This 7-day forecast is 93% perfect (6.5 days out of 7) only because of a few storms passing by this evening. Other than that, we are in for a perfect week of weather to extend our recent stretch of gorgeous sunshine. The next 7 days will hardly seem like the end of the summer but more like the start of fall!
A cold front will move through the Tri-State late this evening and pool some moisture out ahead of it. This will lead to a brief increase in humidity today especially by late in the afternoon. Highs will also be a little warmer reaching 85-87 degrees with a southwest breeze. Expect partly to eventually mostly cloudy skies today with a chance for rain after 7 p.m.
A broken line of showers and a few thunderstorms will push through between 7 p.m. and 11 p.m. this evening. Heavy rain and gusty winds are possible, but severe weather is not expected. A lack of deep moisture returning from the golf through the entire atmosphere will limit instability and wind shear is not particularly strong. Skies will clear late Sunday night and cooler / drier air will filter into the area. Lows will dip down to around 60 degrees.
Even with plenty of sun on Monday, a very cool air mass in place will limit highs to the middle 70s. This will actually be the case for the entire case with only slight moderation expected through the period. The cool air is thanks to a deep upper level low (or trough) in the jet stream over the Great Lakes which will move extremely slowly. Our favorable placement relative to it puts us under high pressure at the surface all week!
A few spokes of upper level energy rotating around the upper low may send a little extra mid-level moisture our way on Wednesday and Thursday. This could result in some extra daytime cumulus clouds, but showers are not expected.
We will start to warm up next weekend, but 90’s are not expected. In fact, it is appearing more likely that we will end August with NO 90 degree days! Forecast models are moving a ridge in the jet stream east into our area as we progress into September which may signal a return to more warmth and humidity.
Enjoy the weather this week! This may go down as one of the best weeks of weather for 2015 in Cincinnati.
Tropical Storm Danny
Danny has weakened to a strong tropical storm and is expected to continue to weaken over the next several days. Winds are at 60 mph with gusts to 70 mph as of early Sunday morning. Danny will impact some of the Caribbean Islands through the start of the week. As of this point, no impact is expected to the U.S.