Ohio Weather Alert: Heat Index to Hit 103° by 3 P.M. Wednesday, July 30th — Hydration Critical in Wilmington

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Wilmington, Ohio – Wilmington residents face a dangerous summer heat wave on Wednesday, July 30th, as heat index values soar past 100°, prompting a Heat Advisory through 8 p.m.

According to the National Weather Service in Wilmington, hot temperatures and oppressive humidity will blanket southeast Indiana, northeast Kentucky, and southwest Ohio. In Wilmington, the heat index is expected to reach 103°, with actual air temps near 89° and minimal breeze to offer relief.

Local roads like U.S. Route 68 and State Route 73 could become hazardous as pavement temperatures spike. Outdoor work and prolonged exposure could lead to heat exhaustion or even heat stroke. Officials urge residents to stay hydrated, avoid strenuous activity during peak heat hours, and check on elderly neighbors.

Thunderstorms may begin developing by late Wednesday evening, offering a brief reprieve. These storms could bring locally heavy rain and gusty winds, especially into Wednesday night and Thursday, raising the potential for flash flooding in low-lying areas.

Looking ahead, temperatures moderate slightly into the weekend, with highs in the low 80s Thursday through Saturday. Friday brings the highest rain chances, with a 50% likelihood of storms and possible downpours. Dry and mild weather is expected to return Sunday into Monday.


🔎 Wilmington 5-Day Forecast: July 30 – August 4

  • Wednesday, July 30: Sunny and hot. High near 89°. Slight chance of PM storms.
  • Thursday: Showers/storms likely after 1 p.m. High 81°. Some storms may be strong.
  • Friday: Mostly sunny early. Storms possible after 2 p.m. High near 78°.
  • Saturday: Mostly clear and dry. High 76°. Low humidity.
  • Sunday: Continued dry and sunny. High 80°. Low near 60°.
  • Monday, August 4: Slight chance of showers. High near 81°.

Stay weather aware and check local alerts for updates on storm timing and heat impacts.