So how common are 30+C temperatures in our region?

There have been 128 such days in Coventry since 1892, just 0.003% of days in that period! There have been 3 30+C days during May in the past 125 years, 19 in June, 52 in July, 49 in August and 5 during September.

As you can see, they have been much regular occurrences in the past than since the Millennium!