After some early morning mist, most areas will be left fine and dry.
Records were broken in England and Wales, as temperatures edged towards 21C.
Monday was the warmest winter day on record.
The vernal equinox marks the first day of spring in the UK. Here is a short guide to why the event occurs and when the clocks go forward.
It may not not have felt like it when you woke up this morning to rain and grey skies, but Monday is the first day of spring.