The 7.85 inches of rain that fell in May in the official gauge at Hector Airport was the anomaly of the year. The winter and spring had been very dry to that point and the summer has been dry since.
Fargo Moorhead has received about one and a third inches above the average precipitation year to date. However, every single month has been drier than average except for May.
The total precipitation year to date not including May is 3.71 inches below average. But May rainfall was 5.04 inches above average. Perhaps conditions this fall will balance this out a bit. Autumn precipitation tends to be above average in many El Nino years. But if 2015 goes down in history as being a wet year, it will be heavily weighted by the tremendous rainfall we received in May.
