Grandma’s Marathon is this weekend, and runners and spectators alike want to know what the weather will bring for the big race and the rest of the weekend's activities. Weather can vary between the starting location in Two Harbors and the finish line in Duluth, and as those who live in the Northland know, weather can change greatly from one hour to the next; so what will the weather be like for Grandma’s Marathon?

Saturday

Morning (Two Harbors/Starting Location)

Mostly cloudy with a 40% chance of showers and thunderstorms. Fog is likely, with dense fog possible. Temperature near race time will be around 50 degrees, with a ENE wind at 5 to 15 mph.

Morning (Canal Park/Duluth)

Overcast with a 50% chance of showers and thunderstorms. Fog is likely early, and may be dense in places. Temperatures will be around 50 degrees, with an ENE wind at 10 to 15 mph.

Daytime (Canal Park/Duluth)

Overcast with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. Fog early. High of 59F. Winds from the ENE at 10 to 15 mph. Chance of rain 60%.

Night (Canal Park/Duluth)

Overcast with thunderstorms and rain showers. Low of 59F. Winds from the East at 5 to 10 mph. Chance of rain 60%.

Sunday

Daytime (Canal Park/Duluth)

Overcast with a chance of a thunderstorm and a chance of rain. High of 72F. Winds from the SSE at 5 to 10 mph. Chance of rain 50%.

**We'll be updating this regularly as the latest forecast data comes in. As soon as an hourly breakdown of race day weather is available, we'll have a full breakdown of what to expect along the entire race course through the morning.