So far: this Fall is faster than last year in Indy. In 2016 the Weather Service didn’t officially record any frozen precipitation until a trace on November 19. (And that was it for the month, btw.)
At this point last year the coldest Indy temp had been 38 degrees. This year it is 34, so far. Should be right around freezing Sunday morning.
..Freeze Warning in Effect Tonight... .Cold High pressure...clear skies and light winds are expected tonight. This will allow low tempertures to fall in to the lower 30s. INZ021-028>031-035>049-051>057-060>065-067>072-281500- /O.NEW.KIND.FZ.W.0007.171029T0500Z-171029T1200Z/ Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery- Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke- Putnam-Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan- Johnson-Shelby-Rush-Sullivan-Greene-Monroe-Brown-Bartholomew- Decatur-Knox-Daviess-Martin-Lawrence-Jackson-Jennings- Including the cities of Lafayette, Frankfort, Kokomo, Crawfordsville, Anderson, Muncie, Indianapolis, Terre Haute, Shelbyville, Bloomington, Columbus, Vincennes, Bedford, and Seymour 254 AM EDT Sat Oct 28 2017 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM EDT SUNDAY... The National Weather Service in Indianapolis has issued a Freeze Warning, which is in effect from 1 AM to 8 AM EDT Sunday. * TEMPERATURE...Low Temperatures between 31 to 33 are possible late tonight. * IMPACTS...Vegetation that sensitive to temperature may be damaged or killed. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation.