Precipitation and winds impart spatially and temporally variable thermodynamic signatures on surfaces. Here, we describe two new hotplate sensors, the DTI-pm and DTI-de, that sample energy flows using a discretized thermodynamic imaging (DTI) principle. Unlike prior single-element hotplate devices, DTI measurements are obtained at sufficiently high spatial resolution to separate component thermodynamic signatures. The DTI-pm is a sensor array of individually controlled micro-hotplates, each using pulse-width modulation to maintain a constant elevated temperature of each sensor element, measuring the power required to do so. The DTI-de uses an infrared camera that passively monitors radiative temperatures on a heated metal plate by exploiting the differential emissivity between metal and water; heat transfer physics is used to infer the power of thermodynamic cooling. Both techniques are shown here to be capable of measuring with exceptionally high accuracy and precision a wide range of precipitation characteristics, including mass, size, and the density of individual multi-phase hydrometeors, as well as continuous bulk precipitation rates and snow density. The DTI-de achieves a spatial resolution of 0.2 mm with a mass sensitivity of 1 <em>µ</em>g, while the DTI-pm provides a spatial resolution of 1 mm and a mass sensitivity of 0.5 <em>µ</em>g. Preliminary results suggest the potential for the DTI-pm and DTI-de to concurrently measure wind speed and direction.