At 1110 eastern daylight time, a Cessna 310R struck a snow bank after the pilot lost control while landing on runway 4 at St. Clair County Airport. The pilot and passenger were not injured. The pilot stated during the landing there was almost no traction between the airplane and the runway and the airplane slid off the left side of the runway. The pilot said the AWOS was broadcasting a notice to airmen that gave runway friction readings of 33, 35, and 36.