo 64 °F
 
Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. 		 
 
  Thursday

Thursday: A chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 80. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Slight Chance
T-storms
 		  Hi 80 °F
 
A chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 80. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. 		  Thursday
Night
Thursday Night: Mostly clear, with a low around 60. Northeast wind around 5 mph becoming calm after midnight.
Mostly Clear

 		  Lo 60 °F
 
Mostly clear, with a low around 60. Northeast wind around 5 mph becoming calm after midnight. 		 
 
  Friday

Friday: Mostly sunny, with a high near 81.
Mostly Sunny

 		  Hi 81 °F
 
Mostly sunny, with a high near 81. 		  Friday
Night
Friday Night: Mostly clear, with a low around 61.
Mostly Clear

 		  Lo 61 °F
 
Mostly clear, with a low around 61. 		 
 
  Saturday

Saturday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Sunny then
Chance
T-storms
 		  Hi 80 °F
 
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%. 		  Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, 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. Partly cloudy, with a low around 59. Chance of precipitation is 30%. 		 
 
  Sunday   Sunny, with a high near 78.   Sunday Night   Mostly clear, with a low around 57.  
 
  Monday   Mostly sunny, with a high near 79.   Monday Night   Partly cloudy, with a low around 61.  
 
 
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