Data recorded at the official National Weather Service reporting station at Grandfather Mountain’s Mile High Swinging Bridge indicated average June weather at the Linville, N.C., nature park.

The lowest temperature observed in June 2021 was 46° Fahrenheit on June 1, 2 and 17. The lowest temperature ever observed on Grandfather Mountain in the month of June was 31° on June 1, 1956 and June 3, 1966.

The warmest day recorded in June 2021 was 75° on June 22 — seven degrees shy of the mountain’s record June high of 82°, recorded June 9, 2008 and June 1, 2011.

The average high temperature for the month was 64.2°, with an average low of 54.2°, for a May 2021 mean of 59.2°.

On June 21, the station recorded a wind gust of 59.7 mph, while the highest sustained wind speed clocked in at 48.9 mph on June 15.

As observed at the park’s nature museum, the mountain saw 6.19 inches of precipitation in June. Precipitation is measured at this lower elevation, as high winds make it difficult to record accurate observations at the top.

The mountain’s rainiest June was recorded in 1957, when 15.79 inches of rain were observed. The driest June on record was recorded in 1986, when only .6 of an inch was measured. The park counted 16 total days of precipitation for the month, compared to the park’s record high of 23 days in 1994, 1995 and 1997 and record low of six days in 1959.

Weather Reporting

The Grandfather Mountain Stewardship Foundation records and reports data in two different ways:

  • The park maintains an automated weather station at the top of the Mile High Swinging Bridge. The N.C. State Climate Office assists the foundation in calibrating the machines and ensuring overall accuracy of data.

  • Grandfather Mountain has been an active member of the National Oceanic and Atmospheric Administration’s (NOAA) Cooperative Observer Program since 1955 by reporting daily temperature, precipitation and weather events from locations near the Mile High Swinging Bridge and the Nature Museum.

For more information on weather at Grandfather Mountain, visit http://bit.ly/gfmweather.

The nonprofit Grandfather Mountain Stewardship Foundation strives to inspire conservation of the natural world by helping guests explore, understand and value the wonders of Grandfather Mountain. For more information, call 800-468-7325, or click here to book a trip.