With thousands of runners and spectators in town for Grandma's Marathon, here is what they can expect for weather today.

Morning Forecast (Starting Line – Two Harbors)

Cloudy with temperatures around 60 degrees. A slight headwind around 5 mph will persist through the morning. It will feel muggy with high dew points and relative humidity. There is a 90% chance of rain through the morning.

Morning Forecast (Finish Line – Canal Park, Duluth)

58 degrees with a 90% chance of rain and possible rumble of thunder through the morning hours. Dew points and relative humidity will be high, so it will feel muggy. An east wind around 5 mph will be present in town.

Daytime Forecast (Canal Park, Duluth)

Significant rain chances will persist through the late morning and into the early afternoon, eventually giving way to partly cloudy conditions by 5 pm. Temperatures will warm into the lower 60s through the afternoon in areas near the lake, including Canal Park. Dew points and relative humidity will be high, so it will feel muggy.

Evening Forecast – Entertainment Tents (Canal Park, Duluth)

Rain chances will diminish, giving way to a partly cloudy sky with temperatures settling around 55 degrees.