Evert Wesker wrote:

However, in The Netherlands, a country with a very moderate climate,
it is! On the morning of March 4th a temperature of -20.7 C was
recorded as a national low. Today a national high of 21.7 C was
rercorded. A swing of over 42 degrees Celsius.

It is a new national record - this temperature swing within a calender
month.

Evert, I'm not sure what you mean.. do you mean that the 21.7C was the
highest max. ever recorded for March? At what station because according
to my data Gilze-Rijen reported 20.9C (which is still quite nice).
Regarding to the absolute highest max, De Bilt reported 21.8C on
1989-03-28. Gilze-Rijen reported 22.1C on the that day.

But indeed, yesterday was a nice day..

Richard