Our stretch of sunny days looks to continue today. The featured chart looks at the observed frequencies of having one day (black line) and three days in a row (blue line) of mostly clear or clear skies as observed at the Des Moines Airport. The chart shows September as having the highest frequencies with an interesting dip in the trend during the middle of the month. It is not clear what would be causing that, but this is another chart that would indicate perhaps fall is the best season of the year in Iowa!

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Tags:   climate   clouds