When? It snows in winter but not always by far. Last 3 winters we had snow. 20 cms is A LOT and quite unusual. I bought winter tyres this year for the first time in my life. Winter is November-end of March more or less. This is a small country, there are weather differences but not huge differences. Have a look at weatherunderground.com or any other weather site and check out a bit of historical weather.
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