Castlebay (Na h-Eileanan Siar) weather

Headline:

Rain in the west, drier in the east today. Windy.

Today:

Cloudy across the west with outbreaks of rain, mainly over the Northwest Highlands. Dry in the east with some sunny intervals. Windy with strong to gale southwesterly winds, easing down later. Maximum temperature 16 °C.

Tonight:

Mainly dry this evening. Cloud and some light and patchy rain will spread northeast for a time overnight. Freshening southwesterly winds in the northwest later in the night. Minimum temperature 10 °C.

Friday:

It will be a dry day with some good spells of sunshine. Rain is likely to spread to the Western Isles and far northwest mainland through the evening. Maximum temperature 17 °C.

Outlook for Saturday to Monday:

Chance of rain in the east Saturday, otherwise mostly dry with freshening northerly winds in the west. Cold and windy with showers on Sunday. Less windy with fewer showers Monday.

Into next week, a northwest-southeast split is most likely. The best of drier spells will be in the north and northwest where some fog and frost patches are possible, but there will be spells or rain or showers in south and eastern areas, near to an area of low pressure. It will also turn colder, as a northerly flow becomes established for a time. Later in the week, more widely drier and settled conditions could develop as high pressure becomes more influential, although probably still with some coastal showers. Temperatures should gradually return closer to average in this period. Later in the period there may be a return to a more changeable pattern but this is uncertain.

By the beginning of October, confidence is very low in the weather regimes most likely to affect the UK. On balance, there will likely be a transition from slow-moving weather patterns to a more changeable period at some stage although the timing on this is highly uncertain. High pressure probably close to the UK, which would offer some occasional periods of dry weather, will likely give way to a more unsettled period with some short lived dry interludes during this time. Temperatures will likely fluctuate either side of, but often close to, average.