The weather this weekend in much of Colorado looks kind of iffy, but for the Tetons it looks perfect.
Grand Teton summit area forecast:
http://forecast.weather.gov/MapClick.ph ... BdC1PldWgY
The web cam indicates pretty dry conditions right now (though some precip might fall between now and then, but it doesn't look like much):
http://www.jacksonholenet.com/webcams/e ... _butte.php
As of right now they are predicting 0% chance of precip for both days this weekend.
I'd really like to climb the Grand Teton if I can find another person.