The F6 forms since Jan 2005 are available on the weather page here, but does anyone know how to get daily data from before then? I tried the NCDC website, which has a ton of info that's available in comma-delimited form and can be brought right into a spreadsheet--but they didn't have anything listed for Mt. Washington for some reason, at least not that I could find.
I emailed the observatory, and they gave some help in terms of where I might find this info (likely for a fee), but I'm hoping that someone out there has already found the old daily data, or at least knows where I can find it. I'm interested in all the data for as far back as it's been kept.