An historical perspective of the climate statistics for Coventry during December 2020

Temperature

With a mean monthly temperature of 4.8C, this has been the tenth warmer than average December in succession in Coventry, albeit only just at 0.2C milder than 30-year Bablake averages 1981-2010.

This decade (5.9C) has seen average December temperatures 1.8C warmer than the first decade of the 21stcentury (2001-2010 = 4.1C). It has been the warmest December decade in records dating back into the 19th century, with 1971-1980 the previous record at 5.2C.

Nevertheless, it has been our coolest December in Coventry since 2012 (4.7C), with only 7 December months cooler than 2020 since the Millennium ( 2001, 2003, 2005, 2008, 2009, 2010, 2012).

Rainfall

It has been a wet final quarter of the year in Coventry with 72 rain days in the city, out of 92 days, since early October.

It has been our wettest December (97.8mm) since 2015 (102.4mm), with 159% of average rainfall recorded at Bablake during the month.

Only 4 December months have been wetter than December 2020 in Coventry since 1979, that is in the past 41 years.

With 2 days of snow falling late in the month, it has been the snowiest December in Coventry since 2017 (9 days), though only one December (7 days in 2017) has seen any snow lying in the city during December in the past 10 years.

December snowfall does seem to be coming more of a rarity these days with just an average of 1.8 snow days in this current decade, compared to 3.4 1981-2010

Sunshine

There has been a steady increase in December sunshine totals in Coventry since the 1980s (45.7hr), with 36% more sunshine recorded in the city this decade (2011-2020 = 62.2hr).

Even so, this has been our dullest December in Coventry (56.2hr) since 2015 (41.1hr), with 10 days without any sunshine during the month.

Although close to average sunshine for December (101%), only three December months have recorded less sunshine than this year in the past 22 years (2002, 2006, 2015).

Interestingly, we had 2 mornings of fog at 0900hr during the month in Coventry, the highest number of December ‘fog days’ since 2010 (3).

As an aside, this was the windiest December in Coventry since 2008.