Temperature Swings in January in Illinois

The old statistical joke is that a person with one foot in the fire and one foot in a bucket of icewater feels comfortable – on average. That describes Illinois for January. In round numbers, the first 9 days were 7 degrees above average. The next five days were 6 degrees below average. So we are a little warmer than average for the month, but you wouldn’t know from this week’s weather. Here is how it looks in a chart:

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According to the National Weather Service, the cold weather will continue through the middle of next week before warming. Here are the forecasted lows for Monday, showing the lows dropping below zero for northern and central Illinois, and in the single digits for southern Illinois. That will probably be the coldest morning of the week.

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