The summer sun is on hold again as Norfolk has been issued a weather warning for heavy rain.

The Met Office has announced a yellow weather warning for rain covering the whole county from 3pm today until 9am tomorrow.

The agency has also warned that areas may be at risk of localised flooding.

A Met Office spokesman said: "Outbreaks of rain, heavy at times with a risk of thunder, are expected to develop later on Monday afternoon then move northwards through the evening and overnight.

"15mm to 20 mm rain may fall in less than an hour, with a few places seeing up to 40mm in two hours but perhaps more widely within a longer period overnight."

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People have also been warned that the rain could disrupt bus and train travel.

The rain is a bad omen for weather this summer according to the legend of St Swithin’s Day.

According to traditional folklore, the weather experienced on St Swithin’s Day (July 15) will continue for the next 40 days – meaning parts of the country could be in for a wet rest of the summer if superstition holds true.

The proverb of St Swithin says: “St Swithin’s Day if thou dost rain, for forty days it will remain, St Swithin’s Day if thou be fair, for forty days will rain na mair.”