Parts of Ireland will experience freezing temperatures on Monday night.
Met Eireann is predicting frosty conditions on a bitterly cold night, as winter arrives 10 days early.
It will be a mainly dry night with clear skies. Temperatures will drop to as low as -1C, however, it will be warmer in areas covered by cloud.
A forecaster said: "Dry tonight, with mostly clear skies in the south and east, where it will be cold with lows temperatures of -1C to plus 2C, with some grass frost.
"But more cloudy in the west and north and less cold too, with values of plus 2 to 5 C.
"Light southwest winds will increase moderate to fresh in west and northwest coastal counties."
It will be a frosty start to Tuesday, but dry conditions and sunny spells are forecast.
The forecaster added: "Mostly dry on Tuesday. Early frost in the south and east soon clear, with some sunny spells for a time.
"But cloud will thicken from the west and it will become breezy there later as well. Top temperatures of 11 to 13 degrees.
"Moderate to fresh south to southwest winds will increase strong along Atlantic coastal later in the day."
Met Eireann is still unsure about the weather forecast for the October bank holiday weekend.
However, the national forecaster said early indications suggest a "mild weather scenario with above normal temperatures".
