IoM often misses the snow completely due to the warm moat we have around us, and depending on the wind direction anything we get can be quite localised, like just the southern tip or the north west coast or over the 'mountain road' from Ramsey to Douglas via snaefell above 600ft asl.
The effects on travel is that the mountain road just gets closed if there's more than 3 flakes fall as there are coastal routes available and hardly anyone is affected by the road closures (from Creg ny Baa to Ramsey usually, part of the TT race course and they don't want to damage the racing surface with machinery) and they only bother ploughing it when the thaw has set in. The problems with most commuting routes is that there are some hills on most which soon get blocked with slithering cars, buses etc., and with a large amount of the population working in the Douglas areas it can cause long backlogs to and from work.
I must say that last year was exceptional, so early, dry snow from the east for a change, (not the soggy wet stuff which just goes to slush and packed ice as we are usually just barely at freezing point), and down to sea level, and although I have a 4x4 it wasn't worth taking it out as the roads were gridlocked, I walked into town with a rucksack of weather gear to meet Mrs V and get her home from work. Next morning (sat) she set off like Nanook at 8am for the 2 mile walk through the snow to open up at work for 9.30 !
The local road salt stocks have been replenished ready for action and there is an increased interest in fitting winter tyres and a few places offering 'snow sox' but it will be seen if there is any less gridlock next time we see the white stuff.
Many years ago (too many !) when I travelled to work over the mountain road I often met sheets of frost in the mornings on the newly laid 'blaw knox' surface and had a set of studded tyres for my mini which I fitted at the first frosts and left on until it warmed up in the spring, it was uncanny how you just drove normally and smoothly and straight past people slithering about, I even towed an old chap in his A35 up hill on snow as he was stuck almost at the top and everyone else was about ½ mile behind at the bottom !
Just wondering if/what we'll get this winter, likely just a few flurries at a guess