Denali
Weather station

The Japanese Alpine Club installed a meteorological station on a ridge near the summit of Denali at an elevation of 18,733 feet (5,710 m) in 1990. In 1998, this weather station was donated to the International Arctic Research Center at the University of Alaska Fairbanks. In June 2002, a weather station was placed at the 19,000-foot (5,800 m) level. This weather station was designed to transmit data in real-time for use by the climbing public and the science community. Since its establishment, annual upgrades to the equipment have been performed with instrumentation custom built for the extreme weather and altitude conditions. This weather station is the third-highest weather station in the world.

The weather station recorded a temperature of −75.5 °F (−59.7 °C) on December 1, 2003. On the previous day of November 30, 2003, a temperature of −74.4 °F (−59.1 °C) combined with a wind speed of 18.4 miles per hour (29.6 km/h) to produce a North American record windchill of −118.1 °F (−83.4 °C).

Even in July, this weather station has recorded temperatures as low as −22.9 °F (−30.5 °C) and windchills as low as −59.2 °F (−50.7 °C).
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