http://www.metoffice...k/observations/ shows some interesting contrasts at 1300 hours:
SHETLAND/ORKNEY: Kirkwall (Orkney) 15.3 deg. C., Baltasound and Lerwick, both Shetland, 8.1 deg. C. and 6.4 deg. C. respectively. these last 2 are the only Scottish stations below 12 deg. C.; even the high altitude sites of Glen Ogle and Eskdalemuir are at 13.5 deg. C. and 18.3 deg. C. respectively.
WALES: The normally mild Mumbless Head is the lowest at 12.4 deg. C., with the high level Capel Curig at 18.6 deg. C. second only to Valley at 18.8 deg. C.
ENGLAND: Many sites on the east are well below 10 deg. C., but temperatures rise considerably as you move inland; examples are in Yorkshire/Humberside, Bridlington 6.2 deg. C., Fylingdales 15.0 deg. C.; East Midlands, Wainfleet 6.5 deg. C., Donna Nook 6.6 deg. C., Holbeach 7.6 deg. C., Coningsby 9.1 deg. C., Nottingham Watnall 13.9 deg. C.. East of England: Bedford 5.0 deg. C., Shoeburyness 6.2 deg. C., all of 5 other stations below 10 deg. C. except Marham 11.7 deg. C. S.W. England: St. Mary;s (Scilly)12.0 deg. C., Isle of Portland 12.1 deg. C., Chivenor 17.5 deg. C. Hurn Airport 17.2 deg. C. London & S.E. England: Manston 5.7 deg. C., Langdon Bay 7.6 deg. C., Gravesend 8.4 deg. C., Kenley 9.8 deg. C., all other sites between 11.9 deg. C. (St. Catherine's Point) and 15.2 deg. C. (Benson).
By 1400 Magilligan, Northern Ireland, was up to 19.3 deg. C. exceeding yesterday's maximum of 19.1 deg. C. at Derrylin Cornahoule, Co. Fermanagh, but still 2.4 deg. C. off the Northern Ireland record of 21.7 deg. C. in March 1965; Aboyne was up to 21.4 deg. C., which I think is withon 0.8 deg. C. of the Scottish March record. Only Aberdeen Dyce (20.9 deg. C.) and Altnaharra (20.0 deg. C.) are 20 deg. C. or over, although an hour earlier Keswick in Cumbria, which has dropped to 19.5 deg. C., also exceeded 20 deg. C. Trawscoed in Wales is now the warmest at 19.5 deg. C.
There were mainly small rises mainly of less than a degree C. between 1300 and 1400 e.g. in the Northern Isles, Lerwick is still 6.4 deg. C., Baltasound has risen slightly to 9.4 deg. C. and Kirkwall dropped slightly to 15.1 deg. C.; in Yorkshire/Humberside, Bridlington is 6.5 deg. C. and Fylingdales 15.9 deg. C.; Donna Nook is now the lowest in East Midlands at 7.0 deg. C. while Watnall is still the warmest at 14.6 deg. C. In Eastern England, Bedford has risen to 7.5 deg. C. and the coldest are Shoeburyness and Weybourne at 6.4 deg. C., while Marham is 13.0 deg. C.; in SW England, St. Marys has dropped to 11.9 deg. C. and Chivenor is now at 18.4 deg. C. while in London & S.E. England, Manston is the lowest (also the lowest in the British Isles at the moment, although it is more noted for high maxima at times) at 5.9 deg. C., Langdon Bay (8.4 deg. C.) and Gravesend (9.9 deg. C.) also below 10 deg. C., with Brize Norton and Odiham at 15.8 deg. C. just above Benson at 15.7 deg. C.
http://www.met.ie/latest/reports.asp is showing 20 deg. C. at 1500 hours at Casement Airport, Co. Dublin, and Finner Camp in Co. Donegal.
It reached 22.2 deg. C. yesterday (24th) at Porthmadoc in Wales, a joint date record for 24th March with 1918 in Nottinghamshire, I believe (see
http://www.ukweather...-exeter-ap-06c/). It looks possible that this will be exceeded today, most likely in Scotland; the date record for 25th is 21.7 deg. C. (in 1953), so the temperature OF 21.4 deg. C. at Aboyne at 1400 hours has only to increase by another 0.3 deg. C. to equal this (see
http://www.ukweather...-for-each-date/). The fact that the clocks went forward by an hour early this morning makes it mathematiclly slightly more likely that this will happen than if 25th March this year had been a Saturday. It also seems possible that the Scottish March record of 22.2 deg. C. (does anyone know what year this was?) might be equalled or exceeded.