Hmm. Not sure where my post went!
I mainly use:
yr.no and mountain-forecast.com
The latter can be trickier if the mountain you want doesn't come up in the search. Just make sure you have the right mountain. Apparently there's a Mt Ossa near Georgetown as well.
On both sites, there's a forecast for the summit and for a lower altitude. Of course, anything can happen. But if the forecast is consistent for the few days ahead, and if the 2 sites agree with each other, the chances are pretty good that the forecast will be right.
https://www.mountain-forecast.com/peaks ... casts/1509