Irish Rail says it hopes to have DARTs running again by 8am Saturday, with other services following from 9am.
Services will resume in the morning, subject to alterations and some delays.
Luas will not be running, and the company will revise the situation after 9am.
Dublin Bus says it "expects" to operate services on Saturday, admitting that it is dependent on road and weather conditions.
The company says it is "continuously monitoring the situation closely and taking advice from Met Éireann and the National Emergency Co-ordination Committee."
Bus Eireann says it "may" be able to resume "a level" of services tomorrow morning, dependent on local road conditions.
"It is our aim to operate some services on the Expressway inter-city network, and possibly a level of regional city and town services, in less affected areas."
The company has admitted there "will not be any kind of full service schedule tomorrow".