There is currently a status yellow, fog warning in place for the whole of Leinster in a drastic weather turn.
The dangerous weather event will see a "risk of dense fog" over the capital and the rest of the province for five hours.
People are being warned to use their fog lights in the affected areas with the warning in place until 10am this morning.
It will be a cold and frosty start with patches of mist and fog on Thursday which will be "stubborn to clear in some areas".
Temperatures of 9C will fall to -2C overnight turning cold and frosty ahead of the weekend.
Here's how the next few days and into the weekend are looking in Ireland:
Tomorrow: "A cold and frosty start on Friday with areas of mist and fog. The afternoon will bring mainly dry conditions with bright spells but also a few isolated showers. Highest temperatures will generally range 5 to 8 degrees but just 3 or 4 degrees where fog persists throughout the day. Winds mostly light or moderate south to southeast in direction."
Friday night: "Cold overnight and turning frosty for a time with patches of mist and fog also. Becoming a little less cold later with scattered patches of rain and drizzle spreading from the south. Minimum temperatures of -1 to +3 degrees, occurring early in the night with light or moderate east or southeast breezes."
Saturday : "A mix of cloud and bright spells with a few patches of rain or drizzle, mainly in eastern and southern coastal counties. Highest temperatures ranging from 8 to 12 degrees in moderate southeast winds. Fairly cloudy overnight with scattered patches of mist and drizzle. Minimum temperatures of 5 to 8 degrees in light southeast or variable breezes.
Sunday: " Many areas will be dry on Sunday with a mix of cloud and bright spells. However, there will be some patches of rain and drizzle about, especially across north Connacht and Ulster. Highest temperatures of 9 to 12 degrees in mostly light, variable winds. It looks set to be predominantly dry overnight but with a few patches of rain, drizzle and mist. Lowest temperatures of 5 to 8 degrees with just light breezes."
Early next week : "Current indications are for high pressure to remain positioned close to Ireland for Monday and Tuesday bringing mostly dry weather but with some scattered patches of rain and drizzle. Daytime maxima generally ranging 7 to 10 degrees with night-time temperatures of 3 to 6 degrees. Winds will remain mostly light, varying in direction."
