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National Weather Service Forecast
Forecast issued at 4:00 pm EDT May 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 201 PM EDT Mon May 18 2026 .WHAT HAS CHANGED... Continued to tweak Monday/Tuesday temperatures slightly downward from blended solution. Increased precip/thunderstorm chances for Tuesday afternoon from blended solutions, with only slight change from previous forecast.
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4    D A Y    F O R E C A S T    A T    A    G L A N C E
 
Tonight

Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, with a low around 69. South wind 5 to 13 mph. 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 Cloudy
 Tuesday

Tuesday: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Southwest wind 10 to 17 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny
then Chance
T-storms
 Tuesday
Night
Tuesday Night: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 5am, then showers after 5am. Low around 63. Southwest wind 6 to 11 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 Wednesday

Wednesday: Showers before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a slight chance of showers after 2pm. High near 73. North wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 50. Northeast wind around 10 mph.
Mostly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 70.
Mostly Sunny

 Thursday
Night
Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Partly Cloudy
then Chance
Showers
 Friday

Friday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 75. Chance of precipitation is 90%.
Showers

 Friday
Night
Friday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 62. Chance of precipitation is 80%.
Showers
 
Lo 69 °F Hi 89 °F Lo 63 °F Hi 73 °F Lo 50 °F Hi 70 °F Lo 53 °F Hi 75 °F Lo 62 °F
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Tonight through Sunday Night
 
  Tonight

Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, with a low around 69. South wind 5 to 13 mph. 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 Cloudy
   Lo 69 °F
 
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, with a low around 69. South wind 5 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. 		 
 
  Tuesday

Tuesday: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Southwest wind 10 to 17 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny
then Chance
T-storms
 		  Hi 89 °F
 
A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Southwest wind 10 to 17 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. 		  Tuesday
Night
Tuesday Night: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 5am, then showers after 5am. Low around 63. Southwest wind 6 to 11 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 		  Lo 63 °F
 
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 5am, then showers after 5am. Low around 63. Southwest wind 6 to 11 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. 		 
 
  Wednesday

Wednesday: Showers before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a slight chance of showers after 2pm. High near 73. North wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 		  Hi 73 °F
 
Showers before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a slight chance of showers after 2pm. High near 73. North wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. 		  Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 50. Northeast wind around 10 mph.
Mostly Cloudy

 		  Lo 50 °F
 
Mostly cloudy, with a low around 50. Northeast wind around 10 mph. 		 
 
  Thursday

Thursday: Mostly sunny, with a high near 70.
Mostly Sunny

 		  Hi 70 °F
 
Mostly sunny, with a high near 70. 		  Thursday
Night
Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Partly Cloudy
then Chance
Showers
 		  Lo 53 °F
 
A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%. 		 
 
  Friday

Friday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 75. Chance of precipitation is 90%.
Showers

 		  Hi 75 °F
 
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 75. Chance of precipitation is 90%. 		  Friday
Night
Friday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 62. Chance of precipitation is 80%.
Showers

 		  Lo 62 °F
 
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 62. Chance of precipitation is 80%. 		 
 
  Saturday   Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.   Saturday Night   A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.  
 
  Sunday   A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.   Sunday Night   A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.  
 
 
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