Currently 2.2° above the average for the month (10.2°c average maximum
temperature)

Are you sure about this Keith? Our average max is +12.9 C (average min
+2.9 C - lots of air frosts earlier in the month), giving a 24-hr temp
anomaly of -0.3 C. This is likely to turn positive before the end of
the month one thinks.

Regards,
Richard.

Dartington, South Hams.