The featured chart presents the largest precipitation totals by month for Waterloo. With just over an inch on Tuesday, the rainfall total for this September is now the largest on record for the site for any month! The 12.89 inches this month bests the previous largest total of 12.82 inches for July 1999. Having the wettest month on record be September is somewhat rare for a long term climate site in Iowa. Of the 113 long term climate sites in Iowa tracked by the IEM, a previous September was the wettest month on record for 14 of them. The most common wettest month is June (41 sites).

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Tags:   2018