After a spell of abnormally cool conditions, a warming trend is expected in Pittsburgh through the middle of this week.
Highs early this week will climb into the lower 70s with mainly dry conditions. A shower or thunderstorm could sneak into the area by Tuesday evening.
By Wednesday, temperatures will reach the upper 70s, which is about 5 degrees above average.
More humid air will pour in at midweek and set the stage for a storm system to trigger showers and thunderstorms, some of which will be heavy and gusty.
Temperatures and humidity levels will take a tumble in the wake of the storm system later in the week.
Looking ahead, the Memorial Day holiday weekend is likely to start with near-normal temperatures with gradual warming through Memorial Day. However, it will likely not be hot and humid for the unofficial start to summer.
As July draws to a close, a storm system swinging up from the Deep South will bring downpours to the northeastern U.S. and break the back of an extended heat wave.
Repeating and slow-moving storms will raise the risk of flash flooding and damaging winds over northern and central High Plains into Thursday night.
Repeating downpours will raise the risk for flash flooding along the Gulf coast and lower Mississippi Valley through the middle days of the week.
Highs will run between 10 and 15 degrees Fahrenheit above average across much of the western United States into the upcoming weekend.
The F1 season continues this weekend with the German Grand Prix in Hockenheim with disruptive showers and thunderstorms in the forecast.
The heat felt across the United Kingdom during the middle of July has faded and is not expected to return through at least the first week of August.
Hurricane near Jacksonville; $2.5 million damage in East Florida.
Charlotte, NC (1979)
Last of 12 straight days on which some rain fell. Total precipitation was 3.74".
Redfield, SD (1990)
A total of 1.76" of rain in 25 minutes during the morning, then a tornado struck in the afternoon.