What does the data show? The data shows monthly averages of rainfall amount (mm) for 1991-2020 from HadUK gridded data. It is provided on a 2km British National Grid (BNG). What are the naming conventions and how do I explore the data? This data contains a field for each month’s average over the period. They are named 'pr' (precipitation) and the month. E.g. 'pr March' is the average rainfall amount for March in the period 1991-2020. To understand how to explore the data, see this page: https://climatedataportal.metoffice.gov.uk/pages/user-guide Please note, if viewing in ArcGIS Map Viewer, the map will default to ‘pr January’ values   Data source:  HadUK-Grid v1.1.0.0 (downloaded 11/03/2022)   Useful links Further information on HadUK-Grid Further information on understanding climate data within the Met Office Climate Data Portal