Confidence is high for a very cool period this weekend with temperatures falling below freezing overnight. The image below shows six different models, all are showing a very similar setup for this weekend.
You can see the cold air starts off way up in the Arctic circle over Russia. The cold polar air will warm up slightly on its journey towards the UK from the cold air source. If it was January, February we would be looking at some extreme cold temperatures but its April and we can expect daytimes maximum temperatures around 7 centigrade and falling down to possibly -2 centigrade overnight. So gardeners be aware.