Metro Detroit Weather: Here comes the heat

Heat wave kicks off with highs in mid 80s Friday

A heat wave has reached Metro Detroit on Friday -- and humidity is on the way, too.
A heat wave has reached Metro Detroit on Friday -- and humidity is on the way, too.

DETROITHappy Friday!

And so it begins: an extended stretch of hot weather with increasingly uncomfortable overnight sleeping conditions. Welcome to the heat wave!

Skies transition from mostly cloudy to partly cloudy this afternoon, and it will become hot as highs reach the mid 80s.

Although I do not formally have any rain in the forecast this afternoon, I’ve been intensely studying this morning’s upper air forecast soundings (model projections of upper air parameters, such as instability, moisture, etc.), and it’s going to become pretty unstable during the afternoon. While there are other parameters arguing against any isolated shower or thunderstorm popping up, that instability concerns me, since even a lake breeze could trigger development.

But if any showers do pop up, they would truly be isolated; most, if not all, of us should remain dry this afternoon, with just some harmless cumulus clouds popping up -- those are the “cotton ball” clouds you are no doubt familiar with.

It will become breezy on Friday, with a southwest wind increasing to 10 to 20 mph.

Friday’s sunset is at 9:06 p.m.

Friday night will be mostly clear with lows in the mid 60s. A southwest wind will move at 5 to 10 mph.

Scorching hot weekend

You’ve been hearing about it all week long, so you’re ready for it: a scorching hot weekend.

It will be mostly sunny both days, with highs in the upper 80s Saturday, and near or a little above 90 degrees on Sunday. Lows Saturday night will be in the mid to upper 60s.

And then comes the humidity

While the humidity may creep up a tad on Sunday, it will certainly make its presence known for most of the week ahead.

Monday through Thursday will be hot and humid, with afternoon thunderstorms popping up in the heat of the day. We desperately need this rain but, after four days of this stuff, the break from the rain we’ll likely get on Friday will be a relief.

Humid highs will be in the upper 80s to near 90 degrees through Wednesday, then in the mid 80s Thursday and Friday. Overnight lows will be in the upper 60s through Thursday morning -- meaning very uncomfortable sleeping weather for those without air conditioning.

And remember that it takes all night just to get to that low … it’ll be noticeably warm and sticky outside when you’re trying to fall asleep. It appears that we finally trend back to a more comfortable air mass Friday into next weekend.

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About the Author:

Local 4 meteorologist Paul Gross was born in Detroit and has spent his entire life and career right here in southeast Michigan. Paul has researched, written and produced eight half-hour documentaries for WDIV, as well as many science, historical and environmental stories.