I get teary eyed also in certain temperatures - mostly the cooler 50 - 60 degree days, despite wearing sun glasses.

There is a type of gopggles/glasses I used on a 1250 mile horse ride I did across mostly desert (NV, UT, WY and NE) called CLICs. Find them here: www.sportclic.com scroll down to the goggles. I ruined mine on the trip - got scratched, but I might try another pair for biking. I think you can get them on ebay for less.

Laura