So, what time does the set each season?
Actually, I'd say three is too early. I've found a website that says today the sun will rise at 7.56 in London and set at 16.27, and that today is 2 minutes and 37 seconds longer than yesterday. In Glasgow (in Scotland) the sun will rise at 8.33 and set at 16.23. On this website you can change location, time and date, but for the UK, it only does the capitals. I can PM you the link if you want. The clocks change around end of October and the end of March. In summer it gets darker later, and as welshdevondragon says, Scotland stays lighter for longer than it does down south because it's so much furthur north.
Snow in Britain during winter is normal, yes? When does it usually start? (Late/early December? January?) Also, how cold does it need to be?
Well, it's becomming normal, and as welshdevondragon said, we've had (what we consider to be) deep snow for the past three years that seems to bring the country to a standstill because we're just not prepared for it. We had heavy snow before Christmas where I'm from in Somerset in the south-west, and the rubbish men only came last week for the first time since the snow. Things get really, really backed up.
However, when I was younger, I remember it snowing more. My birthday is in February and we always used to go out and build snowmen for it. The day my sister was born in 1994 it was snowing. But it was only a couple of inches, I'd say three at the most, and not all areas are affected by it at the same time.
As for when it starts, it seems to vary. As I've said, when I was younger it was late January/early Feb, but maybe because I remember it more because that's when my birthday is. This year the snow came early; we had it in Leeds at the end of November and again in Somerset in the middle of December. Last year most of the country had it from mid December, but the West Country from early January. It depends on where in the country you are, I think. But I'd say nowadays anywhere from late November to early Feb.
what scale do you use?
Officially we use Celcius, but a lot of people who are older use Farenheit because that's what they grew up with. I don't understand Farenheit, but my parents do.
How hot does it get in Summer? And What sort of heat?
Probably not what you Australians would call hot. Lower than thirty degrees Celcius, certainly, but a nice, warm summer's day would be around 26/27 degrees. And as for the type of heat, I'm really not sure. Normal heat? I don't think it's ever what you call humid, except for when there's a storm brewing. I think probably dry, but it's never really hot enough to be incredibly dry heat.
an example of the temperature and weather of a 'normal' Summer, Autumn, Winter, and Spring day?
Well, I don't think there's anything that's classed as 'normal summer's day' here The weather is unpredictable and it can be wonderfully sunny in the morning and cloudy and threatening to rain by the afternoon. Your best bet is to probably go to the Met Office website.
Another thing to add is that no matter what the time of year, it gets very cold at night. It could have been a scorching summer's day, but you'd need a cardigan or jumper on if you went outside at night.