A status yellow snow and ice warning is in place for the east of the country until 6pm on Tuesday evening.
Met Eireann says there's a very cold week in store, and that temperatures on Wednesday won't get above freezing.
Snow accumulations of 2 to 5 centimetres are forecast for Dublin, Kildare, Louth, Wicklow, Meath and Monaghan.
Dublin City Council says its winter emergency plan is in place.
29C Highs In Wicklow With Temperature Warning From Tomorrow
The hosepipe ban remains in place for another two weeks amid this latest hot spell.
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Motorists travelling between Kilcullen and West Wicklow may be impacted.
Patients Urged Not To Attend GP Practice In Bray Amid Suspension Order
The Medical Council has issue a strong warning regarding Dr Regine Grah, who is suspended from the Medical Register by order of the High Court.
Anti-social Behaviour In Bray Raised With Justice Minister
Wicklow TD Edward Timmins contacted Minister Jim O'Callaghan as residents in the Boghall Road area report ongoing problems.
Sunny intervals
High: 25°C | Low: 16°C
Sunny intervals
High: 22°C | Low: 15°C
Sunny intervals
High: 25°C | Low: 14°C
Sunny intervals
High: 28°C | Low: 16°C
Sunny intervals
High: 27°C | Low: 15°C
