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

Temperature

There has been some modest warming during January in Coventry since the Millennium, with mean monthly temperatures (4.7C) having risen by 0.4C compared to 30-year averages from the end of the 20th century (1971-2000).

However, with a mean monthly temperature of 6.5ºC, 2.1ºC higher than the 1981-2010 average, January 2020 has come out as a relatively warm winter month, with just five January months warmer than this since 1892:

7.9C     1916

7.2C     1921

7.0C      2007

6.9C     1974, 1983

6.5C     1990, 2008, 2020

It has been then the warmest January since 2007 (7.0C); just for the record, the warmest January on record saw mean monthly temperatures of 7.4C in 1916.

There were just 3 air frosts during January 2020, the lowest number of air frosts in Coventry in any January since 1983 (2), with January 1916 also recording just two air frosts.

With just 10 ground frosts during the month, this was the lowest number of ground frosts in Coventry since before 1892, though there are some gaps in city ground frost records.

20ththe coldest night of the month recorded a minimum temperature of -1.2C, making this the highest monthly minimum since 1923 (-0.8C).

23rd, 28th the coldest days of the month registered a maximum temperature of 6.7C; this is the highest such value in Coventry since before 1892, the previous high was 6.2C in 1916.

Rainfall

There has been a steady 19% increase in January rainfall, as measured by 30-year averages, since the middle of the 20th century in Coventry.

However, although there were 19 rain days in Coventry during January 2020, the monthly rainfall total (63.8mm) was close to normal with 107% of the 1981-2010 city average.

There was just one ‘snow day’ in January 2020, albeit with just a few snowflakes around 0900hr on the 28th day of the month. This is the lowest number of snow days in any January in Coventry since 2002 (0), though since 1892, there have been 16 Januarys without any snow: 1986, 1898, 1906, 1916, 1923, 1925, 1932, 1933, 1934, 1938, 1948, 1957, 1962, 1989, 2000 & 2002.

Sunshine

The average sunshine total during January hitherto this century is 69.5 hours, almost double that of a hundred years ago (183%).

So, January 2020 has been something of a disappointment by comparison, with just 55.1 hours of sunshine, that is 92% of normal.

Only three January months have recorded less sunshine than 2020 in Coventry since 1998, all of which have been in the past 4 years (2016, 2017 and 2019).