Metro Detroit weather forecast: Get set to sweat

Heat about to ramp up


DETROIT – Right on schedule, heat and high humidity have surged into the area, but the worst is yet to come.

If you don’t have air conditioning, the next two days and nights are going to be pretty tough. Tuesday night will feature partly cloudy skies and perhaps an isolated shower, and it’ll be very warm and muggy, with lows only in the mid-70s, or 23 degrees Celsius for our Canadian neighbors across the river. Remember that it’ll take all night to get to the low temp. There will be southwest winds at 4 to 8 mph.

It will be partly cloudy, hotter and even more humid on Wednesday, with scattered afternoon thunderstorms possible, though not everybody will get one. Highs will be in the low 90s (33 degrees Celsius), although heat indices will be near 100 degrees (38 degrees Celsius).

Although no advisories have been issued, if it appears that heat indices of this magnitude will persist for three or more hours, the National Weather Service might issue a heat advisory. Southwest winds will blow at 8 to 13 mph. Wednesday’s sunrise is at 7:05 a.m., and Wednesday’s sunset is at 7:56 p.m.

Scattered thunderstorms are possible Wednesday night, with lows still very oppressive in the mid-70s (23 degrees Celsius).

It will be mostly cloudy with showers and possible thunderstorms likely on Thursday as a cold front approaches. Highs will be in the mid-80s (29 degrees Celsius).

Skies will become mostly clear behind the cold front Thursday night, with lows in the mid-60s (18 degrees Celsius), which is much better than the previous two nights.

We’ll start Friday with sunshine, then clouds start increasing at some point during the afternoon. Rain is possible by late afternoon or evening, but it had better hold off until after I complete my September round of golf, which will complete my "12 Consecutive Months of Michigan Golf." My tee time (which I had no control over) is at 2:40 p.m., so it’s going to be close. I’ll fill you in Thursday with details of the very special place I’ll be playing. I cannot begin to tell you how excited I am.

Highs Friday should be comfortable, near 80 degrees (27 degrees Celsius).

Showers and thunderstorms are likely Friday night, with lows in the mid- to upper 60s (19 degrees Celsius). Rain could be an issue for Friday night high school football games, so stay tuned.

How much of our Saturday is affected by showers and thunderstorms is directly tied to the timing of an approaching cold front. Tuesday's models bring the front through during the afternoon, which would keep rain chances going in the morning, and probably into part of the afternoon.

Rain could be an issue for Michigan football’s game at noon Saturday in Ann Arbor. I’m the U of M football team’s meteorologist so, trust me, they are well aware of the rain possibilities.

Highs Saturday will be in the upper 70s to near 80 degrees (27 degrees Celsius).

It will become partly cloudy Saturday night, with lows in the upper 50s (15 degrees Celsius).

It will be mostly sunny and spectacular on Sunday, with highs in the mid-70s (23 degrees Celsius).

Monday looks nice, too, with mostly sunny skies and highs in the upper 70s (26 degrees Celsius).