cycling in shorts in 10 degrees?

[satans worm]

Looking to dust off the bike this weekend and explore my local surroundings for the first time(just moved to Bratislava) weather forecast is 10 degrees sunny intervals, I only have shorts and a long sleeve fox top, am I mad? Are my legs going to go numb?
If its tights only temp then I will scrap the idea and go out another time as I will need to mail order some from the UK.
Actually I've got no gloves either (spot the fair weather cyclist!)
Thanks