Southern New Hampshire is in for a scorching day on Tuesday, with triple-digit heat index values expected. The National Weather Service has issued an Extreme Heat Warning, urging residents to take extra precautions. With “feels like” temperatures reaching up to 107°F, the heat and humidity will make conditions extremely dangerous, particularly in cities like Manchester, Nashua, and Keene.
Heatwave Impacts on Southern New Hampshire
The Extreme Heat Warning will be in effect from 11 a.m. to 8 p.m. on Tuesday, June 24. The high temperatures, combined with high humidity, will create a heat index in the range of 107°F across Merrimack, Hillsborough, Sullivan, and Cheshire counties. These areas, including major cities such as Manchester and Nashua, will experience dangerously high temperatures, which could lead to heat-related illnesses.
The National Weather Service in Gray, Maine, has emphasized that these conditions pose a serious risk to health, especially for vulnerable groups like children, seniors, and those working outdoors. Prolonged exposure to such heat can lead to heat exhaustion or even heatstroke. It’s advised to stay indoors, avoid strenuous activities, and limit travel on major highways like Interstate 93 and Route 3, as car breakdowns in extreme heat can be particularly dangerous.
Safety Tips During the Heatwave
To stay safe during the extreme heat, it’s essential to remain in air-conditioned spaces whenever possible. If you don’t have air conditioning at home, consider heading to public spaces like shopping malls or libraries. It’s also important to hydrate regularly, as the heat can quickly cause dehydration.
Residents are urged not to leave pets or people in parked cars, as temperatures inside can rise past 140°F in just minutes. It’s also a good idea to check on neighbors, especially the elderly or those with limited mobility, to make sure they are staying cool and hydrated.
Relief in Sight: Cooler Temperatures Later This Week
While the heat will be intense on Tuesday, there is some relief on the way. Temperatures are expected to drop midweek, starting on Wednesday with a high of 92°F and a 40% chance of rain overnight. By Thursday, highs will be more mild, reaching 76°F, with rain chances increasing. Friday will see further cooling with a high of 72°F and a 60% chance of showers.
The weather will remain cooler into the weekend, with a high near 79°F on Sunday, offering a welcome break from the heatwave.
Five-Day Forecast for Manchester, NH (June 24–28)
Tuesday, June 24: The high will reach 100°F, with a heat index up to 107°F. Expect mostly clear skies in the evening with a low of 75°F.
Wednesday, June 25: A high of 92°F with mostly sunny skies. The low will be 65°F, and there’s a 40% chance of showers overnight.
Thursday, June 26: The high will be 76°F with a 30% chance of rain. The low will drop to 58°F.
Friday, June 27: Expect a high of 72°F with a 60% chance of showers. The low will be around 59°F.
Saturday, June 28: Showers are likely with a high near 76°F. There’s a 60% chance of rain. The low will be around 60°F.
Sunday, June 29: The temperature will be cooler, with partly sunny skies and a high near 79°F.
Stay Safe and Prepare for the Heatwave
During extreme heat, it is vital to take necessary precautions to avoid heat-related illnesses. Staying cool in air-conditioned spaces, drinking plenty of water, and limiting outdoor activities are the best ways to protect yourself. If you’re working outdoors or need to be outside, take frequent breaks in the shade, wear lightweight clothing, and use sunscreen. Be sure to monitor the weather closely for any updates or warnings.
