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    Forecast summary

    • Regional
    • UK 5 days
    • UK 6-30 days

    Regional forecast for Northern Ireland

    Cloudy with rain.

    Today:

    Cloudy with rain at times, some of this on the heavy side. Southern counties may become a little drier and brighter later. Feeling rather warm and humid. Brisk southeasterly wind along the east coast. Maximum Temperature 18 °C.

    Tonight:

    Rain will clear away northwards this evening to leave the rest of the night mostly dry but rather cloudy and misty. A warm and humid night to come. Minimum Temperature 15 °C.

    Tuesday:

    Chance of a little brightness in the morning before outbreaks of heavy and thundery rain develop in the afternoon and evening. Warm and humid. Maximum Temperature 19 °C.

    Outlook for Wednesday to Friday:

    Unsettled on Wednesday and Thursday with some heavy showers. Becoming drier and somewhat fresher by Friday.

    Updated at: 0415 on Mon 21 Aug 2017

    UK forecast for the next 5 days

    Rain in the northwest, bright and warm elsewhere.

    Today:

    Starting bright in the east and remaining so in the far northeast, whilst rain pushes into the northwest, this turning heavy and persistent in places. Elsewhere, rather cloudy with drizzle at first, but brighter later and turning warm and humid.

    Tonight:

    Rain, heavy at times, slowly moving north-eastwards across Scotland, but staying dry in the far northeast. Largely cloudy and humid elsewhere with widespread hill and coastal fog.

    Tuesday:

    Rain across Scotland fizzling out, but further heavy and thundery rain spreading into Northern Ireland and western Scotland. Brighter elsewhere with a few showers. Turning very warm in the south.

    Outlook for Wednesday to Friday:

    Changeable and turning fresher with showers or longer spells of rain, these heaviest and most frequent in the north and west. Very warm and dry across the southeast on Wednesday.

    Updated at: 0305 on Mon 21 Aug 2017

    Outlook for the UK over the next 6-30 days

    UK Outlook for Friday 25 Aug 2017 to Sunday 3 Sep 2017:

    Friday and the subsequent bank holiday weekend will stay changeable, with heavy showers or longer spells of rain, particularly in the north and west. However, parts of the south and east may stay mainly dry with some sunny spells. Temperatures will be around normal in most parts, but probably above average in the southeast, bringing a chance of a few thundery showers. It will be windy at times, especially in the north, with a risk of gales here. Into the following week, there remains a lot of uncertainty, although we may continue to see spells of wet and windy weather, particularly in the northwest, with drier spells, mainly in the south. Temperatures will probably be near normal, though perhaps rather warm at times in the south.

    Updated at: 1302 on Sun 20 Aug 2017

    UK Outlook for Monday 4 Sep 2017 to Monday 18 Sep 2017:

    In the first half of September, we are most likely to see changeable weather conditions featuring across the United Kingdom. However, there will be some dry and fine weather at times too. On balance spells of rain and strong winds are likely to dominate in the north and west, with drier and brighter weather more common in the south and east. Temperatures will probably remain close to normal for the time of year in most parts, though they may become warm or very warm at times in the south.

    Updated at: 1302 on Sun 20 Aug 2017

    Location Details

    Castlewellan

    Location: 54.2571, -5.944

    Altitude: 112.0 m above mean sea level

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