When on average is the last snow of the season in Indianapolis? INDIANAPOLIS (WISH) — A lot of people were not too happy waking up to snowfall in central Indiana Monday morning. Now that March is here and winter is almost over, when is the average last season snow in Indianapolis? A trac e of snowfall means snow fell, but did not accumulate enough to be measured or melted while landing. The average last trace of snow, based on the 30-year climate norms, is April 21. Measurable snow is anything at or above a tenth of an inch. Indy’s 30-year average for the last measurable snow is March 16. In the last five years, Indianapolis has been later than average three times. Indianapolis officially picked up an inch at the airport on Monday. The average last single day of picking up 1 inch or more is March 1. For anyone wondering, Indianapolis snowfall records go back to the 1880s. May 9, 1923, holds the title for the latest measurable snow in the city. Get the latest seven-day forecast from the Storm Track 8 weather blog. ...read more read less