The average temperature so far this month is about 5 degrees below normal for Ames with each day having snow cover so far. The featured chart presents the relationship between observed average temperature departure and number of days with snow cover for January. While the linear fit is not perfect, the relationship is fairly clear. The preliminary value so far for 2011 is shown by the plus symbol. The chart shows the coldest five months all having snow cover for 30 or 31 days.

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Tags:   snowcover   jan