A rain gauge that is resistant to damage from freezing water. The gauge includes a collector defining an open top vessel with a closed bottom for collecting water. The collector includes a plurality of tapered and curved sidewalls with curved corners connecting the sidewalls, the curved sidewalls having a direction of curvature and the curved corners having a direction of curvature opposite the direction of curvature of the curved sidewalls. The curved sidewalls tend to flex sufficiently when water collected therein freezes and expands, and thereby resists breakage from freezing of collected water.