The featured chart presents a histogram of daily high and low temperatures for the 19th of June for all available climate reporting sites in Iowa. The stepped line represents the actual frequency at a given temperature and the dashed line is the "normal distribution" given the dataset's mean and standard deviation. The fit between the two lines looks rather good and this type of relationship is common in Iowa for days without temperatures near freezing. The simple average shown of a high of 82 and low of 60 is close to the forecast over the next few days as we enjoy cooler weather and more chances of needed rainfall.

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