Sound of Barra (Na h-Eileanan Siar) weather

Headline:

Patchy rain and showers. Persistent rain north later. Becoming windy.

Today:

The morning will begin cloudy but mostly dry. Patchy light rain and showers will soon spread south with persistent rain following in the north towards the evening. The northwest wind will strengthen from the afternoon. Maximum temperature 5 °C.

Tonight:

Windy with northwest winds increasing to gale over the coasts and hills. Early persistent rain and hill snow clears to frequent snow showers, these heavy and perhaps thundery at times. Minimum temperature -4 °C.

Thursday:

Gale northwesterly winds continue. The day will feel colder than Wednesday with further frequent and heavy snow showers. Maximum temperature 3 °C.

Outlook for Friday to Sunday:

Very cold conditions with further snow showers continue, these heavy at times. Friday will be windy with the wind easing slowly through Saturday and Sunday.

Cold northerly winds dominant across the UK in the first week of January. These will bring wintry showers (often of snow) to many coastlines (and areas just inland of these) that are exposed to onshore winds. Day-to-day changes in wind direction will change the places most exposed to the showers, but many inland locations across central and southern areas will remain mostly dry but cold - some more coherent bands of rain, sleet and snow working south at times. Into the second week of January slightly milder conditions will attempt to move in from the west, with a risk of further snow on the leading edge of these turning to rain. Colder regime more likely to the north with average to just below average in the south.

Whilst confidence in details is low, by the start of this period the transition back to westerly winds bringing Atlantic weather systems into the UK is expected to be complete, with temperatures most likely recovering to around or just below average. There is perhaps a weak signal for slowly evolving weather patterns to be more favoured than normal, such patterns increase the chances of frost and fog above normal by night.