In reply to Pietrach:
I dare say you definitions of thin and warm/not too warm wouldn't be the same as mine, but I seem to do okay with some cosy feeling synthetic gloves which mimic the woolen gloves of old which cost a few pounds from garages and news agents and chemists and similar, with the fabric being around 3mm thick.
I should say people generally comment on how warm my hands are when it's cold, and how warm a seat I've just been sitting in is, so I possibly run warmer than some, but those gloves let me have warmth in my hands even if it's 'wet warmth' after them being in contact with snow.
I've also go on well with a pair of stretchy 'magic gloves' (which cost a pound) inside a thin pair of Seal Skinz waterproof gloves, which can be found on sale for £20. Possibly you'd need to try things on in shops to try and guage how warm they'll be somewhere colder given your general hand warmth.
This would be in temperatues down to minus ten-ish in the snow when high up, or lower with the wind blowing too. My brother gets colder hands than me and has commented that he'd have cold hands in the gloves I've worn at minus ten. I seem to take after my dad while he takes after my mum.
Post edited at 13:00