The pilot and his passengers had arranged to fly to Wagga Wagga to attend an agricultural seminar. He had flown the aircraft from his home base to spend the night at Melrose, with a friend, before departing the following morning. Prior to DEPARTURE, the pilot obtained a weather forecast for the route to be flown. He then submitted flight details that indicated the flight would be conducted in accordance with visual flight rules. The aircraft was later observed to take-off and head towards the north-east. Approximately 40 minutes after the aircraft departed the wreckage was sighted by a passing motorist. Ground marks indicate that the aircraft had struck the ground while heading in a north-westerly direction. Both the forecast and actual weather conditions at the time of DEPARTURE and the time of the accident indicated the presence of low cloud, poor visibility and rain in the area. These conditions were below those required for flight in accordance with visual flight rules. An inspection of the wreckage revealed that the aircraft had struck the ground at a relatively low forward speed between two areas of rising terrain. No fault was found with the aircraft that could have contributed to the occurrence.