Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Commercial
Flight Crew Last 90 Days 6; Flight Crew Total 1500; Flight Crew Type 500
Other / Unknown; Human-Machine Interface
Ground Event / Encounter Loss Of Aircraft Control; Ground Event / Encounter Object; Ground Excursion Runway
Aircraft Aircraft Damaged; Flight Crew Regained Aircraft Control
Human Factors; Weather
After a normal approach and landing; the aircraft suddenly veered left across the runway. I momentarily recovered control of the aircraft again and again it suddenly veered to the left off the runway. I was unable to recover control of the aircraft back onto the runway. The aircraft struck a taxi identifier sign and a taxi light. The aircraft received some minor damage to the left wing and the propeller.Since a glider service was towing gliders aloft from that runway and other aircraft were landing/departing that same runway; I assumed this runway would be the active runway for the airport. A windsock is located on the terminal building and showed a minimal crosswind at the airport. After the incident the pilot and passenger could feel no crosswind after disembarking from the aircraft. At the time; we were told that an aircraft had landed minutes before and had a similar runway incident.I would appear that a gust of wind off nearby hills caused my aircraft and others to be pushed left across Runway 32. It would probably help others; in the future; to have a windsock located near the touchdown point of Runway 32.
General aviation pilot reports losing control during landing roll and departing the runway; possibly due to an undetected crosswind.