It was nice to have rainfall across central Indiana Sunday. While we need a lot more, even a few hundredths of an inch of rain takes September numbers higher. Indianapolis had received 0.07" through 7 p.m. Sunday evening. That more than doubles the month's total. This now ranks as the driest September to date in four years and is the 6th driest September (to date) since 1871.
Scattered showers will remain possible through 11 p.m. Sunday. Afterwards, we will watch for fog development in areas along, and south, of State Road 46 in south-central Indiana.
Expect to see cloudy skies for most of Monday. An area of rain will likely move in to southern Indiana during the afternoon. With heating of the day a few thunderstorms may be embedded within the showers. The best chance for rain will be south of I-70.
Clouds and rain - along with a light NE wind - will keep temperatures below normal. High temperatures will be in the lower to middle 70°s.
After a nice break from the humidity, it has returned to central Indiana. Gone are dew point temperatures in the 40°s. Dew points in the 60°s have returned, and will remain in place for much of the upcoming week. This means you will want to keep your windows closed to keep it comfortable inside your home.
Eyes start to move further south in to the western Caribbean Sea as and area of thunderstorms may become the next tropical system. Long range computer models suggest a tropical storm will develop and move north/northeast through the Gulf of Mexico, making landfall sometime late in the week. Models then suggest the surface low pressure area will move north in to the Tennessee Valley, bringing rain up to the Ohio River by the weekend.
As the jet stream has moved north, there is not much in the way of steering currents to push this low, along with a projected upper-level low over the mid-Mississippi River Valley, to the east. The current solution by the computer models is to have the upper-level low absorb the tropical system and then slowly meander through the eastern United States, producing cloud cover and rain. We will watch this to see how things trend later in the week. Computer models are notorious for struggling with these scenarios, but if you have outdoor plans later in the weekend/next weekend you will want to keep up with the forecast.
Indianapolis Weather Forecast:
Monday: Cloudy. Afternoon showers and t'storms, mainly south of I-70. High: 73°
Tuesday: Turning partly cloudy. "Dry slot". Late afternoon scattered showers/t'storms. High: 76°
Wednesday: Increasing clouds. High: 74°
Thursday: Mostly cloudy and humid. High: 77°
Indianapolis 7-Day Weather Forecast
