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Metro Detroit weather: Afternoon thunderstorms predicted for some

Tuesday highs to reach mid 80s, but feel warmer

Metro Detroit weather forecast for July 20, 2021 -- 7 a.m. Update
Metro Detroit weather forecast for July 20, 2021 -- 7 a.m. Update

DETROITGood Tuesday afternoon!

A cold front sliding down from the north Tuesday will trigger some scattered thunderstorms, first developing in the northern Thumb region around 3 p.m. or 4 p.m. before moving southeast. The Thumb down into Macomb County could see a strong-to-severe storm, while the risk (both for coverage and severity) is lower for the rest of us.

Highs will reach the mid 80s, but will feel a bit warmer due to higher humidity.

Wind (outside of any storms) will generally blow from the southwest at 7 to 12 mph, shifting to the west later on.

Tuesday’s sunset is at 9:04 p.m.

Once any scattered early evening showers and storms move out, skies will become partly cloudy. A cooler, less humid air mass will also take hold, allowing temps to drop into the low 60s by dawn. A northwest wind will move at 5 to 10 mph.

Warm week with some rain

Wednesday looks like a splendid summer day, with partly cloudy skies and no smoke this time! Humidity will drop, which will make highs in the upper 70s feel very pleasant. It will be mostly clear Wednesday night, with comfy lows in the upper 50s.

Thursday will be partly cloudy with highs near 80 degrees. It will become mostly cloudy Thursday night, with a scattered shower or thunderstorm possible. Lows will rise back into the mid 60s.

Friday will be partly cloudy with scattered showers and thunderstorms. Highs will be in the low 80s.

Weekend forecast

The weekend forecast isn’t entirely clear right now.

Based on what I’m seeing in the long-range models Tuesday morning, it appears that we have a better chance to see a shower or thunderstorm Saturday than on Sunday -- but neither day appears to be a washout. In fact, Sunday could end up mostly dry.

I’m hoping to have more specific data to report tomorrow.

Temperatures appear to be on the uptick this weekend, with mid 80s Saturday and possibly upper 80s on Sunday.

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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.