Residents across Columbus, Cincinnati, Wilmington, and beyond may need to keep their umbrellas handy today as widespread showers and isolated storms are anticipated to roll in. According to the National Weather Service (NWS), the area should brace for precipitation through late afternoon before conditions start drying out heading into midweek. The forecast, as of 554 AM EDT, advises near-normal temperatures until a warmer and humid air mass moves in by week's end, setting the stage for potential daily showers and storms into the weekend. NWS's detailed report was published early this morning.
A stacked low-pressure system drifting southeast from the Upper Midwest into the Ohio Valley is the culprit behind the uptick in deep-layer atmospheric flow, spurring a northeast-to-southwest band of showers and thunderstorms. Moving east through the local area into mid-afternoon, the band brings with it showers and potential thunderstorms, especially east of I-71. While the threat of severe storms seems low, NWS mentions that "an isolated instance of gusty winds will be possible as this activity moves through parts of NE KY and the lower Scioto Valley and central OH by mid afternoon." Despite the showers, by late in the day near I-71, sunnier spells are expected to push temperatures into the mid to upper 70s.
As night falls, though conditions will generally trend towards dry and sunny, thereby lowering the damp blanket covering the skies, NWS projects a narrow axis of clouds with isolated showers drifting southeastward. These could linger around I-71 until midnight. The second round of presumably lighter showers aligns with the oncoming frontal boundary. Monday night will see temperatures dip into the lower to mid 50s—a crisp contrast to the day's humidity—as drier air washes into the region from the west.
Looking ahead, Tuesday is penned as post-frontal, with the significant trough moving through early in the day and highs pegged for the mid to upper 70s under a blend of sunshine and cloud cover. Light westerly breezes and drastically lower precipitable water values than seasonal norms are anticipated, alluding to a drier air mass enveloping the region. For aviators, the NWS expects widespread showers to impact air travel through midday with potential MVFR conditions due to lower ceilings and visibility. However, flight conditions are expected to improve significantly by the evening, just as clearer skies begin to emerge. But keep in mind that a potential for showers returns late Monday night into early Tuesday, primarily impacting Dayton's airport as per the current aviation outlook.
As we head into the weekend, the NWS long-term forecast indicates a switch-up. The balance of sunny versus wet will tip once more with increased rain chances lasting from Friday evening through to Monday. Anticipate moderate temperatures peaking in the mid-upper 80s on Thursday, then slowly declining, while nightly lows warm from the upper 50s Tuesday night to the mid-upper 60s by the weekend. In summary, pack both shades and raincoats -- Ohio's weather this week is a mixed bag with all the trimmings of a classic Midwestern summer.
