This month had a total rainfall of 16.4mm in the end, thanks mainly to the Bank Holiday Monday washout when 8.7mm that fell on the 30th, the wettest day since 17th January. It was slow and steady rain, falling over several hours that will have done much more good than a short sharp burst.
What has made this three month period dry spell so pronounced is that March (3.0mm) and April (1.7mm) were also extremely dry months in Cambridge, and give us a total of only 21.1mm for this usually intense period of plant growth and horticultural activity. The winds have not helped the situation by enhancing the drying process.
There were several ground frosts in May and a -0.5c in the air on the 4th, hopefully that should be the last of those for a few months.