Llwytmor (Gwynedd) weather

Headline:

Sunshine and scattered showers today.

Today:

Early rain in the east quickly clearing, leaving a morning of sunshine and a scattering of showers, mainly in the west. The showers becoming more widespread throughout the afternoon, potentially turning heavy in places. Feeling warm in the sunshine. Maximum temperature 21 °C.

Tonight:

Scattered showers continuing this evening and overnight, with some clearer spells developing in between. Feeling a little cooler than last night, especially in the clearer spells. Minimum temperature 10 °C.

Thursday:

A morning of sunny spells and a scattering of showers, although showers tending to ease towards lunchtime. Many areas becoming dry throughout the afternoon, with temperatures nearer average. Maximum temperature 19 °C.

Outlook for Friday to Sunday:

Rain returns on Friday, potentially heavy for a time. A risk of some further rain on Saturday before turning drier and brighter on Sunday. Temperatures around average for early October.

The southern UK will likely be under the influence of high pressure for the first few days of this period. This means plenty of dry weather to be had here, albeit with some chilly nights and overnight and morning fog in places. In the north, a rather more changeable pattern will continue, with occasional rain and windy conditions at times. Broadly changeable weather patterns look to continue through mid-month, with ridges of high pressure extending from the southwest, interspersed by Atlantic frontal systems. These could be associated with quite deep and fast-moving depressions, bringing the potential for windy weather more widely, again most likely in the north. Temperatures probably near or slightly above normal overall, with day to day variations.

The second half of October will probably maintain a changeable pattern overall with showers or longer spells of rain often moving in from the Atlantic. This means the wettest and at times windiest weather is more likely in the west and northwest, and relatively drier conditions more likely towards the south and east. With a westerly type considered most likely, this would support temperatures remaining close to or a little above average overall. However, there is a chance that more slowly evolving weather patterns develop, which could either lead to longer drier spells more widely or rainfall accumulating in climatologically drier areas.