5/27- Rob Knight’s “Sunny & Hot” Friday Morning Forecast
An upper-level low pressure over southern Illinois this morning will slowly drift off the eastern seaboard tonight into the weekend. High-pressure will be the main factor shaping the weekend forecast. A weak upper low-pressure system could form in the eastern Gulf of Mexico over the weekend, but is not expected to impact the local weather.
Today and Saturday are expected to be nearly cloudless with comfortably low humidity. As the surface high pressure slips to our east on Sunday, winds will gradually turn onshore, increasing moisture and relative humidity values somewhat, but not oppressively so. Highs will primarily be in the upper 80s this weekend, and can’t rule out a few spots touching 90, especially Sunday. Overnight lows will be a bit on the cool side for late May in some of the normally cooler locations tonight and Saturday night, and near normal on Sunday night. Overall, a rather nice weekend weather-wise across the area.
A largely east-southeast flow regime will be in place on Monday and Tuesday, and this will allow for gradually deeper moisture to feed into the region. Conditions on Wednesday and Thursday will be very similar to those seen on Tuesday, but the influence of a minor disturbance parked over the eastern Gulf of Mexico will be more prevalent. This will allow for shower and thunderstorm activity to begin forming along weak sea-breeze boundary boundaries as early as mid-morning.