Llanberis Youth Hostel (Gwynedd) weather

Headline:

Staying unsettled with rain at times, heaviest in the south.

This Evening and Tonight:

A wet and windy evening with periods of heavy rain. Turning drier through the early hours with patchy fog and frost possible. Further rain arriving in the south later. Gales possible in Gwynedd and Anglesey this evening, winds easing overnight. Minimum temperature 2 °C.

Sunday:

A wet day for some with the most persistent rain probably in the south, however showers will probably affect northern areas at times through the afternoon too. Light easterly winds. Maximum temperature 7 °C.

Outlook for Monday to Wednesday:

A frosty start for some on Monday. Turning windier with rain pushing eastwards later. Very wet and windy on Tuesday with gales and flooding likely in places. Brighter on Wednesday.

Weather systems moving in from the Atlantic will continue to attempt to push in from the west, but tending to stall in the vicinity of the UK as they encounter high pressure to the north and northeast. As a result, further spells of rain or showers are expected at times. These may be heavy and persistent, especially in the south and west. Whilst mild conditions are expected to encroach into the south and southwest at times, cold air is likely to be positioned to the northeast, bringing wintry showers at times. Where fronts from the south west do reach the cold air towards the north east, there is the risk of some snow, most likely across hills, but perhaps extending to lower areas at times.

A similar theme is expected to continue as Atlantic frontal systems attempt to push eastwards at times. As the jet stream is slightly further south than normal, the wettest conditions are more likely in central and southern areas. North and northwestern parts of the UK are most likely to be drier than normal. Whilst mild incursions of wet and windy weather are favoured at times in the south and west, colder conditions in the north and northeast will bring an increased risk of wintry hazards, especially where any precipitation from the south west interacts with the cold air.