You can't ask for a much better day in Central Indiana than the weather of Thursday. It's definitely looking and feeling like fall.
After lows in the 50s... temperatures slowly climb into the 70s as high clouds gradually thin. An area of high pressure centered near Kansas City delivers a steady diet of dry, northwesterly wind today.
This feature keeps the sky mainly clear this evening and overnight to allow lows to again drop into the 50s Friday morning. But there will be a impressive surge of warmth in the Ohio Valley and this warm front will produce downpours and locally heavy storms in its path.
At this time, subject to change, we believe the greatest chance locally for the warm front storms will be north and northwest of the Indy metro area. However, it's possible the boundary could sag farther south to up the ante for storms around Indy.
The boundary and storms create quite a large temperature spread from near 90 south, mid-80s central, to possible only 60s/70s in the rain-cooled, cloudy area up north.
Another round of heavy storms remain in play Friday night into early Saturday morning....possibly impacting areas along the I-70 corridor too.
However, warm and humid air pushes well north this weekend to lessen the chance of rain locally. In its wake will be high temperatures some 20° warmer than average and near daily record highs Monday - Wednesday of next week.
IF highs do reach 90° October 1st and 2nd...it would mark only the 5th and 6th October days in Indianapolis with highs of 90°+ since 1871. In other words... air conditioners will be cranking until a front cools us down late next week.