The cool down officially begins Saturday, as Denver's weather forecast shows highs in the upper 70s and lower 80s all weekend long. This is about 10 degrees below average for this time of the year, with isolated storm chances both today and tomorrow.

Heavy rain and isolated flooding is possible starting this weekend across northeastern Colorado as high temps in Denver drop into the 70s over through next week. Here's the latest on the flood threat.

Denver's weekend forecast predicts slightly cooler temperatures with a chance of thunderstorms and gusty winds.