About 15% of the locations in this map have received greater than 10 inches more than their 10-year average precipitation for September and October. Des Moines has received over 11 inches of rainfall in September and the first half of October 2018, which is over 5 inches greater than their 10-year average September/October precipitation. Guttenburg has received 23 inches of rainfall in September/October 2018, which is over 17 inches more than their 10-year average for September/October. Many locations in NE Iowa have seen September/October rainfall amounts exceeding 20 inches, which is much greater than normal. You can hover over each of the dots on your computer to see the location name and precipitation values associated with it (if on your phone, click on the bubble instead). Note that the October 2018 data only includes half of the month at this point. The following interactive map shows the total September/October precipitation by the size of the dot, and the color scale indicates how many inches the September/October precipitation is greater than the 10-year September/October average for that location. Many are wondering, how does this fall rainfall compare to other years? We are now a little over halfway through October and Iowa corn harvest progress is only at 17% and soybean harvest progress is 19% complete, which are both behind the 5-year averages of 24% and 51%, respectively.

Iowa rainfall amounts