London Marathon competitors could see ideal weather conditions in the wake of blustery Storm Hannah - and temperatures are set to rise again this week.
Sunday got off to a chilly start after Hannah battered the UK with 82mph winds and heavy rain, and it will be cool and grey before the sun breaks through.
There is a chance of light rain and winds will be breezy, but the Met Office says favourable weather is expected for the more than 40,000 athletes taking part in the UK's biggest marathon.
Temperatures will rise through the week - possibly hitting 20C in the south on Wednesday - and will remain in the low 20s for the early May bank holiday weekend.
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Sunday got off to a cloudy start for most with patchy rain in places and temperatures in the single digits.
Sunny spells with develop through the afternoon with a few showers, which will be heavy in the southeast, the Met Office said.
It will be warmer for most with lighter winds.
During the London Marathon, temperatures are expected to peak at around 16C in the afternoon, while rain will be limited to a passing light shower or two and winds will be breezy at most.
Air pollution, the pollen count and ultraviolet (UV) levels are forecast to be low to moderate.
Met Office meteorologist Alex Burhill said there will be a chilly start for everyone gathering at the starting line in Greenwich, although temperatures will climb into the teens.
He said: "It will be a little bit cloudy at first, but things should brighten up as we go through the morning and into the afternoon with some sunny spells developing.
"There's a chance of the odd shower, but it will be just one or two light showers nothing more than that.
"It's going to be less windy than yesterday; it will be a bit breezy, but we are only talking gusts of 15-20mph so nothing especially strong.
"Temperatures will be around 8C to 9C when people are starting, but by early afternoon we are looking at highs of 15C or 16C.
"Last year it was very warm and sunny which isn't ideal, while yesterday it was a lot windier with some heavy rain around which wasn't great, so in comparison to those days it's much better for running."
UV levels are likely to peak in London at level three on the index, which is classed as moderate.
Pollen levels will be moderate, while the air quality index is due to be level three, which means air pollution is low. Level four is moderate.
The 2018 London Marathon was hottest on record, with temperatures reaching 23.2C in central London.
For the rest of the week, Monday will be dry with warm sunny spells in most places, although rain is likely to be persistent across Northern Ireland.
Tuesday will be mostly dry and bright, and rain will move eastwards through Wednesday, when temperatures could hit 20C in places.
Thursday will be dry and bright in the south but rainy in the north.
Dry weather is expected through the bank holiday weekend, with temperatures peaking in the low 20s.
Met Office five-day weather forecast
Sunday
A cloudy start for most with patchy rain in places.
Sunny spells developing through the afternoon with a few showers, locally heavy in the southeast.
Warmer for most with lighter winds.
Cloud and patchy rain edging across the far west.
Sunday night
Cloudy with hill fog and patchy rain and drizzle in the west.
Elsewhere, dry with clear periods.
Chilly under clear skies with patchy frost and fog in the east.
Monday
Cloud and rain in the west clearing east, but persisting across Northern Ireland.
Dry with warm sunny spells elsewhere with some early low cloud along the east coast clearing.
Tuesday to Thursday
Mostly dry and bright on Tuesday but rain in the west will move east through Wednesday.
Dry and bright in the south Thursday, but spells of rain in the north.
Early May Bank Holiday
In its extended forecast for Thursday 2 May to Saturday 11 May, the Met Office says: "As we go into the first Bank Holiday weekend of May a pattern of generally dry weather is likely to develop, with some sunshine across most parts, although some western and eventually northern areas may see some more unsettled and windier conditions later.
"Although it could turn rather cold for a time in the north, day time temperatures are more likely to become warmer again.
"Nights may be fairly cold, with some late frost in susceptible parts of the north.
"How long the settled weather continues is uncertain and there remains a chance of spells of wet, windy and cooler"
