A meandering frontal boundary continues to bisect the state with a significant difference in sensible weather depending on which side of the boundary you reside! For locations that were close to this boundary on Wednesday, temperatures did not do much thanks to the thick cloud cover. One of those locations was Marshalltown, which only managed a four degree difference between the daily high and low temperature. This is an exceptionally low value for June and during peak solar insolation for the year. The featured chart presents the smallest such daily temperature ranges for the site during June. The sparklines at the side provide a cartoon to show the calendar day temperature pattern for each day.

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