Weather Alerts For Leo, IN

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THURSDAY # DETAILS -------------------- WHAT Dangerously hot conditions with heat index values of 100 to 105 expected, with isolated higher values possible. Daily high temperatures in the 90s. WHERE Portions of northern Indiana, southwest Michigan, and northwest Ohio. WHEN Until 8 PM EDT /7 PM CDT/ Thursday. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ADDITIONAL DETAILS Overnight lows in the mid-70s will offer limited relief from the heat. ISSUED AT Monday, June 29, 2026 at 1:42 PM EDT ISSUED BY National Weather Service Northern Indiana HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. # AREAS AFFECTED -------------------- Fulton IN, Henry, Northern Berrien, Wells, Adams, Allen IN, Allen OH, Blackford, Branch, Cass IN, Cass MI, De Kalb, Defiance, Eastern St. Joseph IN, Elkhart, Fulton OH, Grant, Hillsdale, Huntington, Jay, Lagrange, Marshall, Miami, Noble, Northern Kosciusko, Northern La Porte, Paulding, Pulaski, Putnam, Southern Berrien, Southern Kosciusko, Southern La Porte, St. Joseph MI, Starke, Steuben, Van Wert, Wabash, Western St. Joseph IN, White, Whitley, Williams