The UK as a whole entered a cold spell mid-month from the 15th to the 23rd as winds turned northerly, with maximums generally restricted to low single figures Celsius and minimums falling well below zero, Drumnadrochit in Inverness-shire reporting -10.4 °C on the 19th. This period also saw the most significant snowfall of the month in all regions. Loch Glascarnoch in Ross & Cromarty recorded 34cm of lying snow on the 18th and 19th.

By the 23rd, high pressure had established itself over the south of the UK, in effect producing a north/south split with the colder continental air well entrenched over the south but significantly milder Atlantic air crossing the north. Dyce in Aberdeenshire recorded the highest maximum of the month on the 24th with 15.8 °C. From the 25th onwards, following the passage of a cold front, temperatures evened out across the UK, with maximum temperatures around average and most places experiencing slight night-time frosts, before turning milder, windier and wetter again in northern areas from the 29th.