June 2026 saw fairly standard conditions for the month on Grandfather Mountain, according to data recorded at the park’s official weather reporting stations.
The average high temperature for June 2026 was 65.64 degrees Fahrenheit, with an average low of 54.78 degrees and a mean of 60.71 degrees. The 70-year averages for June temperatures at Grandfather Mountain include an average high temperature of 67.5 degrees, an average low temperatures of 53.4 degrees and a mean of 60 degrees.
The warmest temperature recorded last month was 74.8 degrees on June 12. Grandfather’s record high temperature for June is 82 degrees, observed June 1, 2011.
June 3 saw the coldest temperature recorded last month with 42.3 degrees. The lowest temperature ever observed on Grandfather Mountain in the month of June is 31 degrees on June 1, 1966.
The weather station on the Mile High Swinging Bridge noted one day in June with a wind gust higher than 60 mph. On June 15, the weather station at the top recorded a wind gust of 60.4 mph, while the month’s highest recorded sustained wind speed clocked in at 43.5 mph that same day. The highest gust ever recorded on Grandfather Mountain was 124 mph, observed Feb. 25, 2019.
The weather station near the Swinging Bridge reported 3.91 inches of precipitation in June 2026. Precipitation at the top of the mountain includes rain and the liquid equivalent of any frozen precipitation (when applicable). Due to wind, snow depth is not recorded at the top.
Observations recorded near the park’s Wilson Center for Nature Discovery totaled 3.83 inches of precipitation. Precipitation is also measured at the latter location, as high winds can make it difficult to record accurate observations at the top.
The mountain’s rainiest June was recorded in 2019, when 15.94 inches were observed near the bridge. The driest June on record was observed in 1986, when .60 inches were measured at the top.
There were 13 days of at least trace amounts of recorded liquid precipitation (rain and the liquid equivalent of frozen precipitation, when applicable) for June 2026. The day last month with the highest amount of this precipitation observed was June 10, when .82 inches were recorded at the top. The day with the highest amount of precipitation observed on record for June is June 8, 1968, when the weather station noted 4.46 inches.
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 1956 by reporting weather data from locations near the Mile High Swinging Bridge and the Nature Museum (now the Wilson Center for Nature Discovery).
For more information on weather at Grandfather Mountain, visit www.grandfather.com/weather.