March report creation?

Go to

View
Averages/Extremes/NOAA Style Reports
[Tab] Recreate The Web Av/Ext Page
Set month to 3 for March
Reset the web page averages/extreme
Done

Your new March2018.htm is in your webfiles folder.
The webfiles folder can be found where you installed weatherdisplay.
You have to manually upload March2018.htm