Castlewellan (County Down) weather

Headline:

Dull start. Brighten up. Warm sunny spells later.

Today:

A cloudy start with some light rain or drizzle possible along will hill fog. Becoming dry and brighter through the morning with good sunny spells developing widely in the afternoon, although low cloud could persist around Irish Sea coasts. Maximum temperature 23 °C.

Tonight:

Staying dry with sunny or clear spells this evening. Low cloud and mist forming in places overnight with the odd fog patch. Light winds. Minimum temperature 12 °C.

Thursday:

Any low cloud and mist soon clearing to leave a bright day with sunny spells and becoming very warm in places. Mist and fog possible around the Irish Sea coast. Maximum temperature 25 °C.

Outlook for Friday to Sunday:

Mainly dry and becoming very warm or hot with plenty of sunshine. The coast fresher at times with sea breezes developing.

The heatwave from the weekend will be gradually eroded from the west early next week as a cold front arrives from the Atlantic. This will bring the chance of some heavy rain or showers, perhaps thundery, especially in northern and western areas. Towards and beyond midweek, a rather changeable pattern is anticipated with some rain or showers possible at times, which could be heavy and thundery, and particularly focussed in western and northwestern areas. Longer drier spells are most likely towards the south and east, although even here some showers may be possible at times. Temperatures are likely to remain above average, especially in the south and east where further spells of very warm or hot weather remain possible.

A continuation of the broad themes from earlier in the month at first, with high pressure probably dominating the south and lower pressure more favoured to affect the north and northwest. Temperatures are likely to end up above average overall with a continued, and perhaps higher than normal, chance of occasional hot spells or heatwaves, especially further to the southeast. However, around the turn of the month, there is a signal for perhaps more widely unsettled weather to develop, though the details of this remain rather uncertain.