LOOKING BACK: How the weather has played a role in Grandma’s Marathon

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DULUTH, MN– The weather always plays a big factor in and around the Twin Ports, no matter what time of the year.

With Grandma’s Marathon coming up this Saturday, June 22, KBJR 6 took a look back at how the weather has been for the past 20 years of Grandma’s Marathon events.

According to the NWS, statistically, the average high temperature the day of Grandma’s Marathon is in the low 70s, with the average low temperature in the low 50s. During the past 20 years, the average high temperature was 71.8 degrees, and the average low was 51.7 degrees.

Last year, the high was 75 degrees, the low was 53 degrees, with 0.45″ of rainfall, which fell shortly before the major flooding just south of Duluth, and caused major road closures in the city of Superior.

The warmest high temperature was in 2009, when the temperature reached 83 degrees. The coldest high temperature was 64 degrees in 2000, as well as 2014. The warmest low temperature was in 2009 at 61 degrees, while the coldest low temperature registered at 35 degrees in 2000.

While temperatures were mostly seasonable, most of the races were on the rainy side of things.

Of the past 20 marathons, only five of them were completely dry, while two of them saw a trace of rain. 2003, 2004, 2005, 2007 and 2009 were the only years no rain fell during Grandma’s. On average, 0.35″ of rain has fallen on race day.

The 2002 and 2006 races were the wettest, with 3.33″ of rain falling in 2002, and 1.53″ of rain falling in 2006.

The 2002 race not only broke the daily record rainfall, but there were some reports of hail and damaging winds in and west of Duluth, according to the NWS.

You can keep track of the latest up-to-date forecast leading up to Grandma’s Marathon by clicking here.

Austin Haskins

Austin Haskins

Meteorologist/Web Producer
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