West Midlands Ambulance Service are warning people to avoid swimming in lakes, rivers and other open water.
It comes after 17-year-old Russell O'Neill died at a quarry near the Malvern Hills in Worcestershire at the weekend.
The Ambulance Service is urging people not to risk their lives.
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Sunny spells on Friday after a frosty start, with only isolated wintry showers, mainly over the hills. Cold with a brisk northerly wind.
Brisk northwesterly winds will bring scattered showers with some bright or sunny spells developing in between. A widespread frost overnight.
Arthur 'Bob' Gumbley was beaten and robbed in his own home before he died in hospital.