The weatherability of the practical use plasma actuator electrode, produced by Asahi Rubber Inc., was studied using the natural snow wind facility of the Hokkaido University of Science. NACA0015 test blade of the chord length c of 300mm and span width of 790mm was manufactured using a 3D-printer. Wind tests were down under the angle of the attack of the blade was fixed at 15 degrees and flow velocity of both U=3m/s and 5m/s. PIV measurements were conducted on various plasma actuation conditions using natural snowflakes as the tracer. It became clear some snowflakes were jumped from the suction side of the blade and flow away. The trace of the snowflake is not completely coincident with the airflow particle path. When the actuator was driven under the condition of St=fc/U=1 and Duty=1%, movement of snowflakes was controlled the most effectively and snowflakes could not reach the trailing edge of the suction side of the blade. Snow deposit tests were also carried out. It became clear that snow deposition was started from the trading edge of the blade and after reaching the leading edge of the blade, it spread over the whole suction region of the blade. Under snowfall conditions, the practical use plasma electrode has suffered no damage and operated stably.