Heavy rainfall led to roads flooding and several cars becoming stranded.
Areas badly hit included Cossington, Sileby and Rothley, where floodwaters caused problems for cars last night.
By 7.30pm yesterday, the fire service said it had dealt with eight cars that had become stranded in flooded areas.
A fire spokesman said: "The rainfall in Leicestershire is causing several roads to be flooded and we request that people avoid driving through floodwater.
"We've had several calls from people who have become stuck in floods and that puts both them and the fire service crews who need to aid them in danger.
"These are largely avoidable incidents."
An eyewitness in Sileby said: "It's all the usual roads that are flooding and I don't think any homes here are at risk.
"But there are a lot of fire engines going out to the flooded roads to rescue people.
"I've seen cars stuck in water that's about two foot deep."
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