LINVILLE â Data recorded at the official National Weather Service reporting station at Grandfather Mountainâs Mile High Swinging Bridge indicated average March weather at the Linville nature park. The lowest temperature observed was 17° Fahrenheit on both March 6 and 7, with the lowest wind chill at -1.7 on March 2. On March 28, the station recorded a wind gust of 83.7 mph, while the highest sustained wind speed clocked in at 69 mph on March 1. The lowest recorded temperature ever observed in the month of March on Grandfather Mountain was -9° on March 9, 1996. The warmest day recorded in March 2021 was 64° on March 27, eight degrees shy of the mountainâs record March high of 72°, recorded March 30, 1985.