It reached 4.9°C today here. Decently cold for early March, but hardly unheard of by any means. It's a definite sign that we're moving into spring now, as the current 850s would have likely produced a 0/1°C day in December or January. I think that's the thing with March. The solar input is rapidly increasing; the Sun is nearly three times as high as it was on the winter solstice and daylight is over 11 hours now, so it will lift the temperatures regardless of the air mass. To see 0/1°C days now, you need brutal cold like early March 2018, not "bog-standard" cold.
It's also why I 'd rather use the meteorological seasons to the astronomical ones. Cold weather now has a completely different feel to cold weather in early December. At this time of year, you can feel the strength of the Sun, whereas in December you very rarely can.
Originally Posted by: Bolty