G'day Wavytone et al,
Here is a good site to check on the weather up at the Blue Mountains:
http://www.scenicworld.com.au/index....pper&Itemid=44
It is a remotely controlled camera at the Skyway cable car at Katoomba which you can toggle around for a real time view of the Megalong valley.
It's a good tool for planning on the spare of the moment.
Mental