Functionally graded materials are microscopically heterogeneous advanced composite materials whose material property varies gradually in different directions. These functionally graded materials are composed of two distinct isotropic materials, predominantly metal and ceramic. The metal component provides superior mechanical strength and toughness, and the ceramic component incorporates excellent thermal and corrosion resistance. FGMs have applications in various engineering fields, including aerospace, aviation, the automotive industry, medicines, microelectronics, and nuclear power plants. In the proposed research, the FG plate is developed in COMSOL Multiphysics, a FE software, by employing first-order shear deformation theory. The rule of mixture technique is used to determine the temperature-dependent material characteristics of the plate, and the power law function is utilized to determine the alteration of these material properties anywhere along the plate’s thickness direction. Comparatively, it is observed that the findings of the present research significantly match the layer-wise finite element formulation available in published literature. Thermal loading, boundary conditions, and the power law index were found to have a substantial effect on the eigen frequencies of the FGM plate. Forced vibration analysis is also done in order to obtain displacement and velocity graphs of the FGM plate by exciting it by a harmonic point load of 1 N. This present research article discourses the application of COMSOL Multiphysics in modeling and analyzing the FG plate in a thermal environment. Several detailed parametric investigations, including temperature variation, different boundary conditions, and volume fraction index variation, are presented in this research work.