After another very warm September day on Saturday with a record high of 93°F tied at Waterloo, Sunday was a dramatic shift to highs just in the 60s. For Des Moines, Sunday broke the streak of daily high temperatures of at least 70°F that started way back on 10 May. The featured chart presents the longest such streaks for Des Moines by day of the year. This year's streak comes in second place behind the record longest one established last year of 139 days. The forecast for this week has a slight warming trend with highs back into the 70s.

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