The period of record for Roan is also incomplete, but IIRC it goes back to 1999. I’ll grab the data and check tomorrow, when I’m not half asleep.
170 does seem high for the location.
The record high gust at Grandfather Mountain is 121 mph on 12/21/2013. A reported 200 mph was found to be erroneous. So were other similar high readings of the era.
Since the location of the anemometer at Grandfather Mountain was corrected, the record has been 121 mph.
Sucks these stations aren’t maintained very well.
For mountain top locations, Mount Washington and Mount Locke (Texas) are really the only stations that have a long and complete period of record, but Mount Locke doesn't record wind data. Mount Mansfield, followed closely by Grandfather Mountain would be next.
Mount LaConte and Mitchell have somewhat long periods of record.
Out west, Blowhard Mountain Utah has a period of record 42 years (1964-2006), but the readings between 1997 and 2006 went haywire, so I'd only trust the readings for 1964-1996 (32 years). By Western standards though, the mountain isn't that high (10,700 feet). I don't know of wind data though.
Next on the list for Western mountains would be Mount Evans with 27 years of data, making it the longest period of record for a mountain top location next to Blowhard Mountain, but the data is hard to dig up (I have only been able to dig up annual averages and extremes).
Climax Colorado at Fremont Pass does have a long period of record, but it's at a pass rather than mountain top.
Berthoud Pass (11,315) and White Mountain 2 (12,470) have 25 and 35 years of data respectively, but although pretty high, they aren't mountain tops. Mauna Loa slope Observatory also has a pretty long period of record, but also isn't at the summit.
Most other mountain tops have data of only a few decades or less.
Coldest temperature thus far in 2018: -26 on 2/21
Warmest temperature thus far in 2018: 99 on 7/8 (All time record high)
Precip thus far in 2018: 11.01 inches
Snowfall thus far in 2018: 38.7 inches
Last frost of early summer: 7/1
First frost of late summer: 8/29
Last snow of late spring: 5/1
First snow of early fall: 10/6