বুধবার ছিল今年迄今最热的一天，但预报员表示气温已经达到了“一段时间内的最高值”。

在伦敦西部的诺特霍特，气温达到20.2摄氏度，在威尔士的波特马多格，气温达到20.9摄氏度，超过了3月5日诺特霍特记录的19.2摄氏度。

虽然气象局预测本周“许多地区将迎来温暖宜人的春季天气”，并预计将持续干燥和晴朗，但气温不会达到与周三相同的水平。

气象局发言人格雷姆·麦杰表示，较高的气温是由于来自欧洲南部地区的温暖空气被抬升造成的。

他补充说：“我们经常在这一时节出现这种情况，我们有时会开玩笑说，今年最热的一天警报每天都会响起。

“我认为今天将是一段时间内的最高值，我们预计在接下来的一个星期内不会再有任何新的记录。”

他补充说：“今天达到的这些值可能会在一段时间内保持最高水平。”

尽管如此，到周四，气温预计将保持在平均水平以上，在英格兰和威尔士的15摄氏度到17摄氏度之间，而苏格兰北部和英格兰北部的一些地区预计将出现多云和轻微降雨。

在周五的寒冷开始之后，英格兰和威尔士预计将再次出现类似的气温，在15到17摄氏度之间，而苏格兰北部的一些地区预计将出现降雨。

The weather is expected to remain dry and around 14C to 17C into Saturday, before some parts of northern England, Scotland and Northern Ireland experience patches of rain on Sunday.

This comes after strong winds caused travel disruption across much of the country over the previous weekend, with gusts of up to 70mph.

Below are some maps showing which areas are expected to enjoy the best of the sunny weather.

Where did temperatures reach 20C this week?

As shown in the Met Office map below, temperatures were particularly high in West Wales, reaching over 20C on Wednesday afternoon.

Temperatures are expected to be especially hot in west Wales.

(Met Office)

Warmer conditions are also expected in the North of England on Wednesday afternoon.

(Met Office)

A number of surrounding areas in England and Wales got close to 20C, with temperatures of over 19C recorded.

Taking a look at Thursday, temperatures are expected to drop by a couple of degrees, hanging around 15–6C for much of the country by 3pm.

Cooler conditions are expected in Scotland, with temperatures as low as 7C on the north-eastern coast and as high as 15C further south.

Temperatures are expected to dip slightly on Thursday, while still remaining pleasant for many.

(Met Office)

Conditions are expected to be cooler in Northern Ireland and in Scotland on Thursday.

(Met Office)

The sunny forecast has been driven by warm southerly winds and high pressure, as well as a phenomenon known as the Foehn effect, forecasters said.

The Foehn effect is caused by a passage of east to south-easterly winds which move over areas of higher ground.

Here, Yahoo News UK breaks down what the weather will be like for each region of the UK, according to the Met Office.

London and the South East

Mostly dry with some sunny spells. Generally light winds, but occasionally breezy on coasts. Mild or warm by day, but risk of overnight fog and frost.

Visitors enjoy the warm and sunny weather at the Royal Botanic Gardens in Kew, London.

(Maja Smiejkowska – PA Images via Getty Images)

South West

Another warm and sunny day is expected on Thursday. Friday and Saturday should remain dry with sunny spells, although a little cooler. Chilly nights where skies remain clear. Light winds.

Midlands

Another warm and sunny day is expected on Thursday. Friday and Saturday should remain dry with sunny spells, although a little cooler. Chilly nights where skies remain clear. Light winds.

North East

The sun rises over the lighthouse at South Shields.

(Owen Humphreys – PA Images via Getty Images)

Perhaps rather cloudy Thursday with risk of patchy light rain, but otherwise dry with some sunny spells and light winds. Mild by day, but risk of overnight fog and frost.

North West

Largely dry each day, with sunny spells. However, the cloud may be thick enough for a few spots of light rain over the hills at times. Starting to feel cooler.

Daffodils in bloom in Sefton Park, Liverpool.

(Peter Byrne – PA Images via Getty Images)

Scotland

A dry and settled few days with some sunshine. Mild, but chilly overnight with some frost. Light winds.

Northern Ireland

A dry and settled few days with plenty of sunshine. Mild, but cold overnight with some frost.

Wales

Another warm and sunny day is expected on Thursday. Friday and Saturday should remain dry with sunny spells, although a little cooler. Chilly nights where skies remain clear. Light winds.