Frost free days [Archive] - Mount Washington Observatory Forums

loafer89

10-06-2006, 06:47 PM

What is the longest stretch of above freezing days that has been experienced at the summit?

nevis_highwire

10-07-2006, 11:20 AM

Interesting question. I just did some quick research on wunderground.com. For 2006 Mount Washington was at or above 32 from May 26th thru September 9th.

Check it out: Mount Washington Data (http://www.wunderground.com/history/airport/KMWN/2006/5/1/CustomHistory.html?dayend=7&monthend=10&yearend=2006&req_city=NA&req_state=NA&req_statename=NA)

Mike D

10-07-2006, 01:38 PM

Hmm, on August 11 there was major icing on the summit. How could this be?

nevis_highwire

10-07-2006, 02:16 PM

Hmm, on August 11 there was major icing on the summit. How could this be?

That's what I thought. I excluded everything that was 32 and above as frost free. But this includes 31.5-31.9 that got rounded to 32 so my method stinks.