Tonight is set to be one of the coldest nights of the year with temperatures expected to drop to -4 degrees overnight.
Met Eireann has warned that Donegal, Leitrim and Sligo are expected to experience snowfalls overnight.
Many parts of the county woke to a light blanket of snow which has gradually turned to ice and slush but driving conditions are still dangerous.
The coldest night recorded so far in 2014 was in Mullingar where temperatures fell to -4.3 degrees on February 10th.
But parts of Donegal could dip below that tonight.
Donegal County Council has its fleet of gritters out and about.
Drivers are warned to take extra care after overnight snow and frost created icy stretches on roads.
Pedestrians are also advised to take extra precautions this morning on icy footpaths and untreated road surfaces, while drivers should remember to de-ice their car before setting off to work.
The icy conditions have prompted Met Éireann to issue a status yellow weather alert, the lowest of the three categories of warning.
Afternoon temperatures are expected to range between 3 to 6 degrees with some bright spells.
The forecaster has warned northern counties of prolonged wintery showers throughout Friday afternoon.
Met Éireann meteorologist Siobhán Ryan says the “raw” weather conditions are set to continue through the weekend.
“Tonight will be one of the coldest nights so far this year. There’s a risk of wintry showers in the northwest with snow in Donegal, Leitrim and Sligo later tonight and first thing tomorrow.”
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