Excessive Heat Warning issued for this weekend

- Southern-style heat is expected this weekend.

Beginning Friday, we'll have at least a 3-day stretch of 90 degree weather, with all those days having a heat index in the 100s with the humidity. 

Friday's high is expected to be in the low 90s, but with a heat index of 100. The heat index is taken by combining the temperature and the dew point, giving you how the air really feels.

An Excessive Heat Warning has been issued by the National Weather Service for all of southeastern Michigan. It's already in effect, and doesn't expire until midnight on Sunday, July 1. The hot and humid air could lead to potentially dangerous conditions, especially for the elderly and those with pre-existing health conditions.

Drink plenty of water, stay in the air-conditioning and out of the sun. Don't count on low temperatures to cool things down overnight, either. 

The hottest day of the year is on tap for us on Saturday. The high will be in the upper 90s, with a heat index around 103 -- which could be a record-breaker.

Sunday will be in the mid 90s with a heat index around 100. 

RELATED: Great Lakes still too cold for swimming, U.S. Coast Guard warns

The 90 degree weather could hold into the 4th of July week, too. Temps in the 90s are expected Friday through Sunday, but we could see an even longer stretch if things continue to heat up mid week. Right now the high temps forecasted for early next week and into the 4th of July are in the upper 80s, so a longer stretch of 90-degree temps is definitely possible. 

Stay with your FOX 2 Weather Authority Team and the FOX 2 Weather app for updates. 

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