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What to Expect in October: Weather


The graphic to the left compiles the average temperatures during the day and night in each region of Indiana.


Averages Last Year

The average temperatures during October for Indianapolis were almost exactly as predicted in the graphic to the left in the beginning of the month, but gradually getting colder as the month progressed. Comparing the first two weeks of October in 2022:

Oct. 1 - a high of 74 and a low of 47.

Oct. 15 - a high of 59 and a low of 37.


What Can We Expect?

Based on the expected temps in the graphic above and the average temps from last year we can expect October to be cooler than usual. Last year there was a steep drop in temp when transitioning from September to October. Although, the year before was unseasonably warm, so averaging both years it is safe to say this year should comply with the predictions in the graphic above.


What About My City?

A helpful web page you can use to compare your own city's average temps from 2022 to this year is: Weather Spark

Just type in your city and data graphs for past years, as well as 2023, will appear.


Weather + Phenology: How Do They Relate?

The temperature impacts the phenology cycle of plants especially during these critical season changes. At this time in Indiana, the temp is getting low enough to cause leaves to start changing color and fall off their trees. If there is a drastic change in the typical expected temp for this month or next, it could lead to this process happening sooner than normal, or later than normal. This in turn affects the life cycle timing for many insects and animals who use these plants as a food source.


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