Update: 10:47 am. The Twin Cities are on the northern fringe of a broad area of showers and embedded thunderstorms, occasional rain (and a few lightning strikes) are likely through midday, but it still looks like the brunt of the rain will pass off south of town over the next few hours. With the clouds and more of a west/northwest breeze temperatures today should be considerably cooler than yesterday, when we "enjoyed" 95 degrees. With the clouds and rain readings may hold in the 70s today, and in spite of a threatening sky your late afternoon/evening activities are not in grave danger - I do expect a gradual drying trend this afternoon with some late afternoon clearing - you may get a peek at the setting sun at 9:03 pm.
Latest visible satellite image showing a thick shield of clouds (anvil tops of T-storms passing south of the Twin Cities). But the northwestern half of Minnesota is bathed in sunshine, and most of the day should be dry north of a line from Willmar to Albertville and Taylor's Falls.