This is one of the most common questions our hostels get asked and one of the hardest to answer!
It depends on where you're staying and what time of year you're visiting. Our weather is notoriously changeable. You're likely to experience four seasons in one day so come prepared and you won't be disappointed!
VisitScotland has a good introduction to Scotland's climate and weather.
Check the Met Office for weather forecasts for the place you're visiting.
Check the Met Office or Mountain Weather Information Service for specialist weather forecasts for mountain areas in Scotland.
Be prepared if you're heading into the mountains in the winter. Check the Scottish Avalanche Information Service for avalanche conditions.