PHOTO: Siobhán McNamara
The cold snap will continue with north west winds in the early part of Friday veering northerly by lunchtime.
Temperatures are expected to range from 8°C to 10°C. It will be largely overcast but there will be some sunny spells in the afternoon.
Overnight temperatures will be around 6°C to 8°C.
Winds will drop somewhat to a light breeze by Saturday, however they will veer easterly bringing further drops in temperatures.
Daytime temperatures are not expected to rise above 5°C to 7°C in Donegal, and could drop as low as -1°C on Saturday night and into the early hours of Sunday.
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