The annual section of the NOAA report has a column headed "Departure from the Norm" in both the Temperature section and the Precipitation section.
There seems to be no means of entering the average temperature / precipitation for each month of the year, therefore "departure from the norm" columns will always show 0.00.
I am able to enter average values for temperature and precipitation for each month when using Weatherlink software.
This is a very useful tool for showing trends when comparing month/ month and year / year.
Integration of historical weatherlink data to Weathercat would also be very useful.