Warning: The temperature could fall as low as -6C tonight
Temperatures are set to plummet again this evening with some areas falling as low as -6.
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They warn that the frost will become severe in many places, with some icy roads wit the lowest temperatures as low as -2 to - 6 C on Friday night.
It is expected to be coldest over Ulster and north Connacht, values will be a degree or two above freezing along the east and parts of the south coast.
