The Lavra monk Theologos started a weather blog (weatherlavra.blogspot.gr) with a live weather webcam, that refreshes every 5 seconds (today 30/5 the camera is not working).
On YouTube you can have a look at the weather as it was on May 9th and 14 th (from 5.30 PM to 9.00 AM) (it goes with a lively music).
The site also has a rain radar of Chalkidiki:
and satelite images:
Theologos also has two other sites about Athos (in Greek), athosmount.blogspot.gr and he reported about the earthquake on his news site: athosnews.blogspot.gr. The pictures of monk Theologos are here on Flickr.
Wim, 29/5 (thanks Vasilis)
Athos - Agios Oros 
Our Italian reader RV just gave me this information: “I’m a friend of Mt. Athos and have to tell you that Jakobos Agihiografos died on 8 Maj 2014”. Is this really true, because new blogs can be red om his newsite: http://athosnews.blogspot.gr/!!!