Weather in the Scottish Highlands is notoriously unpredictable, with average temperatures in October ranging from the low 40s °F (~5°C) to the mid-high 50s (~15°C). We do not have a dress code for the wedding, but as we are planning for an outdoor ceremony (weather permitting), we recommend that guests wear layers that will keep them warm and dry, and sensible footwear that will provide traction on potentially slippery or uneven terrain.