Cumul.us is a new site where, among other things, you can register and predict what kind of weather your community will experience that day. You will then be given a score that will go up or down over a period of time. You’ll see what your grade is as a predictor of weather.
It could be a fun activity to help Beginning English Language Learners apply newly learned vocabulary (you choose from a list of words on a drop-down menu).
I’ve placed the link on my Examples of Student Work page under Student Weather.