Today
Rain over Ulster will clear this morning.
Frost in parts of Munster will gradually clear.
Any overnight fog may be slow to clear though.
Otherwise it will be a largely dry day with some sunshine and just isolated showers.
Highest temperatures of 5 to 8 degrees, but colder where fog lingers. Winds will be mainly light.
Tonight
Tonight will start dry in most areas with clear spells.
Showers in the southwest will spread across Munster and south Leinster.
They will clear again later and temperatures will drop close to freezing, giving some frost and the risk of ice on roads.
Some fog is likely to form as well.
Lowest temperatures of 0 to 3 degrees in little or no wind.