Glasfynydd (Usk Reservoir) (Carmarthenshire) weather

Headline:

Warm with sunny spells, especially in the southeast.

Today:

Early mist and fog soon lifting, leaving a widely dry and fine day. Plenty of warm sunshine, with temperatures higher than on Saturday. Breezy and slightly cloudier though in the far north and west, with an isolated spot of drizzle. Maximum temperature 18 °C.

Tonight:

Some cloud lingering in the far west and northwest overnight, but dry with clear spells developing further south and east. Remaining frost-free with patchy fog forming by dawn. Minimum temperature 7 °C.

Monday:

A warm and sunny day with any early morning low cloud or fog quick to clear. Plenty of clear, blue skies by the afternoon, and feeling warm in the sunshine. Maximum temperature 20 °C.

Outlook for Tuesday to Thursday:

Increasingly warm through the week as high pressure continues to build across the country. Plenty of clear, sunny spells by day with temperatures well above average.

Following a widely fine and very warm spell through the week, temperatures are most likely to return back closer to average from the north during Thursday and Friday. Whilst a little rain is possible during this transition, most areas remaining largely dry. Largley fine but cooler conditions are then most likely over the weekend. However, likely cloudier and breezier at times across some northern areas with a chance of rain. Into the following week, conditions will probably turn more changeable overall, with dry, settled periods interspersed with some spells of wetter weather. This will bring some showers or longer spells of rain at times, which could be heavy and thundery in places. Temperatures will likely be around average.

Fairly typical spring weather is expected during this part of May. Periods of fine and dry weather are likely to be interspersed with spells of wetter, more unsettled weather, with a risk of heavy rain and thunderstorms in places. Temperatures will most likely be near or slightly above average overall.