The cooler and refreshing air will slow be a thing in the past as dewpoints rise into the middle 60s today, compared to the middle 50s yesterday. And, with a south to southwesterly flow of air, most temperatures will be in the middle 80s in the afternoon. As we’ve been saying for the past few days, there will be a wave of low pressure that is currently located over Lake Michigan — which will be swinging into Canada tonight and into tomorrow… And, this weather system is the same feature that will be pushing a cool front into the Eastern Region late tonight and tomorrow… Therefore, we see a trend unfolding where clouds will start to increase this afternoon, followed by a shower or thunderstorm late tomorrow night. The area of precipitation will likely fall apart as it heads to the city but western parts of the city could see something spotty. Then on tomorrow, the entire area will be “fair game” for getting a shower or thunderstorm at virtually any time. This doesn’t mean it’ll “rain all day long”, but it will take several hours for the corridor of showers with embedded thunderstorms to pivot eastward and move through the region…Right now it seems that the more active time period will be in the afternoon but there could be some showers in the morning. There are some differences in the models on Monday as it pertains to the speed of this front, there could be a morning shower especially east of the city but for now, we will go with the more “progressive” idea, with most temperatures near the seasonal averages.


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