This paper investigates static behavior of multilayered functionally grated piezoelectric plates under thermal loads. The plate with functionally graded piezoelectric material (FGPM) is assumed to be graded through the thickness by a simple power law distribution in terms of the volume fractions of the constituents. Considering the thermal coefficients of piezoelectric material in the constitutive equations (the terms that will couple temperature effects to the piezoelectric properties, named pyroelectric constants) and using the kinematic assumptions of first-order shear plate theory (FSDT), the constitutive equation of FGP plate is written. Then, by using principle of virtual work, the governing equations of a FGP plate is obtained. These equations are solved by finite element method using eight node shell element. Functionally graded piezoelectric plate under static loading, different layers and boundary conditions are considered and results in various thermal loadings have been obtained. Deflection and voltage results for different power law exponent and different boundary conditions are shown. In this paper, the influence of power law index on the static behavior of FGPM plate (including deflection and voltage) under thermal loading is investigated. These responses can be used as a criteria for design of FGP sensors and actuators in the thermal environment.