Early frost and any fog patches will clear this morning to leave a dry day with sunny spells.
After a cold start maximum afternoon temperatures will range 11 to 14 degrees in mostly light breezes.
A dry start to the night with clear spells but cloud will thicken overnight and patchy rain and drizzle will extend gradually northeastwards across the country by the end of the night.
Southeasterly winds will freshen and gales will develop off the southwest and west coast by dawn on Thursday.
Minimum temperatures of 4 to 8 degrees.
Weather advisory for Ireland
There is a high probability that Storm Lorenzo will track close to or over Ireland later on Thursday and early Friday, giving high seas, severe winds and heavy rain.
Warnings will be issued Wednesday morning.
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— Met Éireann (@MetEireann) October 1, 2019