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National Weather Service Forecast
Forecast issued at 4:00 pm EDT Aug 19, 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 313 PM EDT Wed Aug 19 2026 .WHAT HAS CHANGED... Flood Watch issued for counties near and north of I-70 corridor for this afternoon into Thursday morning.
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
 
This
Afternoon
This Afternoon: A slight chance of showers and thunderstorms.  Partly sunny, with a high near 78. Southwest wind around 6 mph.  Chance of precipitation is 20%.
Slight Chance
T-storms
Tonight

Tonight: A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 2am, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 66. Light and variable wind.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely
Thursday

Thursday: A chance of showers before 8am.  Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers then
Mostly Sunny
Thursday
Night
Thursday Night: Partly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm  in the evening.
Partly Cloudy

Friday

Friday: Mostly sunny, with a high near 82. Light northeast wind.
Mostly Sunny

Friday
Night
Friday Night: Mostly clear, with a low around 62.
Mostly Clear

Saturday

Saturday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Mostly Sunny
then Chance
T-storms
Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Chance
T-storms then
Mostly Clear
Sunday

Sunday: Sunny, with a high near 79.
Sunny

 
Hi 78 °F Lo 66 °F Hi 81 °F Lo 63 °F Hi 82 °F Lo 62 °F Hi 82 °F Lo 60 °F Hi 79 °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
 
This Afternoon through Tuesday
 
  This
Afternoon
This Afternoon: A slight chance of showers and thunderstorms.  Partly sunny, with a high near 78. Southwest wind around 6 mph.  Chance of precipitation is 20%.
Slight Chance
T-storms
  Hi 78 °F
 
A slight chance of showers and thunderstorms. Partly sunny, with a high near 78. Southwest wind around 6 mph. Chance of precipitation is 20%.
 
 
  Tonight

Tonight: A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 2am, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 66. Light and variable wind.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely
  Lo 66 °F
 
A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 66. Light and variable wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
  Thursday

Thursday: A chance of showers before 8am.  Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers then
Mostly Sunny
  Hi 81 °F
 
A chance of showers before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
 
 
  Thursday
Night
Thursday Night: Partly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm  in the evening.
Partly Cloudy

  Lo 63 °F
 
Partly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.
  Friday

Friday: Mostly sunny, with a high near 82. Light northeast wind.
Mostly Sunny

  Hi 82 °F
 
Mostly sunny, with a high near 82. Light northeast wind.
 
 
  Friday
Night
Friday Night: Mostly clear, with a low around 62.
Mostly Clear

  Lo 62 °F
 
Mostly clear, with a low around 62.
  Saturday

Saturday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Mostly Sunny
then Chance
T-storms
  Hi 82 °F
 
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
 
 
  Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Chance
T-storms then
Mostly Clear
  Lo 60 °F
 
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
  Sunday

Sunday: Sunny, with a high near 79.
Sunny

  Hi 79 °F
 
Sunny, with a high near 79.
 
 
  Sunday Night   Mostly clear, with a low around 57.   Monday   Sunny, with a high near 79.  
 
  Monday Night   Partly cloudy, with a low around 59.   Tuesday   Mostly sunny, with a high near 81.  
 
 
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