Temperatures are expected to be below the mid-May average for most, especially by midweek
It will also turn quite showery with the potential for some heavy downpours, even with a little snow over the Scottish hills
However, with some strong spring sunshine also in the forecast, and with lighter winds returning later in the week, it will still feel pleasantly warm at times.
Tuesday started on a frosty note across much of England and Wales.
A weak weather front across Scotland and Northern Ireland has kept the frost at bay here bringing instead a little rain. However as the front progresses south to England and Wales, no more than a splash is expected
Scattered showers will follow this weather front, mainly in Scotland, Northern Ireland and later northern England but there will also be a lot of dry and sunny weather between
There will be less bite to the wind on Tuesday, which will be very noticeable for the east coast. Daytime temperatures will return briefly to average, which ranges from about 12-17C north to south
From Wednesday, however, temperatures are set to drop once again
With the air coming from northern Scandinavia and the Arctic circle, temperatures will be around 3-7C below average
Low pressure will become more dominant with some strengthening winds and showers
With the colder air in place those showers could be wintry with snow over the high ground of Scotland, which is not unusual at this time of yearWith the colder air in place those showers could be wintry with snow over the high ground of Scotland, which is not unusual at this time of year
Spring is the transition season from winter to summer and so big swings in temperature and weather is expected
The wind direction we experience in the UK can make a big differ
Any southerly will drag in the increasingly warm air from the Mediterranean, potentially boosting temperatures into the high twenties.
Last week the overnight temperature in Tomintoul, Moray, fell to -6.8C. This was the lowest May temperature since 1997.
Temperatures will start rise back to average later this week but there may also be some rain in the forecast. You can stay up to date with our latest monthly outlook here.