Over the next few days, we will see much more cool, fall-like conditions. This is a drastic change from last week, when our temperatures were nearly 20 degrees above normal for this time of year. With that comes wetter conditions as well, and that will be in evident Sunday going into Monday. With a low pressure system passing to our South and bringing a lot of moisture with it, it is very possible we could see upwards to an inch of rain or more.
The Weather Prediction Center put out this QPF (Quantitative Precipitation Forecast) map to show where the likely areas of high rainfall will be. It looks that most of the rain will stay to our south, but I think it is likely we will see close to an inch of rain, if not more. Let's time out this rainfall.
By late Sunday morning we should see the beginning of the rain showers moving into Northern Illinois from the South.
Heavier showers will be present in the afternoon as well, and coverage will remain high throughout the entire day.
Through the night Sunday and into early morning, persistent showers will still be present. I think the majority of these rain showers will be further North than this model shows, so there will be few breaks in the rain.
Sometime in the early afternoon on Monday is when the rain showers are expected to stop, but not before dumping an inch or more of rain on us.
Don't forget the umbrella through the day on Sunday and Monday!
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