I'd definitely consider driving around the weather

raintoday.co.uk will give you a good idea of where's gona be hit with what, it looks clear today - i'd be off to Applecross asap
If stuck for something to do because of bad weather, it is touristy but surprisingly well decked out and quite interesting to tour - Eilean Donan Castle, just right off the skye bridge (reasonable quality cafe there too). Equally the ferry over to Mallaig (if its rough, youll want good sea legs), and grab some fish an chips.