September weather stats and history in Indiana

INDIANAPOLIS (WISH) — September in Indiana is called the transition month in the direction of the autumn season. This transition can function some notably attention-grabbing climate traits and occasions. Let’s dive into what this month is meant to be like and the historical past behind it.

The month of September on common is usually on the hotter facet, however not too sizzling like July and August. Right here in Indianapolis, we begin the month with common highs within the low 80s. Then, the typical tumbles all the way down to the low 70s by Sept. thirtieth. For the general month, the typical excessive throughout the board is 78.2°. We additionally start to work in additional cooler and comfy fall-like nights. One vital factor to notice that might be revisited later is the typical rainfall is simply over three inches, thus marking it one of many much less lively months within the 12 months.

Let’s transfer ahead in the direction of Septembers which were nowhere near regular. There have solely been two Septembers within the final 15 years to crack the highest 10 warmest listing (2019, 2007). Apparently sufficient, 2019 not solely featured the warmest September on document primarily based on common common temperature, nevertheless it additionally grew to become the third driest on document. To additional observe, Indianapolis’s document excessive for September is 100°. You wish to take a few chilly September? Nicely, that dialog hasn’t been wanted in fairly some time. The final time this month was featured in a high 10 coldest listing was again in 1993 at quantity seven. Though this month is often not as moist as others, there have been a number of situations that featured very lively circumstances. As talked about in final Friday’s internet climate story, 2003 showcased the wettest September on document. This month has additionally seen vital dry intervals with 5 of the highest ten driest on document occurring within the final 25 years (1998, 2007, 2010, 2017, 2020). September 2020 was so dry that it grew to become tied for the fourth driest general month of all-time.

September also can function some intense climate and irregular temperatures. Sept. 1, 2003 options Indianapolis’s wettest day on document with 7.20″ of rain, and the outdated document was set on Sept. 4, 1895 with 6.80″ of rain. On Sept. 12, 1988, an F1 twister skipped alongside a 35-mile path from Indianapolis to Anderson and brought about injury to companies. A rarity occurred on Sept. 18, 1972 in Dover, IN (Dearborn county) when baseball sized hail fell, and we not often see this type of hail on this state. In 1983, Indy hit its 58th 90° day of the 12 months on Sept. 19, which marked probably the most quantity of 90s in a single 12 months. One other bewildering rarity befell on Sept. 20, 2002 when the second longest tracked twister (rated F3) in Indiana historical past cuts a 112 mile path from Ellettsville to Hartford Metropolis. Different cities that had been impacted by this twister included Martinsville, Indianapolis, and Anderson. The ultimate day of September in 1899 featured the earliest freeze on document in Indy with a low of 30°.

That’s only a few of many notable occasions which have occurred in September. Though this month marks the transfer in the direction of extra refreshing climate with fall, there may be rocky climate eventualities that play out alongside the way in which.