Here is a sequence of maps showing the expected maximum temperatures between Friday and Tuesday.
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5 days of Derry/Inishowen temperature maps for mini heatwave
Derry and Donegal look set to enjoy temperatures in the high 20s and possibly the low 30s at the start of next week as warm air pushes north from Europe.
By Kevin Mullan
Published 15th Jul 2022, 16:16 BST