Some of the warmest air of the summer is heading to Wisconsin for much of next week, and the heat may last through the Labor Day holiday weekend.
News 3 Meteorologist Gary Cannalte said a combination of high temperatures in the 90s and dew points in the upper 60s and 70s will lead to heat index values of between 95 and 105 degrees in the day, dropping only into the 70s and 80s at night beginning Sunday.
The heat is expected to move in over the weekend because high pressure directly over south-central Wisconsin will move east while expanding back into the Midwest. Cannalte als said southerly winds on the west side of the high will bring warmer and increasingly humid weather into Wisconsin later this weekend into next week.
The middle and upper levels of the atmosphere will warm as well, preventing rising currents of air that might produce thunderstorms from forming. That means that no rain relief from the heat and humidity is expected, Cannalte added.
For people with poor health, the elderly, the very young, and people on medication that may affect the body’s ability to stay cool, the high heat indices could lead to serious health problems, especially for folks without access to air conditioning.
Officials recommend people start planning on how to stay cool during the upcoming period of prolonged heat. To locate area cooling centers, visit readywisconsin.wi.gov.
The state Department of Health Services said residents are asked to check on neighbors and friends who might be susceptible to the effects of high heat and humidity, and make sure they have a way to get to somewhere cool during the upcoming heat wave.
DHS said 27 people died in Wisconsin as a result of heat-related issues last year.
Cannalte said that for much of the summer, upper level winds in the area have been from the northwest, keeping periodic bouts of cooler than normal moving through for much of the past few months.
Other than having a short period of high temperatures in the 90s in mid-July, area high temperatures have stayed in the 70s and 80s. In fact, Cannalte said that since June 1, we’ve had more days with high temperatures in the 60s (six days) than with high temperatures in the 90s (five days).