In reply to murilolessa:
Today it is soaking, with light persistent rain in the Engadine. The weather for the next week is forecast to be similar.
While I've met someone who has done the ridge in winter, I suspect conditions over the next while will be horrible, neither summer nor winter, so lashings of rain, sleet and snow.
Sorry not to be able to provide more heartening information but I hope this helps.
Luke