A developing low sinking southwards across the UK, an intense high in the Greenland/Iceland region allowed a very cold airmass to flood the UK. This brought snowfalls but also very severe frosts.
Minima recorded
17th February
-18.0C Loughborough
-11.4C Church Stretton
-11.1C Boston
-8.5C Camden Square
-6.7C Weymouth
18th February
-13.3C Hitchin
-8.9C Manchester
-5.9C Torquay
19th February
-21.2C Malton
-18.9C Braemar
-18.3C Hurworth Grange
-17.8C Stamford
-15.3C Loughborough
-14.4C Keswick
-14.3C Driffield
-13.9C York
-13.9C Bury St Edmunds
-12.8C Skipton
MANCHESTER SUMMER INDEX for 2021: 238
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