This data release contains hourly means of climatological data collected by the U.S. Geological Survey (USGS) from 10/1/1991 to 9/30/2019 at three weather stations in the Loch Vale watershed in Rocky Mountain National Park (RMNP), Colorado. In order of increasing elevation, the three weather stations are Loch Vale meteorological station at RMNP, Colo. (Main weather station, USGS station 401719105394311) at an elevation of 2,925 meters (m) above North American Vertical Datum of 1988 (NAVD 88), Andrews Creek meteorological station at RMNP, Colo. (Andrews Creek weather station, USGS station 401723105400101) at an elevation of 2,990 m above NAVD 88 and Sharkstooth meteorological station at RMNP, Colo. (Sharkstooth weather station, USGS station 401638105402601) at an elevation of 3,500 m above NAVD 88. At the Main weather station, air temperature, humidity, and wind speed and direction were measured at 2-m and 6-m heights above land surface. The four components of net radiation (incoming shortwave, outgoing shortwave, incoming longwave, and outgoing longwave) were measured at the 6-m height. At the Andrews Creek weather station, air temperature, humidity, wind speed and direction, snow depth, and incoming shortwave radiation were measured at 4 m above land surface. At the Sharkstooth weather station, air temperature, humidity, wind speed and direction, and incoming shortwave radiation were measured at 3 m above land surface.