I lived in Skopje last year and skied here a fair bit.
Short drive from Skopje to Patishka Reka. You can continue on with a 4x4 from there to where the snow begins, sometimes right in town. There's a good, clear trail up through the timber to the plateau. Plenty of open slopes above for exploring.
This corner of Macedonia seems to get a lot of snow. The drainage faces directly north and is somewhat protected from the wind, helping it hold snow better than other areas. I have noticed some instability from time to time, so be careful!
OK, this may be the largest mountain in the country and the nearest one to the capital, but there's definitely no ski resort here :) I don't know if someone's off-road skiing there, but there's definitely no lifts or anything on this mountain. Anyway, I don't believe there are better conditions for a ski resort anywhere else in the country - last year for example, there was snow until July!
To summarize, I like the way that you offer weather forecast for this mountain, hopefully somebody can scratch their head and do something...