BBC monthly outlook
Monday 26 March—Sunday 1 April
Turning colder again ... but will there be snow?
After a cold start on Monday with local fog, many areas will have sunny spells before cloud and rain approach from the west later on. Widespread rain on Monday night, the rain could be heavy for many with sleet and snow on the high ground in Scotland.
Through Tuesday and Wednesday there will be showers or rain at times for many, wintry over northern hills, but some brighter interludes are possible too. It will start to feel colder again and there is a risk of gales for the Northern Isles on Tuesday.
For the second half of next week and into the Easter period the risk of significant cold and snowfall has reduced over the last few days. However, the jet stream will be meandering well to the south of the UK at times, keeping conditions fairly chilly and there will be some rain at times for most.
Wintry precipitation at times in the north but predominantly over hills.
Monday 2 April—Sunday 8 April
Any signs of Spring?
Heading through the first half of April, weather models are showing rather differing solutions for the synoptic pattern around Europe. This does reduce confidence levels, but nonetheless it seems reasonably likely that there will be high pressure to the west of the UK a times whilst low pressure circulates more frequently over mainland Europe. This will likely force further incursions of cold air from the north on occasion, maintaining the below average temperatures that have been a near constant feature so far in spring. The high pressure should prevent any deep low pressure areas from impacting from the UK through this period ensuring a lack of stormy weather, but this doesn't mean that unsettled conditions won't prevail.
Monday 9 April—Sunday 15 April
A change of type
Heading towards mid-April, there could be somewhat of a pattern change as high pressure that was to the west retreats south slightly, becoming centred closer to SE Europe. This may allow low pressure areas to track more readily into the North Sea/Scandinavia region for a time, thus the greatest chance of wet and breezy weather for northern and eastern parts of the UK. Whilst temperatures will probably still be slightly below average, there should be some intrusions of milder air on occasion as winds swing to the west.
Next Update
Winter appears to be slow to lose its grip on the UK this year. We will be looking for any indications of any drier, milder and calmer interludes of weather going into the second half of April or will it be cool and unsettled?
https://www.bbc.co.uk/weather/outlook