Feeling Like Fall Now But Record Warmth Possibly Ahead

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Sean Ash

Central Indiana is definitely looking and feeling the part of autumn weather. Tuesday morning lows dropped to their coldest levels since June 14th.

The dry air and abundant sunshine quickly warmed temperatures into the 70s this afternoon... a trademark of fall air.

That dry air (dewpoints in 40s/50s) goes along in keeping us the next 48 hours despite the fact a couple of upper disturbances move across the state.

The first arrives early Wednesday and brings a low chance of sprinkles and/or light passing showers. But clouds clear Wednesday afternoon for another pleasant day of highs near 80.

Another boundary drops south of the area Thursday morning... possibly delivering some showers before clouds clear. Thursday looks like a very pleasant finish with comfortable dewpoints and highs in the 70s.

A rapid transition to from near-normal air to much above normal air occurs Thursday into Friday. This evolution occurs from a strengthening low-level wind field. This low-level jet, combined with a stalling front, will be enough to trigger some showers and storms.

But the uncertainty at this time is exactly where the front will be. We're leaning toward a location north-northwest of Indy Friday and Saturday. This would lead to a warmer (highs mid/upper 80s) solution around the metro area with a greater chance of rain/thunderstorms along and near a Fowler/Lafayette/Kokomo/Marion line.

This boundary lifts well north of the region Sunday into the middle of next week and sets the stage for a streak of summer heat and high temperatures some 20° above average.

That equates to near 90° (or higher) which puts daily record highs in play Monday - Wednesday of next week. It should be noted the last 90°+ day in Indianapolis during October was 2007 and there have only been four October days since 1871 with highs of 90° in Indy.

Either way it will be plenty warm into the middle of next week.