INDIANAPOLIS (WISH) – The fall season is enjoyed by many who are ready to kick back from the summer heat and enjoy the changing scenery around them.
The astronomical fall begins on Thursday while the meteorological fall began on September 1. The weather drop will be at the center of this story along with decay averages and some noteworthy events.
The weather fall is defined by the timeline from September 1 to November 1. 30. As we go through the fall, we get progressively cooler on average. However, there is a slight increase with the average amount of rain and snow we receive during the weather fall period. When you average everything out, the fall weather season has an average temperature of 55.6 degrees, an average precipitation of 9.81 inches, and even 0.9 inches of snow.
In our article on the weather for September 9, We are discussing averages for September in which it is a mild to hot month with just over 3 inches of rain on average. October and November make steep drops in the average temperature department, and that is why, as a whole, the fall season features a rather cool average temperature.
Now let’s talk about the historical statistics of the fall. It’s important to start with the fact that the past five falls have at times featured warmer than normal conditions, which is not considered usual. Despite this trend, none of the last five falls are in the hottest 10 category.
How about relatively cold falls? The last time we saw a cold drop in the top 5 was in 1976, which ultimately marks the coldest of the season.
The lack of rainfall has also been a story at times, with months like September 2017, September 2019 and September 2020 being extremely dry. For our wettest fall on record, we have to go all the way back to 1871. The driest fall on record occurred in 1963.
Fall can also feature erratic weather conditions. Let’s first talk about some notable severe weather events that happened during this season. There are several that can be named, but some that immediately come to mind are the damaging wind event of October 26, 2010 and the tornado outbreak of November 22, 1992. There will soon be weather reports on the web covering some of these events in more detail.
Winter weather can even make its presence felt early; as for example, October 19, 1989, featured Indy’s biggest snowfall event in month history with 9.3 inches of snowfall recorded. On November 14-15, 2018, an unusual ice event occurred in central Indiana. Some areas ended up getting up to 0.25 to 0.3 inches of ice.
Let’s quickly return to the discussion of autumn heat to wrap things up. October, for example, even had 90 degree days. Indianapolis had recently set its record high temperature for the month of October 1-2, 2019. The last date of the year that Indy experienced a 90-degree day was October 8, 2007, with a high of 91.