Today
Frost will gradually clear this morning and patchy rain will develop in the west and southwest.
There will also be a few showers across north Ulster but it will be generally dry elsewhere during the day with occasional bright or sunny spells.
Maximum temperatures this afternoon of 3 to 6 degrees generally but a few degrees milder along Atlantic coasts.
Winds will be mostly moderate, westerly in direction.
Tonight
Patchy rain and drizzle will extend gradually northeastwards overnight but it will make slow progress.
It will be less cold than in recent nights with minimum temperatures of 2 to 5 degrees in Ulster and Leinster but a milder 6 to 9 degrees for Connacht and Munster.
There will be a freshening northwest breeze in the south and west but winds light and variable elsewhere.