Metro Detroit will enjoy a quiet stretch of weather through Monday, with dry conditions and 80-degree temperatures continuing across Southeast Michigan. The next opportunity for rain and thunderstorms arrives late Monday and continues into Tuesday as a weather system moves through the Great Lakes. While a few stronger storms cannot be ruled out, the primary concern at this time appears to be locally heavy rainfall rather than widespread severe weather.
Rainfall totals are projected to be between a quarter-inch and three-quarters of an inch across the region. However, some forecast models and guidance indicate isolated areas could receive 1 to 1.5 inches of rain or more where heavier downpours develop. Because thunderstorm placement will be highly variable, rainfall amounts may differ significantly over short distances, but flash flooding remains a concern.
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After Tuesday’s rain chances, attention quickly turns to building heat and humidity during the second half of the week. Temperatures are expected to surge into the 90s on Wednesday and Thursday, while increasing humidity levels will push heat index values close to or above 100 degrees at times. The combination of hot temperatures and muggy conditions will create the first notable heat risk of the season for many communities across Southeast Michigan. Even overnight lows will only fall to around 70 making it difficult to give the air conditioning a break. Additional chances for showers and thunderstorms will accompany the heat later this week.