Display Screen or Portion Thereof with a Graphical User Interface for Displaying Agricultural Data

The file of this patent contains a least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee. FIG. 1 is a front view of a first embodiment of a display screen or portion thereof with a graphical user interface for displaying agricultural data in accordance with the claimed design; FIG. 2 is a front view of a second embodiment of a display screen or portion thereof with a graphical user interface for displaying agricultural data in accordance with the claimed design; and, FIG. 3 is a front view of a third embodiment of a display screen or portion thereof with a graphical user interface for displaying agricultural data in accordance with the claimed design. The outermost broken lines in the figures show a display screen or portion thereof, and form no part of the claimed design.