Online Highways Home > Virginia > Mount Weather Weather Station of the U.S. Weather Service Located in Loudoun County, Virginia, Mount Weather is at an elevation of 1720 feet and was established as a weather station on 01 Aug 1948. From 1971 to 2000, the following average readings were recorded: - - - - - - - - - JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR Average High....... 36.5 39.1 47.4 58.4 67.3 75.4 79.9 78.6 71.9 60.9 50.6 41.1 58.9 Average Low........ 21.0 23.2 30.4 40.2 50.9 59.8 64.2 62.9 56.3 45.0 35.7 25.9 43.0 Monthly Precipitn.. 3.19 2.40 3.54 3.55 4.54 4.13 3.90 3.66 4.30 3.67 3.40 3.01 43.29 Heating Degree Days 1124 947 809 472 212 40 8 10 84 379 655 976 5716 Cooling Degree Days 0 0 0 0 30 118 227 188 57 5 0 0 625 See more Science. Other upcoming events include:

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