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National Forecast

Issued at: 19 July 2018 22:11

TONIGHT - Thursday 19th July

Dry in the east and south at first, but cloudy, misty weather, with rain, already over parts of Ulster and Connacht will become widespread overnight, with some hill and coastal fog also. The rain will be persistent and some times heavy in northern areas, but lighter and more intermittent in the south. A humid night, with lowest temperatures 11 to 14 C., in moderate southwest breezes.

TOMORROW - Friday 20th July

Tomorrow Friday will be mostly cloudy. The day will begin misty, with outbreaks of rain, much of it light. But drier weather developing over Ulster later in the morning will extend slowly southwards during the afternoon and early evening. The best of any sunshine will be over Ulster later in the afternoon. Top temperatures 17 to 19 C., generally, but locally up to 21 C., in parts of east Munster and south Leinster. Moderate southwest winds will become northwesterly after lunch.

National Outlook

General: A mostly dry day on Saturday but becoming very warm and humid on Sunday and Monday followed by fresher conditions with scattered showers on Tuesday and Wednesday.

Friday night will become mostly dry with some clear spells developing. It will be fresher in the light to moderate northwesterly breeze and lowest temperatures will be around 10 to 14 degrees.

Saturday will be mostly dry with good sunny spells and just the odd shower but cloud will increase again from the west later with patchy light rain or drizzle by evening in the northwest. Top temperatures will be again around 16 to 22 degrees, coolest in the northwest in a light to moderate west to northwesterly breeze.

Saturday night will become cloudier again with just patchy light rain or drizzle. It will become mild and humid with lowest temperatures around the mid teens.

Sunday will be very warm, humid and dull or cloudy with a few bright or sunny spells breaking through, most likely in the south and southeast. Overall it will be a mostly dry day with just some patchy light rain or drizzle at times and patches of mist and hill fog. Top temperatures will be in the low to mid twenties in a light to moderate westerly breeze.

Sunday night will continue to be very mild and humid with outbreaks of rain affecting mainly western and northern coastal counties and just patchy drizzle elsewhere.

Monday will be very warm and humid with outbreaks of rain mainly in the west and north. Winds will be light to moderate southwesterly.

And indications suggest that Tuesday and Wednesday may become fresher with scattered showers and top temperatures in the high teens to low twenties.

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