Picture: RTE weather forecast
Met Éireann has issued yellow rain and snow weather warnings for Ireland this St Patrick's weekend.
A status yellow rainfall warning for Connacht, Longford, Offaly, Westmeath, Cavan, Monaghan, Clare, Cork, Kerry, Limerick and Tipperary is in place from 9pm Friday night until 12 noon on Saturday. Very heavy rain developing overnight and into Saturday with spot flooding, 25 to 35mm expected. The rain may turn to snow in parts for a time.
In Donegal, heavy rain will turn to snow on Friday night and early Saturday morning. On high ground snow accumulations are likely to be greater. A yellow snow-ice warning is in place for Donegal from Saturday at 12 midnight until 12 noon.
Looking at St Patrick's weekend in general, widespread rain is forecast for Friday night with heavy falls leading to spot flooding, especially across the southwest and west of the country.
The rain will turn to snow for a time across Ulster and across parts of the northwest with some accumulations (mainly across Donegal).
Strong southwesterly winds will pick up again overnight, but it will be calmer in the north. A large contrast in temperatures with lows of 0 to 2 degrees Celsius in northern counties, versus 9 or 10 degrees Celsius in the south.
Snow over Ulster will begin to fall back into rain on Saturday morning. Very wet and blustery across much of the country with further spells of heavy rain and strong and gusty west to southwest winds.
The rain will ease in the afternoon with a clearance to sunshine and scattered blustery showers - a risk of hail and thunder.
Saturday night will be cold and breezy with clear spells and scattered showers, some wintry with hail and thunder possible near Atlantic coasts. Fresh to strong west or northwest breezes. Minimum temperatures -1 to +3 degrees.
Sunday: St. Patrick's Day looks set to be a cold and blustery day with sunny spells and passing showers, some with hail and thunder. Highest temperatures of 7 to 9 degrees in fresh and gusty west to northwest winds. Showers will retreat to Atlantic coastal areas on Sunday night with good clear spells developing elsewhere. Lowest temperatures of 1 to 4 degrees.
Monday: It is expected to be a cloudy day on Monday with scattered patches of light rain or drizzle. Highest temperatures of 8 to 11 degrees in moderate westerly winds. Staying mostly cloudy overnight with a few spots of rain or drizzle. Lows of 4 to 7 degrees.
Tuesday: Current indications suggest Tuesday will be a cloudy and breezy day with patchy rain and drizzle moving eastwards across the country. However, there will be good dry periods also. Maximum temperatures of 9 to 12 degrees in moderate to fresh southwest winds. Largely dry overnight with just light breezes and minimum temperatures of 7 to 9 degrees.
Wednesday: The latest guidance indicates Wednesday will be a mostly dry day with just a few showers in the west and north. Maximum temperatures of 11 to 14 degrees.