Visiting DPs in the Midlands - it's nearly November the clocks have gone back, and it's like midsummer. The winter-flowering heathers are flowering, the bumble-bees are bumbling and the butterflies are fluttering by. DF is out mowing the lawn in shorts and t-shirt. DD, with us from university for few days, is flitting about in just a sports bra and calf-length jeans, grumbling because she thought it was going to be cold and that she would need jumpers rather than vest tops, and complaining (tongue in cheek) that if I'd made her wear a vest in winter when she was little she would probably have brought one with her now. DM has deferred the roast lunch that she had planned, and we're having salad instead. Can someone please explain what is going on?