June 2025 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 2025 was 66.94 degrees Fahrenheit, with an average low of 57.08 degrees and a mean of 62.01 degrees.
The warmest temperature recorded last month was 77.2 degrees on June 24, almost five degrees shy of the mountain’s record June high of 82 degrees, observed June 1, 2011, and June 9, 2008.
Generally, June sees spring-like weather conditions continue on Grandfather Mountain, with slightly warmer, summertime temperatures starting to arrive. June 1 saw the coldest temperature recorded last month with 47.5 degrees. The lowest temperature ever observed on Grandfather Mountain in the month of June (not counting wind chill) was 31 degrees on both June 1, 1966, and June 3, 1956.
The weather station on the Mile High Swinging Bridge did not note any days in June with a wind gust higher than 60 mph. The highest gust ever recorded on Grandfather Mountain was 124 mph, observed Feb. 25, 2019.
The weather station near the Swinging Bridge reported 4.99 inches of precipitation in June 2025. Precipitation at the top of the mountain includes rain and the liquid equivalent of any frozen precipitation (when applicable).
Observations recorded near the park’s Wilson Center for Nature Discovery totaled 5.05 inches of precipitation for the month. 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 0.60 inches were measured at the top.
There were 22 days of at least trace amounts of recorded liquid precipitation (rain and the liquid equivalent of frozen precipitation, when applicable) for June 2025. The record number of days for the month of June is 23 days, observed in 1994, 1995 and 1997. Twenty-two days of precipitation were also recorded in 1976 and 2023.
The day last month with the highest amount of this precipitation observed was June 15, when 0.72 inches were recorded at the top. The day with the highest amount of precipitation observed on record for June was 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 1955 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.