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National Forecast

21 September 2021 08:41

Today - Tuesday 21st September

Mainly dry and fresh this morning with bright spells in many areas as any mist clears. Cloud will build over the western half of the country through the day bringing patchy light rain and drizzle. It will stay bright with sunny spells in the east and southeast. Highest temperatures of 17 to 20 degrees in moderate southwest winds.

Tonight - Tuesday 21st September

Tonight will start mostly dry apart from isolated patches of drizzle. Patchy outbreaks of light rain and drizzle will develop in the northwest towards morning. Lowest temperatures of 10 to 14 degrees in moderate to fresh southwest winds.

Tomorrow - Wednesday 22nd September

Tomorrow morning will be dry for most with sunny spells, but patches of light rain and drizzle will continue in the northwest. More persistent outbreaks of rain and drizzle will push into Connacht and west Ulster through the day. Staying drier elsewhere with sunny spells. Highest temperatures of 16 to 20 degrees in moderate to fresh southwest to west winds.

Outlook

Wednesday Night: Rain and drizzle clearing southeastwards overnight. Clearer conditions moving in from the northwest. Further rain and drizzle will skirt northern coasts by dawn. Lowest temperatures of 9 to 12 degrees, in moderate and mainly westerly winds.

Thursday: A fresher day with temperatures ranging from 15 to 19 degrees north to south. Patchy rain will affect northern counties. Cloudy for much of the country although some sunny spells will develop in southern counties. Light to moderate westerly breezes.

Thursday Night: Further patchy rain and drizzle along northern and western coasts. Dry elsewhere with clear spells and mist and fog patches. Light southwesterly breezes and lows of 9 to 11 degrees.

Friday: Dry in many places on Friday and generally cloudy. Rain and drizzle will affect Atlantic coasts. Some bright or sunny spells will develop in the south and southeast later in the day. Temperatures reaching up to 20 or 21 degrees in the south and southeast, more typically 15 to 19 degrees elsewhere, in light westerly breezes.

Friday Night: Mainly dry overnight with mist and fog patches forming in near calm conditions. Lowest temperatures of 10 to 13 degrees.

Weekend: Current indications suggest unsettled conditions over the weekend with low pressure dominating from the Atlantic.