The steady-state distribution of oscillation energies for raindrops was computed for a balance between input energies from collisions and dissipation by viscosity. Calculations of the oscillations responses indicates that an appreciable fraction of large raindrops (≥ 3 mm diameter) in heavy rain showers are oscillating with axis ratio changes greater than 10%. Computations of the distribution averages for the axis ratio, backscatter ratio, and ZDR indicate increasingly significant deviations from values for static raindrop shapes with increasing rain rates.