If you've got outdoor plans across eastern South Dakota, Southwest Minnesota, or Northwest Iowa this weekend, get ready for some serious summer heat.

The National Weather Service in Sioux Falls is forecasting hot and humid conditions that will settle into the region through the weekend.

Read More: The Top 10 Things South Dakotan Folks Throw On The Summer Grill

Afternoon temperatures are expected to climb into the upper 80s and 90s, but the combination of heat and humidity will make it feel even hotter.

NWS Sioux Falls
NWS Sioux Falls
NWS Sioux Falls

Heat index values could reach around +105 degrees in some locations during the hottest part of the day.

With conditions like these, it's important to take precautions if you'll be spending time outdoors.

Drink plenty of water, wear lightweight clothing, take frequent breaks in the shade or air conditioning, and never leave children or pets inside parked vehicles...even for a few minutes.

The heat can also be dangerous for older adults and anyone with chronic health conditions.

Be sure to check in on neighbors, family members, and friends who may not have access to air conditioning.

If you're heading to area lakes, ballgames, festivals, or backyard barbecues, remember that the sun is strongest during the afternoon hours.

Sunscreen, hats, and plenty of fluids can go a long way toward preventing heat-related illnesses.

Minnesota's Must See World's Largest Roadside Attractions

If you are making some family summer vacation plans maybe check out Minnesota's Roadside Attractions like the World's Largest Otter, Pelican, Babe The Blue Ox, and more! 

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