Previously, the record for June 22 was 74 degrees, set in 1988.
Columbus tied the record for the highest low temperature for June 22.
The low temperature was 73 degrees Sunday, matching the record set in 1923, 1996 and 2024, according to NWS.
Ohio is under various heat advisories this week due to high temperatures and high heat indexes.
[3:30 AM] A Heat Advisory remains in effect through Wednesday evening. Look before your lock your vehicle!!
— NWS Wilmington OH (@NWSILN) June 23, 2025
Check on neighbors, elderly, infants, pets and livestock! 🥵 pic.twitter.com/88WApBMHat
A heat advisory is in effect for Southwest Ohio through 8 p.m. Wednesday.
A heat index of up to 103 degrees is possible with daily highs expected in the 90s.
People should stay hydrated and limit time outside in direct sunlight, according to the NWS. Wear lightweight clothes while outside and do any strenuous activity in the early morning or evening.
Public Health - Dayton & Montgomery County reminded people to watch for signs of heat stroke and heat exhaustion.
Symptoms of heat exhaustion include:
- Heavy sweating
- Weakness
- Skin cold, pale and clammy
- Nausea or vomiting
- Fainting
Those showing signs of heat exhaustion should move to a cooler location, lie down and sip water. Try to loosen clothes or apply cool, wet clothes to as much of the body as possible.
If a person is vomiting or symptoms get worse or last more than an hour, seek medical care.
Signs of heat stroke are
- High body temperature (more than 103 degrees)
- Hot, red, dry or moist skin
- Rapid and strong pulse
- Confusion
- Possible unconsciousness
Heat stroke is a medical emergency and 911 should be called immediately. Move them to a cooler place and try to reduce their body temperature with cool cloths or a bath.
Do not give a person with heat stroke fluids.
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