Kara from Google posted in the Google My Business Help forums that Google "made improvements to ensure that your Insights data is more up-to-date." So the Google My Business Insights reports can "now see Insights data up to yesterday."
I checked my own data and I am only seeing data up through the 16th of November, which was Friday or three days ago. So maybe this upgrade is not fully released yet?
Kara wrote:
We're happy to announce that we've made improvements to ensure that your Insights data is more up-to-date.To give you a more accurate idea of how your listing is performing, you'll now see Insights data up to yesterday in Google My Business.
Do you see fresher and more real-time data, showing you as recent as yesterday?
Forum discussion at Google My Business Help.
Update: This release has been pushed back several months.