A widespread frost tonight. Mostly fine this weekend.
This Evening and Tonight:
Some showers will continue to affect easternmost areas tonight. Elsewhere it will become generally dry with clear periods. A widespread frost with a few fog patches, and the odd icy patch too. Breezy in the far north and far south.
Saturday:
Frost and fog clearing to leave a lot of fine weather, though cloud bubbling up to produce one or two showers. Patchy rain in the far north. Mostly light winds.
Outlook for Sunday to Tuesday:
Mostly dry, though fairly cloudy on Sunday. Becoming breezy on Monday and Tuesday. A few showers in the southwest, but increasing amounts of sunshine elsewhere, and slowly turning milder.
Updated:
UK long range weather forecast
High pressure is expected to be centred to the east of the UK initially, with a good deal of fine, dry and reasonably sunny weather in a south to southeasterly flow. Temperatures are expected to rise, to well above average in some areas. Later in the week there will likely be a gradual transition to less settled conditions from west to east, as low pressure becomes more dominant with an increasing chance of rain or showers by the weekend and into the final week of March, perhaps heavy in places. Temperatures, initially above average, will likely trend back closer to normal, although with more cloud this will tend to reduce the risk of frost to an extent.
Updated:
Confidence is naturally rather low, but blocked patterns are generally more favoured for the end of March and first part of April. This can lead to slow-moving areas of low and high pressure, and depending on their location can result in extended periods of either dry conditions or, perhaps more likely, wetter episodes in the form of rain or showers. Either way, whilst temperatures overall may be near average, given the time of year this type of regime tends to increase the chance of periods of below average temperatures at times.