Space Time Cube Analysis

[LisaO_Day]

Hello,

I am working on a climate change study and am using the space time cube with emerging hot spot analysis to look for changing trends using daily values for both the maximum temperature and minimum temperature.  My Cavendish VT weather station shows mean annual maximum temperatures ranging from 52 to 59 degrees but when I run the hot spot analysis tool, no hold or cold spots are identified.  The chart looks like this: 

Shouldn't the emerging hot spot analysis pick up a bunch of hot and cold spots or is the change in range not large enough to find anything significant?  This is what I get back:

 I am using ArcGIS Pro v. 2.9.3.

Best regards,

Lisa O'Day