Castlewellan (County Down) weather

Headline:

Cloudy start on Thursday, some warm sunshine by afternoon.

Today:

It will be a dry day. Rather cloudy at first but the cloud breaking up during the morning to leave a bright afternoon with sunny spells. Becoming very warm Maximum temperature 25 °C.

Tonight:

A fine sunny evening then dry tonight with long clear spells. The odd fog patch forming in the early hours and perhaps some coastal; fog or low cloud in Down. Minimum temperature 12 °C.

Friday:

Mainly dry and becoming very warm or hot with plenty of sunshine. Some light sea breezes keeping it a little cooler and the chance of coastal fog patches in Down. Maximum temperature 27 °C.

Outlook for Saturday to Monday:

The weekend will be dry with long sunny periods, and it will be hot. Chance of thundery rain on Monday.

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.