13.9C here, making it my warmest May on record by 0.9C.
Also, it means that spring 2017 will now finish as my warmest spring on record too, with an average temperature of 10.39C. That beats spring 2011's 10.30C.
Will this be the warmest spring on record for the CET too?
Provisionally I have the Spring CET at 10.25C.
Previous highest was 10.24C in 2011. So it will be touch and go. Depends on the extent of the final adjustments to the May CET.
The Spring CET has only ever been above 10C on five previous occasions. Here are the top 6
2017 10.25C PROV
2011 10.24C
1893 10.20C
2007 10.10C
1945 10.07C
2014 10.03C