Marek Kučera 
After information about the coldest April 2021 in the UK since 1922 (for entire territory of the country): https://mkweather.com/confirmed-coldest-april-in-the-uk-since-1922-late-frosts/) there is the next interesting statistic from central England.
CET (Central England Temperature Record) is one of the oldest dataset of temperature records on the Earth, with the first measurements since 1659 and daily data since 1772.
Modern measurements within CET are performed since 1880.
Under an article Central England Temperature Record 1880-2021 showing mean temp for April. Just broken the dataset cold record for April´s minimum temperature!
While average monthly temperature reached in the station only +6,4°C, with monthly temperature anomaly -1,5°C /https://www.metoffice.gov.uk/hadobs/hadcet/cet_info_mean.html/, what was colder than average temperature in March 2021, average monthly minimum temperature reached only around +1,0°C, what is the lowest temperature since modern records began, 1880!
All year 2021 is in England / the UK very cold, with only little temperature anomaly from 1961-1990 normal, according to CET measurements / Met Office.
May 2021 has started with extremely cold weather too, with comparable average temperatures such in April 2021. In Shap, northern England, on 1. May 2021, only -5,8°C was measured, what is only 3,6°C warmer value than all-time May record for the UK from 1941.
Expected European heatwave /https://mkweather.com/33c-in-central-europe-heatwave-between-8-12-may-will-be-strong// around 10. May very probably won´t hit British Islands.
Cold front and subsequent Greenland´s high on the contrary will bring extremely cold May weather, with the next frosts, ground frosts or even snowing into parts of the UK during next 2 weeks.
Extremely cold weather in early May 2021 after extreme April 2021 /https://mkweather.com/england-april-is-colder-as-march-the-coldest-since-1922/; https://mkweather.com/the-uk-with-frostiest-april-in-history-some-stations-report-24-frost-days/; https://mkweather.com/germany-suffers-the-coldest-april-since-1917-extreme/; https://mkweather.com/france-the-coldest-mid-spring-in-all-time-history/; https://mkweather.com/coldest-april-in-the-netherlands-in-30-50-years-in-belgium-in-35-years// is still continuing and during the first May 2021 days, all-time monthly records from France, the Spain and Germany were reported /https://mkweather.com/france-extreme-frosts-are-back-monthly-may-temperature-records-overcame/; https://mkweather.com/frosts-ground-frosts-and-monthly-records-in-the-spain-northwestern-spain-30c-andalusia-46c/; https://mkweather.com/germany-monthly-records-for-may//.
Reasons of very cold conditions we should find in ongoing La nina /https://mkweather.com/global-temperatures-dramatically-went-down-the-sharpest-jump-since-1990s-la-nina//, but to in strong volcanic activity and minimum of current solar cycle, according to many professionals and watchers.
