The weekend will come to an end with severe thunderstorms threaten Pittsburgh before a taste of September follows for the new week.
As much cooler air begins to plunge into the Upper Midwest thanks to a southward trip by the polar vortex, warm and humid air will set the stage for severe thunderstorms to threaten Pittsburgh Sunday afternoon and night.
The strongest thunderstorms will produce damaging winds, flooding downpours and some hail.
The same line of thunderstorms may reach Cincinnati before the game between the Pirates and Reds is complete.
AccuWeather.com MinuteCast™ has the minute-by-minute forecast for your exact location when showers and thunderstorms threaten. Type your city name, select MinuteCast™, and input your street address. On mobile, you can also use your GPS location.
Humid will remain on the higher side on Monday as a shower or thunderstorm lingers around southwestern Pennsylvania and threatens to disrupt outdoor activities.
More numerous showers and thunderstorms should follow for Tuesday as noticeably cooler air begins to work into the region.
With that cooler air in place, the midweek will feel more like September than the middle of July which is typically the hottest time of the year. Dry weather and low humidity will compliment the day for cool-weather fans.
Temperatures at midweek will be held to the lower 70s; a high of 83 F is more common.
The risk of flooding downpours and gusty thunderstorms will increase across southern Florida as a tropical disturbance shifts northwestward from Cuba this weekend.
Stargazers will want to dig out their binoculars and telescopes this weekend as Venus and Jupiter shine so close that they appear as one large, bright star in the evening sky.
Typhoon Lionrock is poised to make landfall in Japan early in the new week with heavy rainfall, damaging winds and an inundating storm surge.
Hawaii is facing not one, but two tropical threats next week as Madeline and Lester churn westward.
Slow-moving and repetitive downpours will raise the risk for flash flooding along the western Gulf Coast into early next week.
Hot and dry weather will greet fans and competitors at the 2016 U.S. Open Tennis Championships in Flushing, New York, as play begins Monday, Aug. 29.
The Bronx, NY (1990)
Strong thunderstorms dumped 4.24 inches of rain.
Nassau, NY (1990)
Thunderstorm winds overturned boat, injuring 12.
Mt. Washington, NH (1856)
A total of 3 inches of snow on peak of mountain.