Geological storage of CO2, enhanced oil recovery, geothermal energy, etc., involve heating and cooling of subsurface formations, which in turn results in changes in their geomechanical characteristics. To monitor these changes, at laboratory scale experimentation, electrical properties obtained through impedance spectroscopy appear to be appropriate. However, as very few studies in this context exist in the literature, it becomes mandatory to develop a proof of concept by conducting intense laboratory investigations on mock geomaterials (viz., dry and water saturated sands). This is where the precursor to these studies is establishment of the influence of temperature on the electrical properties of the geomaterials exposed to various geoenvironmental conditions prevailing in such formations. With this in view, a laboratory setup was fabricated and employed for establishing the changes undergone by the geomaterials during the heating and cooling cycles and its imprints in the impedance spectra. It is believed that such a futuristic exercise would prove to be a stepping stone in developing the sensors for in situ monitoring of the changes undergone by the geomaterials present in reservoir formations.