Mynydd Illtyd weather

Headline:

Dry at first. Rain arriving from the southwest overnight.

This Evening and Tonight:

Any daytime showers will fade to leave a largely dry night, with some clear spells, especially in the north and east. Meanwhile, thicker cloud and outbreaks of rain, heavy at times, will arrive into the southwest by dawn. Freshening winds. Minimum temperature 13 °C.

Friday:

Rain, heavy at times, spreading northeast across all parts during the morning. Brighter conditions will follow during the afternoon, with some heavy and thundery showers developing, especially in the east. Maximum temperature 22 °C.

Outlook for Saturday to Monday:

Sunshine and scattered, locally thundery showers on Saturday but dry with sunny spells on Sunday. Fine and sunny on Monday, but breezy in the west. Turning increasingly warm and humid.

Updated: 16:00 (UTC+1) on Thu 18 Jul 2019

This period will tend to see a northwest to southeast split in the weather across the UK, with northwestern parts experiencing spells of rain, which could be heavy at times, as well as some periods of strong wind bringing a risk of coastal gales. By contrast, southern and southeastern parts of the UK should see much drier and warmer weather, which could be hot and rather humid at times, especially early to mid next week. Potential for thunderstorms to develop as any hot, settled weather breaks down from the west. Beyond that, the signals become more mixed although overall the northwest to southeast split will most probably continue. The south and southeast is likely to see some rain but it will be less frequent than in the northwest.

Updated: 16:00 (UTC+1) on Thu 18 Jul 2019

As we move into early August, the final month of the meteorological summer, confidence is low in the forecast with no one single weather pattern looking to dominate. As is often the case in summer, this could well mean plenty of fine, dry weather, interspersed with occasional rain or thundery outbreaks, leading to marked local variations in rainfall. Temperatures are likely to be above average, perhaps more especially in the south and west.

Updated: 16:00 (UTC+1) on Thu 18 Jul 2019