An upper level area of low pressure will slowly pull off to the east late this evening. Until it does, instability rain showers and isolated storms will develop in a scattered fashion. Because of extremely cold air aloft, some of these showers will produce pea-size hail in the stronger cores. So do not be alarmed if you see some white pellets hitting the ground! Because of the clouds and showers, highs will stay in the middle 50s today.
It will be another chilly night! A Frost Advisory is in effect for the entire region through early Sunday morning. Clearing skies and calm winds late tonight will allow for the temperature to drop into the middle and upper 30s in some locations. Expect lows between 38 and 41 in the city but possibly as low as 35 degrees in the farther outlying areas outside the city. Patchy frost will be possible, so be sure to take appropriate action to protect any sensitive plants.
High pressure returns to the region tomorrow which means plenty of beautiful sunshine. The air mass overhead will still not be excessively warm, but the mid-May sun strength will help get temperatures into the middle and upper 60s.
We will see a warming trend heading into next week with highs soaring in the 70s on Monday and 80s on Tuesday. As a frontal boundary begins to develop and lay out near the Ohio Valley, chances for storms will increase towards the middle of the week.