Severe storms are on the way, bringing everything from gale force winds to snow, ice and rain.
The Met Office has issued a number of severe weather warnings, alerting people to a risk of flooding and travel disruption.
The next few days will see large swings in temperatures as a series of deep Atlantic depressions track past the north of the UK.
The Met Office said today would be windy with showers - some heavy - with a band of rain sweeping east across the country.
A yellow warning of rain for Fermanagh, Londonderry and Tyrone has been put in place from 2pm today until 10am tomorrow, with up to 40mm expected.
Yesterday, Regional Development Minister Michelle McIlveen said more than £1m would be invested in raising roads and in drainage works. Around £625,000 will be spent in Fermanagh, although other areas will benefit.
"A range of improvements have been identified for Armagh, Dungannon, Downpatrick, Newry and Banbridge," said the minister.