The pilot reported that while conducting a sightseeing flight, the surface wind increased earlier than forecast. He decided to terminate the flight and make a high wind landing. He briefed his passengers that they were going to land quickly and drag to a stop. He reminded them to stay in the basket and hold on. The balloon skipped twice after contacting the ground and then dragged to a stop. One of the passengers was ejected and her hair was caught under the basket. She sustained minor injuries. Two other passengers remained in the basket but sustained serious injuries. The pilot sustained minor injuries and the remaining three passengers were not injured. The pilot reported there were no mechanical malfunctions or failures with the balloon that would have precluded normal operation. Prior to the flight, the pilot obtained a weather brief, and the weather forecast reported a front to pass around 0800. A terminal aerodrome forecast (TAF) for Rocky Mountain Metro Airport (BJC) about 7 miles southwest of Erie, Colorado, forecast wind to be out of the northwest at 7 knots at 0300 and then shift to wind out of the northeast at 12 knots around 0800. When the pilot launched the balloon in Erie at 0638, the wind was calm. About half an hour after launch, reported surface wind in Erie was out of the northeast at 5 knots gusting 15 knots.