Only a few Easters have had a mean CET of 10 deg. C. or greater:
14.5 1949 15th-18th April 13.6 1926 2nd-5th April 12.1 1984
20th-23rd April 11.8 1987 17th-20th April 11.4 1979 13th-16th
April; 1992 2nd-5th April 11.3 1912 5th-8th April 11.1 1992
17th-20th April 1992 10.7 1955 8th-11th April; 1976 16th-19th
April 10.6 1924 18th-21st April; 1943 23rd-26th April; 1952
11th-14th April 10.5 2003 18th-21st April 10.4 1935 19th-22nd
April 10.3 1972 31st March-3rd April 10.1 1928 6th-9th April
10.0 1909 9th-12th April; 1919 18th-21st April; 1945 30th
March-2nd April; 2000 21st-24th April Thus 21 out of 106 years
(about 1 year in 5) were >= 10 deg. C., but only 8 were warmer
than 11 deg. C. and 3 greater than 12 deg, C.; 1949 and 1926
were well ahead. Note that all these are entirely in April
except 1972 (31st March to 3rd April). The warmest Easter which
was entirely in March was 9.8 deg. C. in 1948 (26th-29th March);
only 2005 (9.5 25th-28th March) and 1940 (9.4 22nd-25th March)
had a mean CET of 9.0 deg. C. or gre