I love flying in Scotland, best scenery, nicest people, good food (well, sometimes) - if only there was any work for flight test engineers up there I'd be up like a shot to stay (although Mrs.G, who was born in ZA and considers the South of England rather chilly for much of the year may disagree with me).
To some extent you don't need a weather forecast so much as a calendar - the weather is much more seasonal than down South. But to a very large extent it's also very localised - all that high ground, water, odd ocean currents, etc. mean that local knowledge is everything. I won't claim to have done enough flying in Scotland (sadly) to have developed that level of knowledge - but I've learned enough to know the importance of virtually every time you plan to fly, finding the most experienced local you can find and asking their opinion.
The keen local aviators tend to run their lives on the basis of being able to drop everything and go flying as soon as the weather becomes flyable - but what's wrong with that?
Safety needs to be a bigger issue - you'll spend much more time over inhospitable terrain than you would in most of England - RT, flight plans, dinghys, etc. become rather more critical.
Another interesting point is that the airfields are rather more widely spaced - so they tend to be less "specialist", and in a light aircraft you mix with big stuff more than in the South.
So, it needs a different approach - but if you're looking to learn anyway you'll pick that up from the experienced local instructors.
G