Here is the latest CET table since 1950. I have updated the colour coding to show months with a CET of 1.5C or more above or below the 1971-2000 mean (darker orange and blue respectively) as well as those at 0.5C above or below (light orange and blue).
Those months highlighted in red indicate the record CET for that month.
The period Apr - Jul 2018 is the first ever period since 1950 where we have had four consecutive months more than 1.5C above the mean. There are three instances with three consecutive months more than 1.5C above the mean but all were during the winter / early spring. They are Jan-Mar 1990, Dec 1988 - Feb 1989 and Feb - Apr 1961.
There is also one instance of four consecutive months more than 1.5C below the 1971-2000 mean which is Sep - Dec 1952.
Other interesting features are the low number of warmer than average months in Jul and Aug (and at the same time a high number of colder years for those months), the lack of colder June's, the number of very warm Octobers, and the number of very cold Decembers and March's. January and February have a significant number of both warm and cold months (and a similar number of each - although since 1988 there have only been 4 very cold months but 17 very warm months).
For the period 1950-1988 there were on average 2.9 months at 0.5C or more above average and 4.8 months below average. For the period since 1989 the equivalent figures are 5.6 and 2.3 months. So a very big difference.
7 of the 12 months (including all months from Jul - Dec) set their current CET record since 1994.
For the annual data I have used a range of 1C or more for the very warm, very cold category rather than 1.5C (which would just give zero returns).
August 2018 could be the first month this year that is within 0.5C of the mean. We need to finish at 16.8C or higher to be at 0.5C or more.
CET TABLE
Originally Posted by: Global Warming